You have an IP address with a prefix notation of /27. What is the dotted-decimal form of the subnet mask?

A) 255.255.255.0
B) 255.255.255.128
C) 255.255.255.192
D) 255.255.255.224

D
Explanation: The binary representation of /27 is 11111111.11111111.11111111.11100000 (27 1s and 5 0s), which is 255.255.255.224 in dotted-decimal format. Therefore, the dotted-decimal format of a /27 prefix is 255.255.255.224.

Computer Science & Information Technology

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