>I saw a similar prep question where they said class b with a 10 bit mask,
>which cisco wants you to see as 16+10=26. That is so silly to me. if you
>want to say /26, just say it already.
>
>Brian "Sonic" Whalen
>Success = Preparation + Opportunity
It is silly, but eventually I got tired of arguing with Cisco
training about changing their materials to reflect CIDR addressing.
Priscilla probably fought the same battle.
I suspect the chief reason was that they really didn't want to go
back and change materials. The second reason, however, is that
understanding the classful notation is important for RIPv1 and IGRP.
When I teach addressing, I always start with the CIDR-style, and,
only when that is well understood, add that there are some legacy
methods the students should know about.
>
>
>On Sun, 13 May 2001, Gareth Hinton wrote:
>
>> Whichever way you look at it, there should be 1022 hosts, you could then
>> sort out what they're getting at from the possibilities left, and you
>should
>> get to 16384. Unfortunately there are none.
>>
>> I would not be surprised if answer c) was supposed to be the right
answer.
>I
>> saw an explanation quite a while ago, which I don't agree with at all,
that
>> says the subnet mask of 22 bits is calculated on top of the network mask.
>> So, if we wrote the mask the way we normally do, for a class A it would
be
>a
>> /30.
>> This would give 4194302 subnets and 2 hosts.
>>
>> So even if this explanation of their bad logic is correct, they've
b*ggered
>> the maths up.
>>
>> As a matter of interest, where are you getting these questions from?
>>
>>
>> Gaz
>>
>>
>> ""Victim"" wrote in message
>> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> > If you have a 22 bit subnet mask , how many subnets and hosts do you
>have?
>> >
>> > a. 8190 subnets, 4096hosts
>> > b. 2096138 subnets, 6 hosts
>> > c. 4094302 subnets, 2 hosts
>> > d. 16384 subnets, 2046 hosts
> > > e. 1024 subnets, 4 hosts
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