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Subnetting - Technical MCQs

Q1:

What is the subnetwork address for a host with the IP address 200.10.5.68/28?

A 200.10.5.56

B 200.10.5.32

C 200.10.5.64

D 200.10.5.0

ANS:C - 200.10.5.64

This is a pretty simple question. A /28 is 255.255.255.240, which means that our block size is 16 in the fourth octet. 0, 16, 32, 48, 64, 80, etc. The host is in the 64 subnet.