题目内容

To connect to a LAN, a computer requires network circuitry, sometimes referred to as a ().

A. sound card
B. graphics card
C. memory card
D. network interface card

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

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

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