Which three netmasks are valid Class B contiguous subnet masks?

seenagape

13 years ago

Which three netmasks are valid Class B contiguous subnet masks? (Choose three.)

A.
255.252.0.0

B.
255.255.64.0

C.
255.255.252.0

D.
255.255.255.0

E.
255.255.255.32

F.
255.255.255.128