计算机英语chapter008,计算机专业英语Chapter008

Chapter 008 Communications and Networks

Multiple Choice Questions

1. One of the most dramatic changes in connectivity and communications in the past few years has been:

A. widespread use of mobile devices with wireless Internet connectivity

B. chat rooms

C. satellite uplinks

D. running programs on remote computers

2. In a communication system, which among the following originate and accept messages in the form of data, information, and/or instructions?

A. Communication channel

B. Sending and receiving devices

C. Connection devices

D. Data transmission specifications

3. In a communication system, which among the following convert messages into packets that can travel across the communication channel?

A. Connection devices

B. Sending and receiving devices

C. Storage devices

D. Secondary devices

4. Which physical connection is the fastest?

A. Twisted pair

B. Coaxial cable

C. Fiber-optic cable

D. Microwave

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