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Data Communications and Telecommunications

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Data Communications and Telecommunications

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Questions and Answers

What is the primary function of communications processors?

To measure the data rate of the channel
To encode data using ASCII or EBCDIC
To provide processing capabilities between the computer and the communications channel (correct)
To provide data transmission capabilities

What is the unit of measurement for data rate?

Characters per second
Bytes per second
Bits per second (bps) (correct)
Baud

What is the primary difference between analog and digital signals?

Analog signals are used for video transmission, while digital signals are used for audio transmission
Analog signals have a higher data rate than digital signals
Analog signals are used for data transmission, while digital signals are used for voice transmission
Analog signals are continuous, while digital signals are discrete (correct)

What is the purpose of encoding data in a communications channel?

To represent characters using ASCII, EBCDIC, or Unicode (D) Signup and view all the answers

What is the relationship between baud rate and data rate?

Baud rate is equal to data rate (C) Signup and view all the answers

What is bandwidth in the context of communications channels?

The amount of data that can be transmitted over a channel (C) Signup and view all the answers

What is the primary purpose of Satellite microwave systems?

To transmit data between earth stations (C) Signup and view all the answers

What is the main characteristic of Fiber Optic Cable?

Bundles of glass or plastic fibers, about the size of a human hair (D) Signup and view all the answers

What is the advantage of Medium Earth Orbit Satellites (MEOs) over Low Earth Orbit Satellites (LEOs)?

They require fewer satellites (D) Signup and view all the answers

What is the primary application of Geostationary Orbit Satellites?

To be used by government and for weather (C) Signup and view all the answers

What is the primary characteristic of Coaxial Cable?

It is a type of copper wire insulated with rubber and plastic (B) Signup and view all the answers

What is the disadvantage of Twisted Pair Cable?

It is prone to electromagnetic interference (C) Signup and view all the answers