Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 38
Q501:
The spectrum of a composite signal shows the _______ components of the signal.
A. Frequency
B. Time
C. Amplitude
D. Phase
Correct Answer:
A
Chapter: 38
Q502:
Fill in the blank: A digital signal can have _______ levels.
A. More than two
B. Exactly two
C. Three
D. Unlimited
Correct Answer:
A
Chapter: 38
Q503:
A digital signal uses _______ voltage for encoding a 1 and _______ voltage for encoding a 0.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. Zero, negative
Correct Answer:
A
Chapter: 38
Q504:
The bandwidth of a signal is measured in _______.
A. Hertz
B. Amplitude
C. Time
D. Voltage
Correct Answer:
A
Chapter: 38
Q505:
A digital signal can represent information using _______ voltage levels.
A. More than two
B. Exactly two
C. Only zero
D. Only positive
Correct Answer:
A
Chapter: 38
Q506:
Fill in the blank: If a signal has frequencies of 100, 300, 500, 700, and 900 Hz, the bandwidth of the signal is _______ Hz.
A. 800
B. 700
C. 100
D. 900
Correct Answer:
A
Chapter: 38
Q507:
In digital signals, a 1 can be encoded as a _______ voltage and a 0 as _______ voltage.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. High, low
Correct Answer:
A
Chapter: 38
Q508:
The decomposition of a composite signal into its frequency components helps to determine the _______ of the signal.
A. Bandwidth
B. Amplitude
C. Frequency shift
D. Phase shift
Correct Answer:
A
Chapter: 38
Q509:
A digital signal is different from an analog signal because it uses _______ to represent data.
A. Discrete voltage levels
B. Continuous voltage levels
C. Infinite voltage levels
D. Analog voltage levels
Correct Answer:
A
Chapter: 39
Q510:
A digital signal can have _______ voltage levels.
A. More than two
B. Exactly two
C. Three
D. Unlimited
Correct Answer:
A
Chapter: 39
Q511:
Information in a digital signal can be encoded using _______ and _______ voltages.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. High, low
Correct Answer:
A
Chapter: 39
Q512:
A digital signal can represent a 1 using _______ voltage and a 0 using _______ voltage.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. High, low
Correct Answer:
A
Chapter: 39
Q513:
Fill in the blank: A digital signal can have more than _______ levels, enabling the transmission of more than one bit per level.
A. Two
B. Three
C. One
D. Four
Correct Answer:
A
Chapter: 39
Q514:
Information can be represented in a digital signal by encoding a 1 as _______ and a 0 as _______ voltage.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. High, low
Correct Answer:
A
Chapter: 39
Q515:
A digital signal’s representation of information can involve more than two levels to send _______ per level.
A. One bit
B. Two bits
C. Three bits
D. Multiple bits
Correct Answer:
D
Chapter: 39
Q516:
The encoding of a digital signal's information can be achieved using _______ levels of voltage.
A. Discrete
B. Continuous
C. Infinite
D. Analog
Correct Answer:
A
Chapter: 39
Q517:
Digital signals allow the transmission of multiple bits using _______ voltage levels.
A. More than two
B. Exactly two
C. Only one
D. Unlimited
Correct Answer:
A
Chapter: 39
Q518:
A digital signal is typically used in applications where information is encoded by using _______ voltage levels.
A. Discrete
B. Continuous
C. Infinite
D. Analog
Correct Answer:
A
Chapter: 39
Q519:
Fill in the blank: A 1 in a digital signal can be encoded as a _______ voltage, and a 0 can be encoded as a _______ voltage.
A. Positive, zero
B. Negative, positive
C. Zero, positive
D. High, low
Correct Answer:
A
Chapter: 39
Q520:
In digital signal representation, more than two voltage levels allow the transmission of _______ per level.
A. More than one bit
B. One bit
C. No bits
D. Two bits
Correct Answer:
A