CompTIA Server+ (SK0-004) — Question 38

A server administrator has been given the following information from the network team in order to configure IP addresses on a new server:
Network Address: 199.90.10.32/28
The network team also instructed the server administrator to use the LAST usable address on the given network. Which of the following IP address/subnet mask combinations should the server administrator use?

Answer options

• A. 199.90.10.49, 255.255.255.240
• B. 199.90.10.47, 255.255.255.224
• C. 199.90.10.47, 255.255.255.240
• D. 199.90.10.48, 255.255.255.240

Correct answer: C

Explanation

The correct answer is C because the last usable IP address in the subnet 199.90.10.32/28 is 199.90.10.47, which corresponds with the subnet mask of 255.255.255.240. Options A and B are incorrect as they either fall outside the subnet range or use an incorrect mask. Option D suggests an address that is not the last usable one in the given range.