Data Communication Overview

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Questions and Answers

Which component of data communications is responsible for the physical path a message travels from sender to receiver?

Transmission medium (correct)
Sender
Receiver
Message

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

Agreement between communication devices
Variation in text representation
Delay in message delivery
Uneven delay in packet arrival time (correct)

In data communications, how are text symbols represented?

As sequences of bits (correct)
As sound waves
As color patterns
As image pixels

What is the main difference between data communication and telecommunications?

Data communication involves movement of computer information only, while telecommunications includes voice and video transmission. (B) Signup and view all the answers

What is the purpose of a protocol in data communications?

To govern data communications with rules (A) Signup and view all the answers

Why has the line between data communication and telecommunications blurred in recent years?

Due to the increased use of communication systems that combine both data and voice transmission. (B) Signup and view all the answers

Which type of communication allows both stations to transmit and receive simultaneously?

Full-duplex (A) Signup and view all the answers

Why is it necessary for communicating devices to be part of a communication system for data communications to occur?

To ensure the correct destination of data delivery. (B) Signup and view all the answers

What does the term 'telecommunication' specifically refer to?

Communication that occurs over long distances. (C) Signup and view all the answers

Why are hardware and software both essential components in a data communications system?

Hardware is responsible for physical device connectivity, while software manages data processing and transfer. (A) Signup and view all the answers

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