Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 35
Q461:
The wavelength of a sine wave traveling through a medium is determined by _______.
A. The speed of the wave and its frequency
B. The amplitude of the wave and its frequency
C. The phase and frequency of the wave
D. The duration of the signal
Correct Answer:
A
Chapter: 35
Q462:
The wavelength of a signal in a transmission medium depends on _______.
A. The propagation speed and frequency
B. The amplitude and power
C. The type of signal and frequency
D. The signal's period and strength
Correct Answer:
A
Chapter: 35
Q463:
Fill in the blank: A higher frequency results in a _______ wavelength.
A. Shorter
B. Longer
C. Constant
D. Irregular
Correct Answer:
A
Chapter: 35
Q464:
Wavelength is a key factor in understanding _______ in communication systems.
A. Signal propagation
B. Signal distortion
C. Signal amplification
D. Signal filtering
Correct Answer:
A
Chapter: 35
Q465:
The speed of a signal is determined by the _______ of the transmission medium.
A. Wavelength
B. Frequency
C. Propagation speed
D. Period
Correct Answer:
C
Chapter: 35
Q466:
Fill in the blank: The wavelength of a signal traveling through a medium can be calculated by _______.
A. Wavelength = Propagation Speed / Frequency
B. Wavelength = Frequency / Propagation Speed
C. Wavelength = Speed / Frequency
D. Wavelength = Amplitude / Period
Correct Answer:
C
Chapter: 35
Q467:
The relationship between wavelength, frequency, and propagation speed is most relevant in _______.
A. Communications and signal processing systems
B. Power distribution systems
C. Electric circuits and resistance
D. Sound amplification systems
Correct Answer:
A
Chapter: 36
Q468:
A sine wave is comprehensively defined by its _______.
A. Amplitude, frequency, and phase
B. Frequency and amplitude only
C. Amplitude and phase only
D. Frequency and phase only
Correct Answer:
A
Chapter: 36
Q469:
The time-domain plot shows changes in signal amplitude with respect to _______.
A. Frequency
B. Time
C. Phase
D. Speed
Correct Answer:
B
Chapter: 36
Q470:
A frequency-domain plot is more useful when dealing with _______.
A. Multiple sine waves
B. A single sine wave
C. Time-domain analysis
D. High-frequency signals
Correct Answer:
A
Chapter: 36
Q471:
Fill in the blank: The frequency-domain plot shows multiple sine waves as _______.
A. Spikes
B. Curves
C. Sinusoids
D. Squares
Correct Answer:
A
Chapter: 36
Q472:
A time-domain plot is most useful for _______.
A. Showing changes in signal amplitude over time
B. Showing multiple sine waves at once
C. Identifying the phase of signals
D. Analyzing frequency differences
Correct Answer:
A
Chapter: 36
Q473:
Composite signals are made by combining _______.
A. Multiple sine waves
B. Multiple square waves
C. Single sine waves
D. A combination of analog and digital signals
Correct Answer:
A
Chapter: 36
Q474:
Fill in the blank: A power company uses a _______ sine wave with a frequency of 60 Hz to distribute electric energy.
A. Simple
B. Composite
C. Complex
D. Digital
Correct Answer:
A
Chapter: 36
Q475:
Which of the following is NOT true about a time-domain plot?
A. It shows the amplitude of a signal with respect to time.
B. It is most useful for representing multiple sine waves.
C. It does not explicitly show phase.
D. It is a plot of amplitude versus time.
Correct Answer:
B
Chapter: 36
Q476:
Fill in the blank: In a frequency-domain plot, the sine wave with the highest amplitude will appear as the _______.
A. Tallest spike
B. Widest spike
C. Shortest spike
D. Farthest spike
Correct Answer:
A
Chapter: 36
Q477:
A composite signal is created by adding together multiple _______.
A. Simple sine waves
B. Complex signals
C. Digital signals
D. Analog waves
Correct Answer:
A
Chapter: 36
Q478:
The time-domain plot of a sine wave represents the variation of _______ over time.
A. Frequency
B. Phase
C. Amplitude
D. Speed
Correct Answer:
C
Chapter: 36
Q479:
The frequency-domain plot is best used when _______ is of interest.
A. Representing many sine waves simultaneously
B. Analyzing a single sine wave
C. Displaying phase shifts
D. Observing amplitude changes
Correct Answer:
A
Chapter: 36
Q480:
The frequency of a sine wave can be measured by observing the _______ in the time-domain plot.
A. Time it takes to complete one cycle
B. Amplitude of the wave
C. Phase of the wave
D. Frequency shift
Correct Answer:
A