An administrator is given the following network information to configure a server with a static IP address: 10.152.0.4/21. Which of the following is the subnet mask for the given IP address?
A) 255.248.0.0
B) 255.255.128.0
C) 255.255.248.0
D) 255.255.255.248

Question

Quizplus · Accepted Answer

A /21 subnet mask corresponds to 255.255.248.0, as it uses 21 bits for the network portion and 11 bits for the host portion.

An Administrator Is Given the Following Network Information to Configure