As the network engineer, you are asked to design a plan for an IP subnet that calls for 25 subnets. The largest subnet needs a minimum of 750 hosts. Management requires that a single mask must be used throughout the Class B network. Which of the following lists a private IP network and mask that would meet the requirements?
A) 172.16.0.0 / 255.255.192.0
B) 172.16.0.0 / 255.255.224.0
C) 177.16.0.0 / 255.255.248.0
D) 172.16.0.0 / 255.255.254.0

Question

Quizplus · Accepted Answer

C) The correct answer is 177.16.0.0 / 255.255.248.0 because the only mask that would fit the requirements of 25 subnets and 750 hosts is 225.255.248.0, or /21, which would give you 32 subnets and 2046 hosts per subnet.

As the Network Engineer, You Are Asked to Design a Plan