CompTIA Network+ (N10-009) — Question 313

A network administrator is creating a subnet that will include 45 separate hosts on a small private network within a large network architecture. Which of the following options is the most efficient use of network addresses when assigning this network?

Answer options

• A. 10.0.50.128/25
• B. 10.7.142.128/27
• C. 10.152.4.192/26
• D. 10.192.1.64/28

Correct answer: C

Explanation

The correct answer is C, as a /26 subnet provides 64 IP addresses, which can support 45 hosts plus necessary network and broadcast addresses. The other options either provide too few addresses (like /28 and /27) or are excessive for the requirement, leading to inefficient address space usage.