Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 79
Q1041:
In ASK, which signal characteristic is constant while transmitting binary data?
A. Amplitude
B. Frequency
C. Phase
D. Data Rate
Correct Answer:
B
Chapter: 79
Q1042:
Which of the following modulations is most affected by noise?
A. Binary ASK
B. Binary PSK
C. Binary FSK
D. QAM
Correct Answer:
A
Chapter: 79
Q1043:
The on-off nature of Binary ASK can also be referred to as _______.
A. Binary Pulse Modulation
B. On-Off Keying
C. Amplitude Frequency Keying
D. Binary Data Modulation
Correct Answer:
B
Chapter: 79
Q1044:
What is a major use case of Binary ASK?
A. Radio broadcasting
B. Optical communication
C. Cellular networks
D. Audio streaming
Correct Answer:
B
Chapter: 79
Q1045:
Which type of modulation varies the amplitude of the carrier signal based on digital data?
A. Frequency Modulation
B. Amplitude Shift Keying
C. Phase Modulation
D. Quadrature Modulation
Correct Answer:
B
Chapter: 79
Q1046:
In Binary ASK, what happens to the carrier signal when the binary input is 0?
A. High amplitude
B. Low amplitude
C. Zero amplitude
D. Unchanged
Correct Answer:
C
Chapter: 80
Q1047:
In Binary ASK, what characteristic of the carrier signal changes?
A. Amplitude
B. Frequency
C. Phase
D. Data Rate
Correct Answer:
A
Chapter: 80
Q1048:
What is another name for Binary ASK?
A. Binary Phase Modulation
B. On-Off Keying
C. Frequency Modulation
D. Signal Switching
Correct Answer:
B
Chapter: 80
Q1049:
The bandwidth for a Binary ASK signal is typically determined by the _______.
A. Data Rate
B. Carrier Frequency
C. Amplitude
D. Modulation Index
Correct Answer:
A
Chapter: 80
Q1050:
What happens to the carrier signal in Binary ASK when transmitting a binary 0?
A. Amplitude is maximum
B. Amplitude is zero
C. Frequency is maximum
D. Phase is shifted
Correct Answer:
B
Chapter: 80
Q1051:
What is the key disadvantage of Binary ASK?
A. High complexity
B. Susceptibility to noise
C. High power consumption
D. Low data rate
Correct Answer:
B
Chapter: 80
Q1052:
The carrier frequency for a Binary ASK signal in a 200–300 kHz range is typically _______.
A. 200 kHz
B. 250 kHz
C. 300 kHz
D. 350 kHz
Correct Answer:
B
Chapter: 80
Q1053:
In Binary ASK, a signal with 100 kHz bandwidth and a carrier frequency of 250 kHz has a bit rate of _______.
A. 25 kbps
B. 50 kbps
C. 100 kbps
D. 200 kbps
Correct Answer:
C
Chapter: 80
Q1054:
Binary ASK is commonly used in _______.
A. Optical communication
B. Cellular networks
C. Audio broadcasting
D. Satellite communication
Correct Answer:
A
Chapter: 80
Q1055:
In Binary ASK, what remains constant when transmitting binary data?
A. Frequency and Phase
B. Amplitude and Frequency
C. Phase and Bit Rate
D. Data Rate and Amplitude
Correct Answer:
A
Chapter: 80
Q1056:
What is the role of the carrier signal in Binary ASK?
A. Transmit frequency
B. Carry amplitude variations
C. Control phase shifts
D. Enhance noise resistance
Correct Answer:
B
Chapter: 80
Q1057:
In a Binary ASK implementation, the bit rate is determined by the _______.
A. Modulation index
B. Amplitude levels
C. Carrier frequency
D. Data rate
Correct Answer:
D
Chapter: 80
Q1058:
What is the amplitude of the carrier signal in Binary ASK when the binary input is 1?
A. Maximum
B. Minimum
C. Zero
D. Negative
Correct Answer:
A
Chapter: 80
Q1059:
Fill in the blank: In Binary ASK, the _______ of the carrier signal is varied to represent binary data.
A. amplitude
B. frequency
C. phase
D. bandwidth
Correct Answer:
A
Chapter: 80
Q1060:
Which modulation technique is most affected by noise?
A. Binary ASK
B. Binary PSK
C. Binary FSK
D. Quadrature Modulation
Correct Answer:
A