Hi Frank,
I believe the answer is calculated as follows:
By subtracting 256 - 240 = 16 we get that each subnet is a multiple of
16. The resulting subnets are:
0
16
32
48
64
80
96
112
128
144
160
176
192
208
224
240
I believe the CCNA test doesn't allow the all 0's (subnet 0) or all 1's
subnet (subnet 240)
That leaves us with the following subnets:
0 (not allowed)
16 (allowed nodes 17-30; 31 is a broadcast for that subnet)
32 (allowed nodes 33-46; 47 is a broadcast for that subnet)
48 (allowed nodes 49-62; 63 is a broadcast for that subnet)
64 (allowed nodes 65-78; 79 is a broadcast for that subnet)
80 (allowed nodes 81-94; 95 is a broadcast for that subnet)
96 etc....
112 etc....
128
144
160
176
192
208
224 (allowed nodes 225-238; 239 is a broadcast for that subnet)
240 (not allowed)
Test Choices:
( ) 192.168.100.16 (no, it's a subnet)
( ) 192.168.100.239 (no, it's a broadcast)
(X ) 192.168.100.151
( ) 192.168.100.176 (no, it's a subnet)
(X) 192.168.100.61
(X) 192.168.100.49
The X's are the correct answers. By the way, if I screwed this up,
please correct me.
-Michael
Michael Bennett
Onward Technologies
222 N. LaSalle Street
Suite 1150
Chicago, IL. 60601
312-795-9500
mbennett@xxxxxxxxxxxxx
-----Original Message-----
From: Frank H [mailto:nobody@xxxxxxxxxxxxxx]
Sent: Monday, May 06, 2002 12:32 PM
To: associate@xxxxxxxxxxxxxx
Subject: Errors on the CCNA Exam? [1:9181]
Hello,
I wrote a post previously, asking about the Exam marking formula. I
wrote the test last week with a score of 937. I asked the question on my
previous post weather I would find any errors on the test. I did find
one. The question was about IP addressing and it went something like
this: (I will keep it in a general format so as not to break the NDA -
it's common knowledge to expect a question such as this on the exam).
If given a network address of 192.168.100.0, subnet mask
255.255.255.240, select the hosts allowable (choose three).
( ) 192.168.100.16
( ) 192.168.100.239
( ) 192.168.100.151
( ) 192.168.100.176
( ) 192.168.100.61
( ) 192.168.100.49
My answer - none of them. I wrote that in after clicking the comment
button on the bottom right corner of the screen. The allowable host
range is 192.168.100.1 to 192.168.100.14.
I think there may be other errors that I could not see since the answers
are not revealed at the end of the exam (as everyone knows). This is
probably the reason why not one person can get a perfect score. If your
score is on the low end (close to 849), these errors will most likely
make you fail.
I was expecting a much harder test, and all the questions I received, I
knew the answer to (or at least I thought I did). I received 100% on 5
categories and 60%, 80%, and 83% on the 3 others.
I know passing the test is all that's required, but for anyone studying
for this test and others will know - you put in many hours of study and
are passionate about being the best you can be - it becomes a little
disappointing when your score doesn't reflect your perception of what
you thought you would get. I prepared for the test with several routers
and Lammle's and Odom's CCNA books. Lammle's book is all that's really
required for this test, but Odom's book really over prepares you. I
prefered Odom's book the best.
Is anyone else concerned about errors on the test? Is it better that way
- it makes passing the test a little more difficult and therefore more
of a true indicator of your knowledge of the material and creates less
paper certified people? Am I being delusional (about the errors) or is
it a valid question to ask of the writers of the CCNA test?
Your thoughts,
Frank
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