Subnetting Speed Practice at CCENTSkills

 In 200-301 V1 CCC No Category on Purpose, News

Just a heads up, for those of you who are past the ICND1 exam and CCENT. I just posted a new subnetting practice question at the CCENTSkills blog, and answers. Of course, subnetting matters a lot on both ICND1 and ICND2, so just wanted to make sure you saw it if interested. That’s it!

Wendell

Subnet Speed Practice #1 - Answers
$40/router to get IPv6?
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Patrick

Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0? (Choose two)
A. 113.10.4.0
B. 186.54.3.0
C. 175.33.3.255
D. 26.35.2.255
E. 17.35.36.0
subnet increment is 2, subnet mask is 23
so, host range will be from 2.1 to 3.254, and … so, the answer is B and D.

why do we have to start at 2 why cant the range be 0.1 1.255 ? is the question assuming no ip subnet zero is being used?

Mike

Magic number is 2

So A (113.10.4.0) would be a subnet ID (multiple of magic number in 3d octet with 0 in 4th)
B (186.54.3.0) could be a host (subnet ID 186.54.2.0, host addresses from 186.54.2.1 – 186.54.3.254, broadcast 186.54.3.255)
C would be a broadcast address
D could be a host
E would be a subnet ID (multiple of magic number in 3d octet with a 0 in the 4th octet)

I’d say B and D. Hope my logic is sound.

Wendell Odom

I get your comment now.
I agree with your logic.
I’m not a fan of the question. I respect that it’s difficult to avoid giving away the answer, but I think it’s too obscure. I’d prefer one that lists a specific subnet, EG, which are usable addresses in the same subnet as address/mask 113.10.4.5/23? It exercises the same logic.

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