Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q541: The bit rate for HDTV can be reduced through _______.
- A: higher resolution
- B: compression
- C: color depth increase
- D: screen refresh rate decrease
View Answer
B
Q542: What is the average bit rate required to broadcast HDTV signals?
- A: 20 to 40 Mbps
- B: 5 to 10 Mbps
- C: 10 to 20 Mbps
- D: 50 to 100 Mbps
View Answer
A
Q543: A color pixel in HDTV is represented by _______ bits.
- A: 12 bits
- B: 16 bits
- C: 24 bits
- D: 32 bits
View Answer
C
Q544: The bit length for a digital signal is defined as _______.
- A: the frequency of the signal
- B: the time it takes for one cycle
- C: the distance one bit occupies in the medium
- D: the amplitude of the signal
View Answer
C
Q545: What factor influences the bit length of a digital signal?
- A: the signal frequency
- B: the signal bandwidth
- C: the distance one bit occupies in the medium
- D: the signal's amplitude
View Answer
C
Q546: If the screen is renewed 30 times per second, the bit rate for HDTV can be calculated by multiplying _______.
- A: the pixel count by the screen resolution
- B: the refresh rate by the pixel count
- C: the color depth by the screen refresh rate
- D: the pixel count by the color depth
View Answer
B
Q547: If a signal has a bit rate of 1000 bps, how many bits are transmitted in one second?
- A: 10 bits
- B: 100 bits
- C: 1000 bits
- D: 10000 bits
View Answer
C
Q548: In a communication channel, the bit rate affects _______.
- A: the number of samples per second
- B: the speed at which data is transferred
- C: the signal frequency
- D: the wavelength of the signal
View Answer
B
Q549: A digital signal, in the time domain, comprises _______.
- A: vertical and horizontal line segments
- B: only vertical line segments
- C: only horizontal line segments
- D: continuous sine waves
View Answer
A
Q550: Based on Fourier analysis, a digital signal is a composite _______.
- A: analog signal
- B: noise signal
- C: digital signal
- D: signal waveform
View Answer
A