CompTIA Network+ (N10-009) — Question 278

A network administrator needs to deploy a subnet using an IP address range that can support at least 260 devices with the fewest wasted addresses. Which of the following subnets should the administrator use?

Answer options

• A. 172.16.0.0/24
• B. 172.25.2.0/23
• C. 172.30.1.0/22
• D. 172.33.0.0/21

Correct answer: B

Explanation

The correct choice is B, 172.25.2.0/23, which provides 510 usable addresses, sufficient for 260 devices without significant waste. Option A offers only 254 usable addresses, which is insufficient, while options C and D provide more addresses than needed, leading to greater wastage of IP space.