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. <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
> >
> >
> >
> >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]
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
