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單項(xiàng)選擇題

What represents the binary equivalence of 207?（）

A. 11001111
B. 11101011
C. 11010111
D. 11010101

單項(xiàng)選擇題

Which two statements are true of a network mask?（）

A. A subnet mask specifies the portion of an IP address that is in a binary format
B. A subnet mask specifies the portion of an IP address that is in a decimal format
C. A subnet mask specifies the portion of an IP address that represents a network prefix
D. A subnet mask specifies the portion of an IP address that represetns network hosts