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Data Transmission Characteristics

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Questions and Answers

What is the primary function of a transponder in a satellite system?

To transmit signals from earth to other satellites

To convert analog signals to digital signals

To amplify and retransmit signals received from an earth station (correct)

To receive signals from other satellites and transmit them to earth

What is the maximum data rate supported by a twisted-pair cable?

1 Mbps

100 Mbps

4 Mbps (correct)

1000 Mbps

What is a common problem with twisted-pair cables?

They have a high data rate

They are not susceptible to noise

They are not secure

They are prone to electromagnetic interference (correct)

What is the maximum data rate supported by a coaxial cable?

500 Mbps Signup and view all the answers

What is the main advantage of using coaxial cables over twisted-pair cables?

Higher data rate Signup and view all the answers

What is the primary characteristic of analog signals?

Varies in amplitude, frequency and/or phase Signup and view all the answers

What is the measurement unit of data rate?

Bits per second Signup and view all the answers

Which of the following is an example of a digital signal?

Computer signal Signup and view all the answers

What is the term used to describe the physical medium used for transmission?

Transmission media Signup and view all the answers

How are analog signals typically transmitted?

By varying the amplitude and frequency of the wave Signup and view all the answers

What is the relationship between baud rate and bits per second?

Baud rate is equivalent to bits per second Signup and view all the answers

What is the primary function of communications processors in a data communications system?

To provide processing capabilities between the computer and the communications channel Signup and view all the answers

What type of data can be transmitted over communications channels?

Text, video, and audio Signup and view all the answers

What is the sequence of data transmission over a communications channel?

Each bit is sent one after the other Signup and view all the answers

What are the two main types of communications hardware?

Communications channel and communications processors Signup and view all the answers

What is the term often used interchangeably with Telecommunications?

Data Communications Signup and view all the answers

What is the medium over which data is transmitted in a data communications system?

Communications channel Signup and view all the answers