Re: Sample CCNA test question..bogus?
I confer. This subnet would be 172.16.0.0 - 172.16.31.255. Kelly D Griffin, CCNA, CCDA Network Engineer Kg2 Network Design http://www.kg2.com - Original Message - From: "Bruce" <[EMAIL PROTECTED]> Newsgroups: groupstudy.cisco To: <[EMAIL PROTECTED]> Sent: Wednesday, March 14, 2001 10:11 PM Subject: Sample CCNA test question..bogus? > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0 > > b. 172.16.64.0 > > c. 172.16.63.255 > > d. 172.16.80.255 > > > > Which one and why? > > (I say none of them. Am I going mad?) > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > http://1cis.com > Free E-mail Servers with unlimited mailboxes > 1st Class Internet Solutions http://1cis.com Free E-mail Servers with unlimited mailboxes 1st Class Internet Solutions _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
Well, since I'm not a qualified psychiatrist I don't want to comment on your mental health, but there is a correct answer here. If we go to binary it all becomes clear. The /19 means that the first 19 bits are network/subnetwork bits and the remaining 13 bits are host bits. Therefore our mask would look like this: ..1110. Since the first two octects are identical, we can dispense with them and concentrate on the first 3 bits of the third octet and the remaining host bits. Our subnet addresses would be as follows: X.X.. = X.X.0.0 Hosts = X.X.0.1 - X.X.31.254 Bdcst = X.X.31.255* *Assumes Subnet Zero Allowed X.X.0010. = X.X.32.0 Hosts = X.X.32.1 - X.X.63.254 Bdcst = X.X.63.255 X.X.0100. = X.X.64.0 Hosts = X.X.64.1 - X.X.95.254 Bdcst = X.X.95.255 X.X.0110. = X.X.96.0 Etcetera, Etcetera . . Etcetera (You get the picture) >From this you can see that: answer A is the "wire" address of the 32 subnet answer B is the "wire" address of the 64 subnet answer C is the Broadcast address of the 32 subnet answer D falls within the valid host range for the 64 subnet and is correct. BTW, a good source for learning IP Addressing & subnetting is: www.learntosubnet.com HTH, Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco Regional Networking Academy Bruce wrote: > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0 > > b. 172.16.64.0 > > c. 172.16.63.255 > > d. 172.16.80.255 > > Which one and why? > > (I say none of them. Am I going mad?) > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
Tom, Thanks for your response but I beg to differ. I agree that answer D falls inside the range of the 64 subnet as you explain, but this is not the question. The question asks for a valid host using 172.16.0.0/19, not 172.16.64.0/19 By my reckoning, the valid host range is 172.16.0.1 to 172.16.31.254 Regards, BR. "Tom Lisa" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Well, since I'm not a qualified psychiatrist I don't want to comment on your mental > health, but there is a correct answer here. If we go to binary it all becomes clear. > > The /19 means that the first 19 bits are network/subnetwork bits and the remaining 13 > bits are host bits. Therefore our mask would look like this: > ..1110. > > Since the first two octects are identical, we can dispense with them and concentrate on > the first 3 bits of the third octet and the remaining host bits. > > Our subnet addresses would be as follows: > > X.X.. = X.X.0.0 Hosts = X.X.0.1 - X.X.31.254 Bdcst = X.X.31.255* > *Assumes Subnet Zero Allowed > X.X.0010. = X.X.32.0 Hosts = X.X.32.1 - X.X.63.254 Bdcst = X.X.63.255 > X.X.0100. = X.X.64.0 Hosts = X.X.64.1 - X.X.95.254 Bdcst = X.X.95.255 > X.X.0110. = X.X.96.0 Etcetera, Etcetera > . > . > Etcetera (You get the picture) > > From this you can see that: > answer A is the "wire" address of the 32 subnet > answer B is the "wire" address of the 64 subnet > answer C is the Broadcast address of the 32 subnet > answer D falls within the valid host range for the 64 subnet and is correct. > > BTW, a good source for learning IP Addressing & subnetting is: www.learntosubnet.com > > HTH, > Prof. Tom Lisa, CCAI > Community College of Southern Nevada > Cisco Regional Networking Academy > > > Bruce wrote: > > > Q. Which one of the following is a valid host using the address of > > 172.16.0.0 /19? > > > > a. 172.16.32.0 > > > > b. 172.16.64.0 > > > > c. 172.16.63.255 > > > > d. 172.16.80.255 > > > > Which one and why? > > > > (I say none of them. Am I going mad?) > > > > _ > > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Sample CCNA test question..bogus?
See Below > -Original Message- > From: Bruce [SMTP:[EMAIL PROTECTED]] > Sent: Thursday, March 15, 2001 12:11 PM > To: [EMAIL PROTECTED] > Subject: Sample CCNA test question..bogus? > > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0Network Address > > b. 172.16.64.0Network Address > > c. 172.16.63.255 broadcast Address > > d. 172.16.80.255 Ok > > > > Which one and why? > > (I say none of them. Am I going mad?) > > > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
It would appear to me that by the statement 172.16.0.0/19 they are stating a major net rather than one of the subnets created by the masking. If you look carefully at the answers, D is the only one that can be right because it is the only one that qualifies as a host address. A) 172.16.32.0 = a subnet address, B) 172.16.64.0 = a subnet address, C) 172.16.63.255 = a broadcast address within a subnet, D) 172.16.80.255 = a host address within a subnet. If I am wrong, it wouldn't be the first time. but that's what I see. Adam Hickey [EMAIL PROTECTED] - Original Message - From: "Bruce" <[EMAIL PROTECTED]> Newsgroups: groupstudy.cisco To: <[EMAIL PROTECTED]> Sent: Wednesday, March 14, 2001 9:38 PM Subject: Re: Sample CCNA test question..bogus? > Tom, Thanks for your response but I beg to differ. I agree that answer D > falls inside the range of the 64 subnet as you explain, but this is not the > question. The question asks for a valid host using 172.16.0.0/19, not > 172.16.64.0/19 > By my reckoning, the valid host range is 172.16.0.1 to 172.16.31.254 > > Regards, > BR. > > "Tom Lisa" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Well, since I'm not a qualified psychiatrist I don't want to comment on > your mental > > health, but there is a correct answer here. If we go to binary it all > becomes clear. > > > > The /19 means that the first 19 bits are network/subnetwork bits and the > remaining 13 > > bits are host bits. Therefore our mask would look like this: > > ..1110. > > > > Since the first two octects are identical, we can dispense with them and > concentrate on > > the first 3 bits of the third octet and the remaining host bits. > > > > Our subnet addresses would be as follows: > > > > X.X.. = X.X.0.0 Hosts = X.X.0.1 - X.X.31.254 Bdcst = > X.X.31.255* > > *Assumes Subnet Zero Allowed > > X.X.0010. = X.X.32.0 Hosts = X.X.32.1 - X.X.63.254 Bdcst = > X.X.63.255 > > X.X.0100. = X.X.64.0 Hosts = X.X.64.1 - X.X.95.254 Bdcst = > X.X.95.255 > > X.X.0110. = X.X.96.0 Etcetera, Etcetera > > . > > . > > Etcetera (You get the picture) > > > > From this you can see that: > > answer A is the "wire" address of the 32 subnet > > answer B is the "wire" address of the 64 subnet > > answer C is the Broadcast address of the 32 subnet > > answer D falls within the valid host range for the 64 subnet and is > correct. > > > > BTW, a good source for learning IP Addressing & subnetting is: > www.learntosubnet.com > > > > HTH, > > Prof. Tom Lisa, CCAI > > Community College of Southern Nevada > > Cisco Regional Networking Academy > > > > > > Bruce wrote: > > > > > Q. Which one of the following is a valid host using the address of > > > 172.16.0.0 /19? > > > > > > a. 172.16.32.0 > > > > > > b. 172.16.64.0 > > > > > > c. 172.16.63.255 > > > > > > d. 172.16.80.255 > > > > > > Which one and why? > > > > > > (I say none of them. Am I going mad?) > > > > > > _ > > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
copy this dos program to your hard drive and run it. handy dandy ip = subnet calculator. >>> Tom Lisa <[EMAIL PROTECTED]> 03/15/01 12:18AM >>> Well, since I'm not a qualified psychiatrist I don't want to comment on = your mental health, but there is a correct answer here. If we go to binary it all = becomes clear. The /19 means that the first 19 bits are network/subnetwork bits and the = remaining 13 bits are host bits. Therefore our mask would look like this: ..1110. Since the first two octects are identical, we can dispense with them and = concentrate on the first 3 bits of the third octet and the remaining host bits. Our subnet addresses would be as follows: X.X.. =3D X.X.0.0 Hosts =3D X.X.0.1 - X.X.31.254 Bdcst =3D = X.X.31.255* *Assumes Subnet Zero Allowed X.X.0010. =3D X.X.32.0 Hosts =3D X.X.32.1 - X.X.63.254 Bdcst = =3D X.X.63.255 X.X.0100. =3D X.X.64.0 Hosts =3D X.X.64.1 - X.X.95.254 Bdcst = =3D X.X.95.255 X.X.0110. =3D X.X.96.0 Etcetera, Etcetera . . Etcetera (You get the picture) >From this you can see that: answer A is the "wire" address of the 32 subnet answer B is the "wire" address of the 64 subnet answer C is the Broadcast address of the 32 subnet answer D falls within the valid host range for the 64 subnet and is = correct. BTW, a good source for learning IP Addressing & subnetting is: www.learntos= ubnet.com=20 HTH, Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco Regional Networking Academy Bruce wrote: > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0 > > b. 172.16.64.0 > > c. 172.16.63.255 > > d. 172.16.80.255 > > Which one and why? > > (I say none of them. Am I going mad?) > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list= /cisco.html=20 > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]=20= _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/c= isco.html=20 Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Sample CCNA test question..bogus?
Just to elaborate on Adam's answer If you are using CIDR (allows 0 and 255 as networks) you have a total of 8 networks (2^3) This leaves you with 8190 hosts per network (2^13 - 2) The network ranges (256 - 224 = 32 ) (you get the 224 by counting the 1's in this case 1110) The hosts range between the network addresses (this accounts for the subnet address and broadcast address) 172.31.0.0 - 172.31.31.255 172.31.32.0 - 172.31.63.255 172.31.64.0 - 172.31.95.255 172.31.96.0 - 172.31.127.255 172.31.128.0 - 172.31.159.255 172.31.160.0 - 172.31.191.255 172.31.192.0 - 172.31.223.255 172.31.224.0 - 172.31.255.255 So the answer is D Hope this helps Dusty Harper [EMAIL PROTECTED] MCSE + I + DBA CCNA, CCDA A+, Network+, i-Net+ -Original Message- From: Adam Hickey [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 14, 2001 5:57 PM To: Bruce; [EMAIL PROTECTED] Subject: Re: Sample CCNA test question..bogus? It would appear to me that by the statement 172.16.0.0/19 they are stating a major net rather than one of the subnets created by the masking. If you look carefully at the answers, D is the only one that can be right because it is the only one that qualifies as a host address. A) 172.16.32.0 = a subnet address, B) 172.16.64.0 = a subnet address, C) 172.16.63.255 = a broadcast address within a subnet, D) 172.16.80.255 = a host address within a subnet. If I am wrong, it wouldn't be the first time. but that's what I see. Adam Hickey [EMAIL PROTECTED] - Original Message - From: "Bruce" <[EMAIL PROTECTED]> Newsgroups: groupstudy.cisco To: <[EMAIL PROTECTED]> Sent: Wednesday, March 14, 2001 9:38 PM Subject: Re: Sample CCNA test question..bogus? > Tom, Thanks for your response but I beg to differ. I agree that answer D > falls inside the range of the 64 subnet as you explain, but this is not the > question. The question asks for a valid host using 172.16.0.0/19, not > 172.16.64.0/19 > By my reckoning, the valid host range is 172.16.0.1 to 172.16.31.254 > > Regards, > BR. > > "Tom Lisa" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Well, since I'm not a qualified psychiatrist I don't want to comment on > your mental > > health, but there is a correct answer here. If we go to binary it all > becomes clear. > > > > The /19 means that the first 19 bits are network/subnetwork bits and the > remaining 13 > > bits are host bits. Therefore our mask would look like this: > > ..1110. > > > > Since the first two octects are identical, we can dispense with them and > concentrate on > > the first 3 bits of the third octet and the remaining host bits. > > > > Our subnet addresses would be as follows: > > > > X.X.. = X.X.0.0 Hosts = X.X.0.1 - X.X.31.254 Bdcst = > X.X.31.255* > > *Assumes Subnet Zero Allowed > > X.X.0010. = X.X.32.0 Hosts = X.X.32.1 - X.X.63.254 Bdcst = > X.X.63.255 > > X.X.0100. = X.X.64.0 Hosts = X.X.64.1 - X.X.95.254 Bdcst = > X.X.95.255 > > X.X.0110. = X.X.96.0 Etcetera, Etcetera > > . > > . > > Etcetera (You get the picture) > > > > From this you can see that: > > answer A is the "wire" address of the 32 subnet > > answer B is the "wire" address of the 64 subnet > > answer C is the Broadcast address of the 32 subnet > > answer D falls within the valid host range for the 64 subnet and is > correct. > > > > BTW, a good source for learning IP Addressing & subnetting is: > www.learntosubnet.com > > > > HTH, > > Prof. Tom Lisa, CCAI > > Community College of Southern Nevada > > Cisco Regional Networking Academy > > > > > > Bruce wrote: > > > > > Q. Which one of the following is a valid host using the address of > > > 172.16.0.0 /19? > > > > > > a. 172.16.32.0 > > > > > > b. 172.16.64.0 > > > > > > c. 172.16.63.255 > > > > > > d. 172.16.80.255 > > > > > > Which one and why? > > > > > > (I say none of them. Am I going mad?) > > > > > > _ > > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > > FAQ, list archives, and subscription i
Re: Sample CCNA test question..bogus?
d. 172.16.80.255 This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - 172.16.95.254. Arthur >From: "Bruce" <[EMAIL PROTECTED]> >Reply-To: "Bruce" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 15:11:07 +1100 > >Q. Which one of the following is a valid host using the address of >172.16.0.0 /19? > >a. 172.16.32.0 > >b. 172.16.64.0 > >c. 172.16.63.255 > >d. 172.16.80.255 > > > >Which one and why? > >(I say none of them. Am I going mad?) > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Sample CCNA test question..bogus?
The question is just worded badly. It seems that the writer meant to ask: 1. If you were given the whole 172.16.0.0 network to use and you chose a /19 subnet mask to subnet it with, which of the folowing answers would be a valid host in ONE of the resulting subnets. versus 2. Which one of the following is a valid host using the address of 172.16.0.0 /19? Those are two different questions with distinct answers. Answer D is feasible for question 1, but not for question 2. a. 172.16.32.0 b. 172.16.64.0 c. 172.16.63.255 d. 172.16.80.255 -Jarrett _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
If the question were: Q. Which one of the following is a valid host using the address of 172.16.64.0 /19? Answer D would be valid. Q. Which of the following is a valid host using the address of 172.16.0.0/24? a. 172.16.254.12 b. 172.16.0.255 c. 172.16.0.0 d. 172.16.255.255 What is the answer to this question? When I do design work and send clients a design that includes the subnets they should route to my campus, I do not say 172.16.0.0/19 and mean 172.16.64.0/19. Kelly D Griffin, CCNA, CCDA Network Engineer Kg2 Network Design http://www.kg2.com - Original Message - From: "Arthur Simplina" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, March 15, 2001 9:46 AM Subject: Re: Sample CCNA test question..bogus? > d. 172.16.80.255 > > This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - > 172.16.95.254. > > Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > http://1cis.com > Free E-mail Servers with unlimited mailboxes > 1st Class Internet Solutions http://1cis.com Free E-mail Servers with unlimited mailboxes 1st Class Internet Solutions _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
I think I'll side with those who say there is no correct answer, but there is an answer that's closer to being correct than the others. :-) The question is asking for a valid host in the 172.16.0.0/19 range. Answer D is not in that range! It is in the 172.16.64.0/19 network. Valid host addresses in the 172.16.0.0/19 range are: 172.16.0.1 through 172.16.31.254 I would agree that by making a subtle adjustment to the question, answer D is the only answer possible. Given a /19 prefix length, the only possible host address given in the answers is D, which forces us to change the question to fit the answer. This just appears to be a poorly worded question that not only allows you to figure out the most-correct answer eventually but also forces you to deduce what the actual question is in the first place.In other words, it's a typical Cisco test question! Regards, John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> d. 172.16.80.255 This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - 172.16.95.254. Arthur >From: "Bruce" <[EMAIL PROTECTED]> >Reply-To: "Bruce" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 15:11:07 +1100 > >Q. Which one of the following is a valid host using the address of >172.16.0.0 /19? > >a. 172.16.32.0 > >b. 172.16.64.0 > >c. 172.16.63.255 > >d. 172.16.80.255 > > > >Which one and why? > >(I say none of them. Am I going mad?) > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
I believe that answer D is correct and here is why Vaslid hosts in the network 172.16.0.0/19 are as follows 172.16.64.1-172.16.95.254 172.16.128.1-172.16.159.254 172.16.192.1-172.16.223.254 172.16.32.1-172.16.63.265 172.16.160.1-172.16.191.254 172.16.96.1-172.16.127.254 .255 is broadcast >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 11:19AM >>> I think I'll side with those who say there is no correct answer, but there is an answer that's closer to being correct than the others. :-) The question is asking for a valid host in the 172.16.0.0/19 range. Answer D is not in that range! It is in the 172.16.64.0/19 network. Valid host addresses in the 172.16.0.0/19 range are: 172.16.0.1 through 172.16.31.254 I would agree that by making a subtle adjustment to the question, answer D is the only answer possible. Given a /19 prefix length, the only possible host address given in the answers is D, which forces us to change the question to fit the answer. This just appears to be a poorly worded question that not only allows you to figure out the most-correct answer eventually but also forces you to deduce what the actual question is in the first place.In other words, it's a typical Cisco test question! Regards, John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> d. 172.16.80.255 This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - 172.16.95.254. Arthur >From: "Bruce" <[EMAIL PROTECTED]> >Reply-To: "Bruce" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 15:11:07 +1100 > >Q. Which one of the following is a valid host using the address of >172.16.0.0 /19? > >a. 172.16.32.0 > >b. 172.16.64.0 > >c. 172.16.63.255 > >d. 172.16.80.255 > > > >Which one and why? > >(I say none of them. Am I going mad?) > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
I disagree. Valid hosts in 172.16.0.0/19 are: 172.16.0.1 through 172.16.31.255 I guarantee you that any other interpretation will make life miserable for you eventually, especially in a production environment where you actually use CIDR or VLSM. A good example would be if you were running BGP in a production environment that actually connected to the internet. Let's say you were Joe's ISP and were assigned 172.16.0.0/19. This is *very* specific...you can only advertise 172.16.0.1 through 172.16.31.254. Most likely, 172.16.32.1 through 172.16.63.254 is going to be assigned to someone else. If you followed your logic and advertise the entire 172.16.0.0/16, you will be getting some nasty phone calls or nastygrams in your email box. Companies tend to get a little upset with you if you start advertising their address block. In that spirit, I assume when a test question says something as specific as 172.16.0.0/19 that they *really* mean it. John >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 9:54:56 AM >>> I believe that answer D is correct and here is why Vaslid hosts in the network 172.16.0.0/19 are as follows 172.16.64.1-172.16.95.254 172.16.128.1-172.16.159.254 172.16.192.1-172.16.223.254 172.16.32.1-172.16.63.265 172.16.160.1-172.16.191.254 172.16.96.1-172.16.127.254 .255 is broadcast >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 11:19AM >>> I think I'll side with those who say there is no correct answer, but there is an answer that's closer to being correct than the others. :-) The question is asking for a valid host in the 172.16.0.0/19 range. Answer D is not in that range! It is in the 172.16.64.0/19 network. Valid host addresses in the 172.16.0.0/19 range are: 172.16.0.1 through 172.16.31.254 I would agree that by making a subtle adjustment to the question, answer D is the only answer possible. Given a /19 prefix length, the only possible host address given in the answers is D, which forces us to change the question to fit the answer. This just appears to be a poorly worded question that not only allows you to figure out the most-correct answer eventually but also forces you to deduce what the actual question is in the first place.In other words, it's a typical Cisco test question! Regards, John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> d. 172.16.80.255 This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - 172.16.95.254. Arthur >From: "Bruce" <[EMAIL PROTECTED]> >Reply-To: "Bruce" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 15:11:07 +1100 > >Q. Which one of the following is a valid host using the address of >172.16.0.0 /19? > >a. 172.16.32.0 > >b. 172.16.64.0 > >c. 172.16.63.255 > >d. 172.16.80.255 > > > >Which one and why? > >(I say none of them. Am I going mad?) > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
How could the wording be correct? 172.16.80.255 is a host address in 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer provided to that specific question as worded. I agree that it is trying to be a trick question, but it fails because of poor wording or a typo. Perhaps one of the answers should have been 172.16.15.255 or something like that. That would have been tricky yet also correct given the question that was being asked. John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> I think the trick part of question here is that the answer d. 172.16.80.255 seems like a broadcast address because of the 255 (all 1's in the last octec.) So now the test taker faces the dilemna of choosing between two subnetwork addressess and two "broadcast" addresses. Cisco would want to know if you really know subnetting. Hence, the wording of the question (which to my opinion is still correct). Arthur >From: "John Neiberger" <[EMAIL PROTECTED]> >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 09:19:53 -0700 > >I think I'll side with those who say there is no correct answer, but >there is an answer that's closer to being correct than the others. :-) > >The question is asking for a valid host in the 172.16.0.0/19 range. >Answer D is not in that range! It is in the 172.16.64.0/19 network. >Valid host addresses in the 172.16.0.0/19 range are: > >172.16.0.1 through 172.16.31.254 > >I would agree that by making a subtle adjustment to the question, >answer D is the only answer possible. Given a /19 prefix length, the >only possible host address given in the answers is D, which forces us to >change the question to fit the answer. > >This just appears to be a poorly worded question that not only allows >you to figure out the most-correct answer eventually but also forces you >to deduce what the actual question is in the first place.In other >words, it's a typical Cisco test question! > >Regards, >John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> >d. 172.16.80.255 > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - >172.16.95.254. > >Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > >_ >Get your FREE download of MSN Explorer at http://explorer.msn.com > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
John's right on track here. When using the /19 notation with 172.16.0.0, you're referring to that specific network. 172.16.0.0/19 is not the same network as 172.16.64.0/19. Reading this question a little bit differently, I can see that perhaps there is a typo...if the question used a /18 instead of a /19, then answer "A" would be correct. If you want to make answer "D" correct, you either need to rephrase the question to "Which one is a valid host using 172.16.64.0/19?" or rephrase the question to "Which one is a valid host using 172.16.0.0/17?", which would allow for ALL of the answers to be correct. Craig At 10:13 AM 3/15/2001 -0700, you wrote: >I disagree. Valid hosts in 172.16.0.0/19 are: > >172.16.0.1 through 172.16.31.255 > >I guarantee you that any other interpretation will make life miserable >for you eventually, especially in a production environment where you >actually use CIDR or VLSM. A good example would be if you were running >BGP in a production environment that actually connected to the internet. > > >Let's say you were Joe's ISP and were assigned 172.16.0.0/19. This is >*very* specific...you can only advertise 172.16.0.1 through >172.16.31.254. Most likely, 172.16.32.1 through 172.16.63.254 is going >to be assigned to someone else. If you followed your logic and >advertise the entire 172.16.0.0/16, you will be getting some nasty phone >calls or nastygrams in your email box. Companies tend to get a little >upset with you if you start advertising their address block. > >In that spirit, I assume when a test question says something as >specific as 172.16.0.0/19 that they *really* mean it. > >John > > >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 9:54:56 AM >>> >I believe that answer D is correct and here is why > >Vaslid hosts in the network 172.16.0.0/19 are as follows > >172.16.64.1-172.16.95.254 >172.16.128.1-172.16.159.254 >172.16.192.1-172.16.223.254 >172.16.32.1-172.16.63.265 >172.16.160.1-172.16.191.254 >172.16.96.1-172.16.127.254 >.255 is broadcast > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 11:19AM > >>> >I think I'll side with those who say there is no correct answer, but >there is an answer that's closer to being correct than the others. >:-) > >The question is asking for a valid host in the 172.16.0.0/19 range. >Answer D is not in that range! It is in the 172.16.64.0/19 network. >Valid host addresses in the 172.16.0.0/19 range are: > >172.16.0.1 through 172.16.31.254 > >I would agree that by making a subtle adjustment to the question, >answer D is the only answer possible. Given a /19 prefix length, the >only possible host address given in the answers is D, which forces us >to >change the question to fit the answer. > >This just appears to be a poorly worded question that not only allows >you to figure out the most-correct answer eventually but also forces >you >to deduce what the actual question is in the first place.In >other >words, it's a typical Cisco test question! > >Regards, >John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> >d. 172.16.80.255 > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - >172.16.95.254. > >Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > >_ >Get your FREE download of MSN Explorer at http://explorer.msn.com > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
this is assuming vlsm. when you have a class network with varibale bits in the subnet mask that is different than the default subnet mask, you have multiple subnets and multiple host on each subnet. This question is telling us that there are 3 bits as subnet bits (since the default for class B networks is 16) and the remaining 13 are host bits. This arnagement (172.16.0.0/19) calculates out to be more than one subnet and answer d falls in one of the valid subnet ranges. If thew question was worded differently with a particular subnet such as 172.16.30.x/19, then it would not be true. >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM >>> How could the wording be correct? 172.16.80.255 is a host address in 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer provided to that specific question as worded. I agree that it is trying to be a trick question, but it fails because of poor wording or a typo. Perhaps one of the answers should have been 172.16.15.255 or something like that. That would have been tricky yet also correct given the question that was being asked. John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> I think the trick part of question here is that the answer d. 172.16.80.255 seems like a broadcast address because of the 255 (all 1's in the last octec.) So now the test taker faces the dilemna of choosing between two subnetwork addressess and two "broadcast" addresses. Cisco would want to know if you really know subnetting. Hence, the wording of the question (which to my opinion is still correct). Arthur >From: "John Neiberger" <[EMAIL PROTECTED]> >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 09:19:53 -0700 > >I think I'll side with those who say there is no correct answer, but >there is an answer that's closer to being correct than the others. :-) > >The question is asking for a valid host in the 172.16.0.0/19 range. >Answer D is not in that range! It is in the 172.16.64.0/19 network. >Valid host addresses in the 172.16.0.0/19 range are: > >172.16.0.1 through 172.16.31.254 > >I would agree that by making a subtle adjustment to the question, >answer D is the only answer possible. Given a /19 prefix length, the >only possible host address given in the answers is D, which forces us to >change the question to fit the answer. > >This just appears to be a poorly worded question that not only allows >you to figure out the most-correct answer eventually but also forces you >to deduce what the actual question is in the first place.In other >words, it's a typical Cisco test question! > >Regards, >John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> >d. 172.16.80.255 > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - >172.16.95.254. > >Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > >_ >Get your FREE download of MSN Explorer at http://explorer.msn.com > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Sample CCNA test question..bogus?
I believe the "best" answer, this is always the kicker, is D. We all know we are searching for the best answer, or the one the test designer thinks is correct. It is the only one that is not a broadcast or network address using the /19 mask. It is a poorly worded question, but we are faced with those on any test. -Original Message- From: Craig Columbus [mailto:[EMAIL PROTECTED]] Sent: Thursday, March 15, 2001 11:00 AM To: John Neiberger Cc: [EMAIL PROTECTED] Subject: Re: Sample CCNA test question..bogus? John's right on track here. When using the /19 notation with 172.16.0.0, you're referring to that specific network. 172.16.0.0/19 is not the same network as 172.16.64.0/19. Reading this question a little bit differently, I can see that perhaps there is a typo...if the question used a /18 instead of a /19, then answer "A" would be correct. If you want to make answer "D" correct, you either need to rephrase the question to "Which one is a valid host using 172.16.64.0/19?" or rephrase the question to "Which one is a valid host using 172.16.0.0/17?", which would allow for ALL of the answers to be correct. Craig At 10:13 AM 3/15/2001 -0700, you wrote: >I disagree. Valid hosts in 172.16.0.0/19 are: > >172.16.0.1 through 172.16.31.255 > >I guarantee you that any other interpretation will make life miserable >for you eventually, especially in a production environment where you >actually use CIDR or VLSM. A good example would be if you were running >BGP in a production environment that actually connected to the internet. > > >Let's say you were Joe's ISP and were assigned 172.16.0.0/19. This is >*very* specific...you can only advertise 172.16.0.1 through >172.16.31.254. Most likely, 172.16.32.1 through 172.16.63.254 is going >to be assigned to someone else. If you followed your logic and >advertise the entire 172.16.0.0/16, you will be getting some nasty phone >calls or nastygrams in your email box. Companies tend to get a little >upset with you if you start advertising their address block. > >In that spirit, I assume when a test question says something as >specific as 172.16.0.0/19 that they *really* mean it. > >John > > >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 9:54:56 AM >>> >I believe that answer D is correct and here is why > >Vaslid hosts in the network 172.16.0.0/19 are as follows > >172.16.64.1-172.16.95.254 >172.16.128.1-172.16.159.254 >172.16.192.1-172.16.223.254 >172.16.32.1-172.16.63.265 >172.16.160.1-172.16.191.254 >172.16.96.1-172.16.127.254 >.255 is broadcast > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 11:19AM > >>> >I think I'll side with those who say there is no correct answer, but >there is an answer that's closer to being correct than the others. >:-) > >The question is asking for a valid host in the 172.16.0.0/19 range. >Answer D is not in that range! It is in the 172.16.64.0/19 network. >Valid host addresses in the 172.16.0.0/19 range are: > >172.16.0.1 through 172.16.31.254 > >I would agree that by making a subtle adjustment to the question, >answer D is the only answer possible. Given a /19 prefix length, the >only possible host address given in the answers is D, which forces us >to >change the question to fit the answer. > >This just appears to be a poorly worded question that not only allows >you to figure out the most-correct answer eventually but also forces >you >to deduce what the actual question is in the first place.In >other >words, it's a typical Cisco test question! > >Regards, >John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> >d. 172.16.80.255 > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - >172.16.95.254. > >Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >
Re: Sample CCNA test question..bogus?
Amen! Thank You Adam Hickey Cable & Wireless Network Engineer, IOPS [EMAIL PROTECTED] ___ "And One!" - Original Message - From: "Lowell Sharrah" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Thursday, March 15, 2001 10:10 AM Subject: Re: Sample CCNA test question..bogus? > this is assuming vlsm. when you have a class network with varibale bits in the subnet mask that is different than the default subnet mask, you have multiple subnets and multiple host on each subnet. This question is telling us that there are 3 bits as subnet bits (since the default for class B networks is 16) and the remaining 13 are host bits. This arnagement (172.16.0.0/19) calculates out to be more than one subnet and answer d falls in one of the valid subnet ranges. If thew question was worded differently with a particular subnet such as 172.16.30.x/19, then it would not be true. > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM >>> > How could the wording be correct? 172.16.80.255 is a host address in > 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer > provided to that specific question as worded. I agree that it is trying > to be a trick question, but it fails because of poor wording or a typo. > Perhaps one of the answers should have been 172.16.15.255 or something > like that. That would have been tricky yet also correct given the > question that was being asked. > > John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> > I think the trick part of question here is that the answer d. > 172.16.80.255 > seems like a broadcast address because of the 255 (all 1's in the last > > octec.) So now the test taker faces the dilemna of choosing between two > > subnetwork addressess and two "broadcast" addresses. > > Cisco would want to know if you really know subnetting. Hence, the > wording > of the question (which to my opinion is still correct). > > Arthur > > > >From: "John Neiberger" <[EMAIL PROTECTED]> > >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Re: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 09:19:53 -0700 > > > >I think I'll side with those who say there is no correct answer, but > >there is an answer that's closer to being correct than the others. > :-) > > > >The question is asking for a valid host in the 172.16.0.0/19 range. > >Answer D is not in that range! It is in the 172.16.64.0/19 network. > >Valid host addresses in the 172.16.0.0/19 range are: > > > >172.16.0.1 through 172.16.31.254 > > > >I would agree that by making a subtle adjustment to the question, > >answer D is the only answer possible. Given a /19 prefix length, the > >only possible host address given in the answers is D, which forces us > to > >change the question to fit the answer. > > > >This just appears to be a poorly worded question that not only allows > >you to figure out the most-correct answer eventually but also forces > you > >to deduce what the actual question is in the first place.In > other > >words, it's a typical Cisco test question! > > > >Regards, > >John > > > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM > >>> > >d. 172.16.80.255 > > > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - > >172.16.95.254. > > > >Arthur > > > > > > >From: "Bruce" <[EMAIL PROTECTED]> > > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > > >To: [EMAIL PROTECTED] > > >Subject: Sample CCNA test question..bogus? > > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > > > >Q. Which one of the following is a valid host using the address of > > >172.16.0.0 /19? > > > > > >a. 172.16.32.0 > > > > > >b. 172.16.64.0 > > > > > >c. 172.16.63.255 > > > > > >d. 172.16.80.255 > > > > > > > > > > > >Which one and why? > > > > > >(I say none of them. Am I going mad?) > > > > > > > > > > > >_ > > >FAQ, list archives, and subscription info: > > >http://www.groupstudy.com/list/cisco.html > > >Report misconduct and Nondisclosure violations to > [EMAIL PROTECTED] > > > > > >___
Re: Sample CCNA test question..bogus?
Bruce, I disagree that the question is asking for a valid host in the 0 subnet. It is only stating the network address and mask. Assuming classful addressing (as the CCNA exam does), from that you have to determine what would be the valid host ranges given that mask. Anyway, that is my interpretation of the question. BTW, where is this question from? Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco Regional Networking Academy Bruce wrote: > Tom, Thanks for your response but I beg to differ. I agree that answer D > falls inside the range of the 64 subnet as you explain, but this is not the > question. The question asks for a valid host using 172.16.0.0/19, not > 172.16.64.0/19 > By my reckoning, the valid host range is 172.16.0.1 to 172.16.31.254 > > Regards, > BR. > > "Tom Lisa" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Well, since I'm not a qualified psychiatrist I don't want to comment on > your mental > > health, but there is a correct answer here. If we go to binary it all > becomes clear. > > > > The /19 means that the first 19 bits are network/subnetwork bits and the > remaining 13 > > bits are host bits. Therefore our mask would look like this: > > ..1110. > > > > Since the first two octects are identical, we can dispense with them and > concentrate on > > the first 3 bits of the third octet and the remaining host bits. > > > > Our subnet addresses would be as follows: > > > > X.X.. = X.X.0.0 Hosts = X.X.0.1 - X.X.31.254 Bdcst = > X.X.31.255* > > *Assumes Subnet Zero Allowed > > X.X.0010. = X.X.32.0 Hosts = X.X.32.1 - X.X.63.254 Bdcst = > X.X.63.255 > > X.X.0100. = X.X.64.0 Hosts = X.X.64.1 - X.X.95.254 Bdcst = > X.X.95.255 > > X.X.0110. = X.X.96.0 Etcetera, Etcetera > > . > > . > > Etcetera (You get the picture) > > > > From this you can see that: > > answer A is the "wire" address of the 32 subnet > > answer B is the "wire" address of the 64 subnet > > answer C is the Broadcast address of the 32 subnet > > answer D falls within the valid host range for the 64 subnet and is > correct. > > > > BTW, a good source for learning IP Addressing & subnetting is: > www.learntosubnet.com > > > > HTH, > > Prof. Tom Lisa, CCAI > > Community College of Southern Nevada > > Cisco Regional Networking Academy > > > > > > Bruce wrote: > > > > > Q. Which one of the following is a valid host using the address of > > > 172.16.0.0 /19? > > > > > > a. 172.16.32.0 > > > > > > b. 172.16.64.0 > > > > > > c. 172.16.63.255 > > > > > > d. 172.16.80.255 > > > > > > Which one and why? > > > > > > (I say none of them. Am I going mad?) > > > > > > _ > > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
Okay, let's rephrase the question: You have variably subnetted 172.16.0.0/16 using a /19 mask. Someone working with you is configuring a server to be placed at a remote location that is on the 172.16.0.0/19 network, and he asks you for a valid host address. Would you tell him to use 172.16.80.255? I don't think so. You would make sure he uses an address from the 172.16.0.0/19 subnet, so it would have to be in the range 172.16.0.1 through 172.16.31.254. And for the very same reason, I feel that D is not a good answer as the original question is worded. John >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 11:10:10 AM >>> this is assuming vlsm. when you have a class network with varibale bits in the subnet mask that is different than the default subnet mask, you have multiple subnets and multiple host on each subnet. This question is telling us that there are 3 bits as subnet bits (since the default for class B networks is 16) and the remaining 13 are host bits. This arnagement (172.16.0.0/19) calculates out to be more than one subnet and answer d falls in one of the valid subnet ranges. If thew question was worded differently with a particular subnet such as 172.16.30.x/19, then it would not be true. >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM >>> How could the wording be correct? 172.16.80.255 is a host address in 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer provided to that specific question as worded. I agree that it is trying to be a trick question, but it fails because of poor wording or a typo. Perhaps one of the answers should have been 172.16.15.255 or something like that. That would have been tricky yet also correct given the question that was being asked. John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> I think the trick part of question here is that the answer d. 172.16.80.255 seems like a broadcast address because of the 255 (all 1's in the last octec.) So now the test taker faces the dilemna of choosing between two subnetwork addressess and two "broadcast" addresses. Cisco would want to know if you really know subnetting. Hence, the wording of the question (which to my opinion is still correct). Arthur >From: "John Neiberger" <[EMAIL PROTECTED]> >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 09:19:53 -0700 > >I think I'll side with those who say there is no correct answer, but >there is an answer that's closer to being correct than the others. :-) > >The question is asking for a valid host in the 172.16.0.0/19 range. >Answer D is not in that range! It is in the 172.16.64.0/19 network. >Valid host addresses in the 172.16.0.0/19 range are: > >172.16.0.1 through 172.16.31.254 > >I would agree that by making a subtle adjustment to the question, >answer D is the only answer possible. Given a /19 prefix length, the >only possible host address given in the answers is D, which forces us to >change the question to fit the answer. > >This just appears to be a poorly worded question that not only allows >you to figure out the most-correct answer eventually but also forces you >to deduce what the actual question is in the first place.In other >words, it's a typical Cisco test question! > >Regards, >John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> >d. 172.16.80.255 > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - >172.16.95.254. > >Arthur > > > >From: "Bruce" <[EMAIL PROTECTED]> > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > >Q. Which one of the following is a valid host using the address of > >172.16.0.0 /19? > > > >a. 172.16.32.0 > > > >b. 172.16.64.0 > > > >c. 172.16.63.255 > > > >d. 172.16.80.255 > > > > > > > >Which one and why? > > > >(I say none of them. Am I going mad?) > > > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > >_ >Get your FREE download of MSN Explorer at http://explorer.msn.com > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy
RE: Sample CCNA test question..bogus?
"D" is the only possible answer to give on a test, since it's pretty clear what the tester meant :) I guess the question could have been worded: "Given the Class B network 172.16.0.0, using a prefix length of 19, which of the following is a valid address? " Or much more simply and clearly: Q. Which one of the following is a valid host address? a. 172.16.32.0 /19 b. 172.16.64.0 /19 c. 172.16.63.255 /19 d. 172.16.80.255 /19 - Tks | <mailto:[EMAIL PROTECTED]> BV | <mailto:[EMAIL PROTECTED]> Sr. Technical Consultant, SBM, A Gates/Arrow Co. Vox 770-623-3430 11455 Lakefield Dr. Fax 770-623-3429 Duluth, GA 30097-1511 = -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Adam Hickey Sent: Thursday, March 15, 2001 1:40 PM To: Lowell Sharrah; [EMAIL PROTECTED]; [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Sample CCNA test question..bogus? Amen! Thank You Adam Hickey Cable & Wireless Network Engineer, IOPS [EMAIL PROTECTED] ___ "And One!" - Original Message - From: "Lowell Sharrah" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Thursday, March 15, 2001 10:10 AM Subject: Re: Sample CCNA test question..bogus? > this is assuming vlsm. when you have a class network with varibale bits in the subnet mask that is different than the default subnet mask, you have multiple subnets and multiple host on each subnet. This question is telling us that there are 3 bits as subnet bits (since the default for class B networks is 16) and the remaining 13 are host bits. This arnagement (172.16.0.0/19) calculates out to be more than one subnet and answer d falls in one of the valid subnet ranges. If thew question was worded differently with a particular subnet such as 172.16.30.x/19, then it would not be true. > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM >>> > How could the wording be correct? 172.16.80.255 is a host address in > 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer > provided to that specific question as worded. I agree that it is trying > to be a trick question, but it fails because of poor wording or a typo. > Perhaps one of the answers should have been 172.16.15.255 or something > like that. That would have been tricky yet also correct given the > question that was being asked. > > John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> > I think the trick part of question here is that the answer d. > 172.16.80.255 > seems like a broadcast address because of the 255 (all 1's in the last > > octec.) So now the test taker faces the dilemna of choosing between two > > subnetwork addressess and two "broadcast" addresses. > > Cisco would want to know if you really know subnetting. Hence, the > wording > of the question (which to my opinion is still correct). > > Arthur > > > >From: "John Neiberger" <[EMAIL PROTECTED]> > >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Re: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 09:19:53 -0700 > > > >I think I'll side with those who say there is no correct answer, but > >there is an answer that's closer to being correct than the others. > :-) > > > >The question is asking for a valid host in the 172.16.0.0/19 range. > >Answer D is not in that range! It is in the 172.16.64.0/19 network. > >Valid host addresses in the 172.16.0.0/19 range are: > > > >172.16.0.1 through 172.16.31.254 > > > >I would agree that by making a subtle adjustment to the question, > >answer D is the only answer possible. Given a /19 prefix length, the > >only possible host address given in the answers is D, which forces us > to > >change the question to fit the answer. > > > >This just appears to be a poorly worded question that not only allows > >you to figure out the most-correct answer eventually but also forces > you > >to deduce what the actual question is in the first place.In > other > >words, it's a typical Cisco test question! > > > >Regards, > >John > > > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM > >>> > >d. 172.16.80.255 > > > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - > >172.16.95.254. > > &g
Re: Sample CCNA test question..bogus?
I think you are losing sight of the real question, which is right on a cisco exam! That can ONLY be D. Whether this is the phrasing you would use in a production environment is totally irelevant. Neil Schneider ""John Neiberger"" <[EMAIL PROTECTED]> wrote in message sab0b1db.042@fsutil01">news:sab0b1db.042@fsutil01... > Okay, let's rephrase the question: > > You have variably subnetted 172.16.0.0/16 using a /19 mask. Someone > working with you is configuring a server to be placed at a remote > location that is on the 172.16.0.0/19 network, and he asks you for a > valid host address. > > Would you tell him to use 172.16.80.255? I don't think so. You would > make sure he uses an address from the 172.16.0.0/19 subnet, so it would > have to be in the range 172.16.0.1 through 172.16.31.254. > > And for the very same reason, I feel that D is not a good answer as the > original question is worded. > > John > > >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 11:10:10 AM >>> > this is assuming vlsm. when you have a class network with varibale > bits in the subnet mask that is different than the default subnet mask, > you have multiple subnets and multiple host on each subnet. This > question is telling us that there are 3 bits as subnet bits (since the > default for class B networks is 16) and the remaining 13 are host bits. > This arnagement (172.16.0.0/19) calculates out to be more than one > subnet and answer d falls in one of the valid subnet ranges. If thew > question was worded differently with a particular subnet such as > 172.16.30.x/19, then it would not be true. > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM > >>> > How could the wording be correct? 172.16.80.255 is a host address in > 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer > provided to that specific question as worded. I agree that it is > trying > to be a trick question, but it fails because of poor wording or a typo. > > Perhaps one of the answers should have been 172.16.15.255 or something > like that. That would have been tricky yet also correct given the > question that was being asked. > > John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> > I think the trick part of question here is that the answer d. > 172.16.80.255 > seems like a broadcast address because of the 255 (all 1's in the last > > octec.) So now the test taker faces the dilemna of choosing between > two > > subnetwork addressess and two "broadcast" addresses. > > Cisco would want to know if you really know subnetting. Hence, the > wording > of the question (which to my opinion is still correct). > > Arthur > > > >From: "John Neiberger" <[EMAIL PROTECTED]> > >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Re: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 09:19:53 -0700 > > > >I think I'll side with those who say there is no correct answer, but > >there is an answer that's closer to being correct than the others. > :-) > > > >The question is asking for a valid host in the 172.16.0.0/19 range. > >Answer D is not in that range! It is in the 172.16.64.0/19 network. > >Valid host addresses in the 172.16.0.0/19 range are: > > > >172.16.0.1 through 172.16.31.254 > > > >I would agree that by making a subtle adjustment to the question, > >answer D is the only answer possible. Given a /19 prefix length, the > >only possible host address given in the answers is D, which forces us > to > >change the question to fit the answer. > > > >This just appears to be a poorly worded question that not only allows > >you to figure out the most-correct answer eventually but also forces > you > >to deduce what the actual question is in the first place.In > other > >words, it's a typical Cisco test question! > > > >Regards, > >John > > > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM > >>> > >d. 172.16.80.255 > > > >This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - > >172.16.95.254. > > > >Arthur > > > > > > >From: "Bruce" <[EMAIL PROTECTED]> > > >Reply-To: "Bruce" <[EMAIL PROTECTED]> > > >To: [EMAIL PROTECTED] > > >Subject: Sample CCNA test question..bogus? > > >Date: Thu, 15 Mar 2001 15:11:07 +1100 > > > > > &
Re: Sample CCNA test question..bogus?
I'm not losing sight of that, actually. In fact, I mentioned this in an earlier post. I'm simply trying to correct the couple of people who think that D is technically correct. This is a pretty typical question for a Cisco test, and you'd definitely want to answer D in that situation. However, there were a few people that seemed to think that D was actually a valid answer given that question, and it isn't. Splitting hairs, I know, but I just wanted to make sure they understood my point. Then again, maybe I need to take a nap! :-) Regards, John >>> "Neil Schneider" <[EMAIL PROTECTED]> 3/15/01 2:52:31 PM >>> I think you are losing sight of the real question, which is right on a cisco exam! That can ONLY be D. Whether this is the phrasing you would use in a production environment is totally irelevant. Neil Schneider ""John Neiberger"" <[EMAIL PROTECTED]> wrote in message sab0b1db.042@fsutil01">news:sab0b1db.042@fsutil01... > Okay, let's rephrase the question: > > You have variably subnetted 172.16.0.0/16 using a /19 mask. Someone > working with you is configuring a server to be placed at a remote > location that is on the 172.16.0.0/19 network, and he asks you for a > valid host address. > > Would you tell him to use 172.16.80.255? I don't think so. You would > make sure he uses an address from the 172.16.0.0/19 subnet, so it would > have to be in the range 172.16.0.1 through 172.16.31.254. > > And for the very same reason, I feel that D is not a good answer as the > original question is worded. > > John > > >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 11:10:10 AM >>> > this is assuming vlsm. when you have a class network with varibale > bits in the subnet mask that is different than the default subnet mask, > you have multiple subnets and multiple host on each subnet. This > question is telling us that there are 3 bits as subnet bits (since the > default for class B networks is 16) and the remaining 13 are host bits. > This arnagement (172.16.0.0/19) calculates out to be more than one > subnet and answer d falls in one of the valid subnet ranges. If thew > question was worded differently with a particular subnet such as > 172.16.30.x/19, then it would not be true. > > >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 12:04PM > >>> > How could the wording be correct? 172.16.80.255 is a host address in > 172.16.64.0/19, *not* 172.16.0.0/19. There is no correct answer > provided to that specific question as worded. I agree that it is > trying > to be a trick question, but it fails because of poor wording or a typo. > > Perhaps one of the answers should have been 172.16.15.255 or something > like that. That would have been tricky yet also correct given the > question that was being asked. > > John > > >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 9:51:53 AM >>> > I think the trick part of question here is that the answer d. > 172.16.80.255 > seems like a broadcast address because of the 255 (all 1's in the last > > octec.) So now the test taker faces the dilemna of choosing between > two > > subnetwork addressess and two "broadcast" addresses. > > Cisco would want to know if you really know subnetting. Hence, the > wording > of the question (which to my opinion is still correct). > > Arthur > > > >From: "John Neiberger" <[EMAIL PROTECTED]> > >Reply-To: "John Neiberger" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Re: Sample CCNA test question..bogus? > >Date: Thu, 15 Mar 2001 09:19:53 -0700 > > > >I think I'll side with those who say there is no correct answer, but > >there is an answer that's closer to being correct than the others. > :-) > > > >The question is asking for a valid host in the 172.16.0.0/19 range. > >Answer D is not in that range! It is in the 172.16.64.0/19 network. > >Valid host addresses in the 172.16.0.0/19 range are: > > > >172.16.0.1 through 172.16.31.254 > > > >I would agree that by making a subtle adjustment to the question, > >answer D is the only answer possible. Given a /19 prefix length, the > >only possible host address given in the answers is D, which forces us > to > >change the question to fit the answer. > > > >This just appears to be a poorly worded question that not only allows > >you to figure out the most-correct answer eventually but also forces > you > >to deduce what the actual question is in the first place.In > other > >words, it'
Re: Sample CCNA test question..bogus?
Wow! Thankyou all for your responses. I can see that either answer D is correct, or there is no correct answer depending on how you interpret the (poorly worded) question. The question came from a sample test done by a friend of mine, who being similarly confused by it, asked me for help. (I am a CCNP/CCDA). I will ask him where it was published and what the official correct answer is. BR. ""Bruce"" <[EMAIL PROTECTED]> wrote in message 98pjed$mv1$[EMAIL PROTECTED]">news:98pjed$mv1$[EMAIL PROTECTED]... > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0 > > b. 172.16.64.0 > > c. 172.16.63.255 > > d. 172.16.80.255 > > > > Which one and why? > > (I say none of them. Am I going mad?) > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Sample CCNA test question..bogus?
Wasn't the correct answer E. None of the above?? Oh wait, that was a different question >>> "Bruce" <[EMAIL PROTECTED]> 3/15/01 3:53:52 PM >>> Wow! Thankyou all for your responses. I can see that either answer D is correct, or there is no correct answer depending on how you interpret the (poorly worded) question. The question came from a sample test done by a friend of mine, who being similarly confused by it, asked me for help. (I am a CCNP/CCDA). I will ask him where it was published and what the official correct answer is. BR. ""Bruce"" <[EMAIL PROTECTED]> wrote in message 98pjed$mv1$[EMAIL PROTECTED]">news:98pjed$mv1$[EMAIL PROTECTED]... > Q. Which one of the following is a valid host using the address of > 172.16.0.0 /19? > > a. 172.16.32.0 > > b. 172.16.64.0 > > c. 172.16.63.255 > > d. 172.16.80.255 > > > > Which one and why? > > (I say none of them. Am I going mad?) > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Sample CCNA test question..bogus?
John, While your answer is technically accurate. The fact remains that unfortunatly the Cisco tests will throw poorly worded questions at you and you simply need to figure out the "best" answer sometimes. It is a painful truth. So, for the test you answer "D", for real life, you get clarification before answering. Tom McNamara MCSE, CCNA Account Manager, U.S. Datacom [EMAIL PROTECTED] Direct line: (407)398-6521 Toll-Free: (800)216-5517 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of John Neiberger Sent: Thursday, March 15, 2001 12:14 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Sample CCNA test question..bogus? I disagree. Valid hosts in 172.16.0.0/19 are: 172.16.0.1 through 172.16.31.255 I guarantee you that any other interpretation will make life miserable for you eventually, especially in a production environment where you actually use CIDR or VLSM. A good example would be if you were running BGP in a production environment that actually connected to the internet. Let's say you were Joe's ISP and were assigned 172.16.0.0/19. This is *very* specific...you can only advertise 172.16.0.1 through 172.16.31.254. Most likely, 172.16.32.1 through 172.16.63.254 is going to be assigned to someone else. If you followed your logic and advertise the entire 172.16.0.0/16, you will be getting some nasty phone calls or nastygrams in your email box. Companies tend to get a little upset with you if you start advertising their address block. In that spirit, I assume when a test question says something as specific as 172.16.0.0/19 that they *really* mean it. John >>> "Lowell Sharrah" <[EMAIL PROTECTED]> 3/15/01 9:54:56 AM >>> I believe that answer D is correct and here is why Vaslid hosts in the network 172.16.0.0/19 are as follows 172.16.64.1-172.16.95.254 172.16.128.1-172.16.159.254 172.16.192.1-172.16.223.254 172.16.32.1-172.16.63.265 172.16.160.1-172.16.191.254 172.16.96.1-172.16.127.254 .255 is broadcast >>> "John Neiberger" <[EMAIL PROTECTED]> 03/15/01 11:19AM >>> I think I'll side with those who say there is no correct answer, but there is an answer that's closer to being correct than the others. :-) The question is asking for a valid host in the 172.16.0.0/19 range. Answer D is not in that range! It is in the 172.16.64.0/19 network. Valid host addresses in the 172.16.0.0/19 range are: 172.16.0.1 through 172.16.31.254 I would agree that by making a subtle adjustment to the question, answer D is the only answer possible. Given a /19 prefix length, the only possible host address given in the answers is D, which forces us to change the question to fit the answer. This just appears to be a poorly worded question that not only allows you to figure out the most-correct answer eventually but also forces you to deduce what the actual question is in the first place.In other words, it's a typical Cisco test question! Regards, John >>> "Arthur Simplina" <[EMAIL PROTECTED]> 3/15/01 8:46:27 AM >>> d. 172.16.80.255 This belongs to subnet 172.16.64.0 with host range of 172.16.64.1 - 172.16.95.254. Arthur >From: "Bruce" <[EMAIL PROTECTED]> >Reply-To: "Bruce" <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Sample CCNA test question..bogus? >Date: Thu, 15 Mar 2001 15:11:07 +1100 > >Q. Which one of the following is a valid host using the address of >172.16.0.0 /19? > >a. 172.16.32.0 > >b. 172.16.64.0 > >c. 172.16.63.255 > >d. 172.16.80.255 > > > >Which one and why? > >(I say none of them. Am I going mad?) > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
