Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1091: Fill in the blank: In FSK, the _______ of the carrier signal changes for each data element.
- A: amplitude
- B: phase
- C: frequency
- D: bit rate
View Answer
C
Q1092: What is the bandwidth requirement for FSK when d = 1 and Δf = 10 kHz?
- A: 10 kHz
- B: 40 kHz
- C: 20 kHz
- D: 60 kHz
View Answer
C
Q1093: Binary FSK is also referred to as _______.
- A: On-Off Keying
- B: Continuous Wave Modulation
- C: Two-level FSK
- D: Quadrature Modulation
View Answer
C
Q1094: In Binary FSK, if Δf = 20 kHz and bit rate = 10 kbps, what is the total bandwidth?
- A: 10 kHz
- B: 60 kHz
- C: 40 kHz
- D: 80 kHz
View Answer
B
Q1095: The frequency deviation (Δf) in FSK is defined as the _______.
- A: Difference between two carrier frequencies
- B: Average of two frequencies
- C: Peak frequency divided by time
- D: Frequency multiplied by bandwidth
View Answer
A
Q1096: Fill in the blank: FSK can be classified as _______ modulation.
- A: Analog
- B: Amplitude
- C: Phase
- D: Digital
View Answer
D
Q1097: If the bit rate is 5 kbps and Δf = 10 kHz, what is the minimum required bandwidth for Binary FSK?
- A: 20 kHz
- B: 30 kHz
- C: 25 kHz
- D: 40 kHz
View Answer
B
Q1098: Which of the following remains constant in FSK modulation?
- A: Carrier amplitude
- B: Carrier frequency
- C: Bit rate
- D: Data element
View Answer
A
Q1099: Fill in the blank: Binary FSK uses two distinct carrier frequencies to represent _______.
- A: bit rate
- B: amplitude modulation
- C: phase shifts
- D: binary data
View Answer
D
Q1100: What happens to the carrier frequency in FSK when the binary data changes?
- A: It remains constant
- B: It increases
- C: It decreases
- D: It alternates between two values
View Answer
D