题目内容

The () acts as a central distribution point for getting data to its destination.

A. modem
B. switch
C. router
D. gateway

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Bluetooth can be used to link devices in a ().

A. WAN
B. MAN
C. LAN
D. PAN

The speed of a computer network connection is usually rated in ().

A. Hz
B. Mbps
C. KB
D. GB

Which of the following are the topology of network?

A. star
B. relation
C. tree
D. mesh

请思考一下：3500/1000*1000,结果是_______