The network admin decides to assign a class B IP address to a host in the network. Identify which of the following addresses fall within a class B IP address range.

The network admin decides to assign a class B IP address to a host in the network. Identify which of the following addresses fall within a class B IP address range.
A . 255.255.255.0
B . 18.12.4.1
C . 172.168.12.4
D . 169.254.254.254

View Answer

Answer: B

Explanation:

Class B IP addresses range from 128.0.0.0 to 191.255.255.255. The first two bits of the first octet in a Class B address are always set to ‘10’, and the default subnet mask is 255.255.0.0. Option B, 18.12.4.1, falls within this range, with the first octet being 18, which is between 128 and 191.

Reference: The information is based on the standard IP address classification as per the IPv4 protocol1234.