Maggie wants to create a small subnetwork for the Human Resources servers that her organization uses. There are currently 10 servers, but she also needs to plan for 50 percent growth over the next two years. Which of the following subnet masks would give her adequate IP address space while leaving the fewest number of unused IP addresses in the block?
A) 255.255.255.128
B) 255.255.255.224
C) 255.255.255.240
D) 255.255.255.248

Question

Quizplus · Accepted Answer

A /28 subnet mask (255.255.255.240) provides 16 IP addresses, which is sufficient for 15 servers (10 current + 5 for 50% growth), leaving only 1 unused address.

Maggie Wants to Create a Small Subnetwork for the Human