What is the default subnet mask for a Class B network?

A.
255.0.0.0

B.
255.255.0.0

C.
255.255.255.0

D.
255.255.255.255

Explanation:
Section Reference: Categorizing IPv4 Addresses
The IPv4 classification system is known as the classful network architecture and is broken down into five
sections. Class B has a default subnet mask of 255.255.0.0.