CompTIA Network+ (N10-008) — Question 712

A network administrator is trying to create a subnet, which is the most efficient size possible, for 31 laptops. Which of the following network subnets would be best in this situation?

Answer options

• A. 10.10.10.0/24
• B. 10.10.10.0/25
• C. 10.10.10.0/26
• D. 10.10.10.0/27

Correct answer: C

Explanation

The correct answer is C (10.10.10.0/26) because it provides 64 IP addresses, which is sufficient for the 31 laptops while minimizing wastage. Option A provides too many addresses (256), while B has 128, and D only has 32, which is not enough to accommodate all devices.