The default subnet mask for a Class B network is:
The default subnet mask for a Class B network is:
A . 0.0.0.255
B . 0.0.255.255
C . 255.0.0.0
D . 255.255.0.0
Answer: D
Explanation:
Class A default subnet mask is 255.0.0.0. Class B default subnet mask is 255.255.0.0. Class C default subnet mask is 255.255.255.0.
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