Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q451: If a sine wave starts at time 0 and has a phase of 45 degrees, what is its phase in radians?
- A: π4\frac{\pi}{4}4π radians
- B: π2\frac{\pi}{2}2π radians
- C: π\piπ radians
- D: π3\frac{\pi}{3}3π radians
View Answer
A
Q452: A wave that has a phase shift of 360 degrees is equivalent to _______.
- A: No phase shift
- B: A complete inversion
- C: A 180-degree shift
- D: A shift of π2\frac{\pi}{2}2π radians
View Answer
A
Q453: If the phase of a sine wave is shifted by 180 degrees, it will look _______ compared to the original wave.
- A: Inverted
- B: The same
- C: Higher amplitude
- D: Wider in width
View Answer
A
Q454: Fill in the blank: A wave with a phase of 0 degrees is said to be in _______ phase.
- A: Same
- B: Opposite
- C: Quadrature
- D: Zero
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A
Q455: Wavelength is a characteristic of a signal that _______.
- A: Defines the signal's frequency
- B: Determines the signal's propagation speed
- C: Binds the period or frequency of a sine wave to the propagation speed
- D: Indicates the strength of the signal
View Answer
C
Q456: Fill in the blank: Wavelength binds the period or frequency of a sine wave to the _______ of the medium.
- A: Propagation speed
- B: Period
- C: Amplitude
- D: Signal strength
View Answer
A
Q457: Wavelength is important for understanding how signals travel through _______.
- A: Transmission mediums
- B: Electrical circuits
- C: Antenna design
- D: Signal processing circuits
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A
Q458: The wavelength of a signal is inversely proportional to its _______.
- A: Frequency
- B: Speed
- C: Period
- D: Signal strength
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A
Q459: Fill in the blank: The relationship between wavelength and frequency can be expressed as _______.
- A: Wavelength = Speed/Frequency
- B: Wavelength = Speed × Frequency
- C: Wavelength = Speed / Frequency
- D: Wavelength = Frequency × Speed
View Answer
C
Q460: Wavelength determines the _______ of a signal traveling through a medium.
- A: Distance covered
- B: Frequency
- C: Strength
- D: Speed
View Answer
A