CompTIA Server+ (SK0-005) — Question 107

A server administrator needs to configure a server on a network that will have no more than 30 available IP addresses. Which of the following subnet addresses will be the MOST efficient for this network?

Answer options

• A. 255.255.255.0
• B. 255.255.255.128
• C. 255.255.255.224
• D. 255.255.255.252

Correct answer: C

Explanation

The correct answer is C, 255.255.255.224, which provides 30 usable IP addresses (32 total minus 2 for network and broadcast addresses). Option A offers 254 addresses, which is excessive, option B provides 126 addresses, also more than needed, and option D only allows for 2 usable addresses, which is insufficient for the requirement.