Subnetting class exam questions

May 24, 2005 2 Replies

Hello,



From all those who have taken the current CCNA exam, which type of subnetting questions did you have? Does the exam focus on a particular class (Class C hopefully). Were you required to hammer out all the subnets available in a class A range? Any tips on increasing subnetting speed (memorizing powers of 2)?


Thanks in advance.



Dan Cox


I use the 256- (number you want to increase by).

hmm, let me explain....

you want to go up in 8's? then it's 256-8 = 248

so 255.255.255.248 will be

..0 ..8 ..16 ..32 etc

if you're doing it to a class b it's the same. lets try going up in 4's instead... so, 256-4 = 252

255.255.252.0

if was start at 172.16.0.0 then you would get

172.16.0.0 172.16.4.0 172.16.8.0 172.16.12.0

make any sense?

I use this method pretty much entirely.

when i did it was just class C

with a 255.255.255.240 mask

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