CompTIA Network+ (N10-007) — Question 387

A network administrator needs to create a network for 4,000 devices while conserving address space. Which of the following subnet masks should be used on this network?

Answer options

Correct answer: C

Explanation

The correct answer is C, 255.255.240.0, which allows for 4,096 IP addresses (4,094 usable) in a subnet, accommodating the requirement for 4,000 devices. Option A provides too many addresses, while B and D do not offer enough. Option E provides only 16 addresses, which is insufficient for the needs of the network.