题目内容

WAN shares the feature that they are limited in range: typically they cover one building. ( )

A. 对
B. 错

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Unix is a single-user, multi-tasking operating system with a command-line interface. ( )

A. 对
B. 错

When power is removed, information in RAM is remained. ( )

A. 对
B. 错

Bridges can only connect LANS of the same type. ( )

A. 对
B. 错

Today most networks use a physical star topology. ( )

A. 对
B. 错