In the first question, Answer B (10.1.8.192/23) is not a valid network.
Henry
-----Original Message-----
From: John Neiberger
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: 4/5/01 1:40 PM
Subject: Re: IP Prefix-List
Comments inline...
>>> "Hunt Lee" <[EMAIL PROTECTED]> 4/5/01 2:13:29 PM >>>
Hello everyone,
I'm really confused on the following IP Prefix-List questions.
Can
somebody please shed some light on this?
Q) IP prefix-list permit 10.1.0.0/16 ge 20 le 27 matches routes to
which of the following networks?
A) 10.1.128.0/18
B) 10.1.8.192/23
C) 10.1.0.0/16
D) 10.2.160.0/23
E) 10.1.2.0/24
I chose B, but the answer is E. I understand that GE is the minimum
mask length of matching routes, and LE is maximum length. But what's
wrong with answers B OR D?
ME: I don't see anything wrong with B, but D does not match
10.1.0.0/16. Does anyone else see something wrong with B? E is also a
correct answer, so I would have answered B and E.
Q) IP prefix-list permit 172.16.2.0/24 ge 25 le 27 matches routes
to
which of the following networks?
A) 172.16.3.128/25
B) 172.16.2.128/25
C) 172.16.2.0/24
D) 172.16.2.192/27
I chose A, but the answer is B and D.
ME: A does not match 172.16.2.0/24. The prefix length on C is too
short. Therefore, the answers are B and D. B matches 172.16.2.0/24
*and* has a mask length between 25 and 27 inclusive. The same goes for
D.
HTH,
John
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