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單項選擇題

Which one of the binary bit patterns below denotes a Class B address?（）

A. 0xxxxxxx
B. 10xxxxxx
C. 110xxxxx
D. 1110xxxx
E. 11110xxx

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單項選擇題

What is the IP address range for the first octet in a class B address, in binary form?（）

A.00000111-10001111
B.00000011-10011111
C.10000000-10111111
D.11000000-11011111
E.11100000-11101111
F.None of the above

單項選擇題

What is the subnet for the host IP address 201.100.5.68/28?（）

A.201.100.5.0
B.201.100.5.32
C.201.100.5.64
D.201.100.5.65
E.201.100.5.31
F.201.100.5.1