Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 55
Q721:
What does the data rate represent?
A. Number of signal elements/sec
B. Number of data elements/sec
C. Modulation speed
D. Number of pulses/sec
Correct Answer:
B
Chapter: 55
Q722:
What is another name for the signal rate?
A. Data rate
B. Bit rate
C. Baud rate
D. Frame rate
Correct Answer:
C
Chapter: 55
Q723:
Fill in the blank: Signal rate is also known as ______.
A. Pulse rate
B. Modulation rate
C. Baud rate
D. All of the above
Correct Answer:
D
Chapter: 55
Q724:
Fill in the blank: Data rate is also referred to as ______ rate.
A. Signal
B. Bit
C. Baud
D. Frame
Correct Answer:
B
Chapter: 55
Q725:
What is the unit of measurement for signal rate?
A. Bits per second
B. Baud
C. Frames per second
D. Cycles per second
Correct Answer:
B
Chapter: 55
Q726:
If a signal has a signal rate of 100 bauds, how many data elements are sent per second if each signal element carries 1 data element?
A. 100
B. 50
C. 200
D. 150
Correct Answer:
A
Chapter: 55
Q727:
Fill in the blank: The number of signal elements sent in 1 second is measured in ______.
A. Baud
B. Bits
C. Frames
D. Bytes
Correct Answer:
A
Chapter: 55
Q728:
What happens to the signal rate if each signal element carries 2 data elements?
A. It halves
B. It doubles
C. It remains the same
D. It triples
Correct Answer:
A
Chapter: 55
Q729:
Fill in the blank: If a signal has a signal rate of 200 bauds and carries 2 data elements per signal element, the data rate is ______.
A. 400 bps
B. 100 bps
C. 200 bps
D. 800 bps
Correct Answer:
A
Chapter: 55
Q730:
What is the relationship between data rate and signal rate?
A. Data rate is always higher
B. Signal rate is always higher
C. They are proportional
D. They are unrelated
Correct Answer:
C
Chapter: 55
Q731:
If the signal rate is 100 bauds and each signal element carries 3 data elements, what is the data rate?
A. 100
B. 200
C. 300
D. 400
Correct Answer:
C
Chapter: 55
Q732:
Fill in the blank: If the signal rate is 150 bauds and each signal element carries 1 data element, the data rate is ______ bps.
A. 75
B. 150
C. 300
D. 450
Correct Answer:
B
Chapter: 55
Q733:
What is the effect of increasing the number of data elements per signal element on the data rate?
A. Increases
B. Decreases
C. Remains constant
D. Depends on the signal rate
Correct Answer:
A
Chapter: 55
Q734:
Fill in the blank: A signal rate of 50 bauds carrying 4 data elements per signal element results in a data rate of ______ bps.
A. 200
B. 100
C. 50
D. 400
Correct Answer:
A
Chapter: 56
Q735:
What does line coding convert?
A. Analog signals to digital signals
B. Sequence of bits to a digital signal
C. Text to audio
D. Digital signals to analog signals
Correct Answer:
B
Chapter: 56
Q736:
Digital data includes which of the following?
A. Text
B. Pictures
C. Audio and Video
D. All of the above
Correct Answer:
D
Chapter: 56
Q737:
Fill in the blank: Line coding is used to convert sequences of bits into _______.
A. Text
B. Analog signals
C. Digital signals
D. Audio signals
Correct Answer:
C
Chapter: 56
Q738:
Which of the following is an example of digital data?
A. A sound wave
B. A sequence of bits
C. Radio frequency
D. All of the above
Correct Answer:
B
Chapter: 56
Q739:
Fill in the blank: ______ coding is essential for transmitting digital data as digital signals.
A. Line
B. Block
C. Scrambling
D. Pulse
Correct Answer:
A
Chapter: 56
Q740:
What is the primary function of line coding in digital communication?
A. Compress data
B. Encode data into a digital signal
C. Decode digital signals
D. Amplify signals
Correct Answer:
B