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Data Communications Basics

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Questions and Answers

What does the term 'telecommunication' mean?

Communication using telephones, telegraphs, and televisions

Communication between individuals in close proximity

Communication at a distance (correct)

Communication using data exchange between devices

What is the meaning of the term 'data' in the context of data communications?

Information presented in a specific language

Information shared over long distances

Information transmitted through wire cables

Information presented in any agreed upon form (correct)

What are the fundamental characteristics that determine the effectiveness of a data communications system?

Telecommunication, telephony, and television

Distance, speed, and security

Delivery, accuracy, timeliness, and jitter (correct)

Hardware, software, and transmission medium

Why must the system deliver data accurately in data communications?

To avoid alteration of data during transmission Signup and view all the answers

What does 'jitter' refer to in the context of data communications?

The fluctuation in signal timings Signup and view all the answers

What is the main requirement for data communications to occur between two devices?

Availability of a combination of hardware and software Signup and view all the answers

What does 'timely delivery' refer to in the context of video and audio transmission?

Delivering data as they are produced Signup and view all the answers

How is 'jitter' defined in the context of packet delivery?

Variation in packet arrival time Signup and view all the answers

Which component of a data communication system is responsible for sending the data message?

Sender Signup and view all the answers

What does a transmission medium represent in a data communications system?

The physical path for message transmission Signup and view all the answers

What is the role of a protocol in data communications?

Set of rules governing data communications Signup and view all the answers

Which scenario best illustrates 'jitter' in video packet delivery?

Packets arriving with uneven delay causing variation in video quality Signup and view all the answers