"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. <g> 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
> > >
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