Given a host IP address of 172.16.1.154 and a subnet mask of 255.255.254.0, what is the network ID for this host?
A) 172.16.0.0
B) 172.16.1.0
C) 172.16.2.0
D) 172.0.0.0

Question

Quizplus · Accepted Answer

The subnet mask 255.255.254.0 corresponds to /23, which means the first 23 bits are the network portion. Given the IP address 172.16.1.154, when you apply the subnet mask, you find that the network ID is 172.16.0.0. This is because the 23rd bit falls within the third octet, dividing it into blocks of 2 (0-1, 2-3, etc.), making 0 the starting block for this IP address.

Given a Host IP Address of 172