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

1.	What is the default subnet mask for a class B network?
A.	127.0.01
B.	255.0.0.0
C.	255.255.0.0
D.	255.255.255.0
E.	None of the above
Answer» D. 255.255.255.0

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

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