Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1201: What is the primary purpose of Frequency Modulation (FM)?
- A: Increase bandwidth
- B: Reduce noise and interference
- C: Improve digital transmission
- D: Compress data
View Answer
B
Q1202: What is the primary advantage of Phase Modulation (PM) over Amplitude Modulation (AM)?
- A: More bandwidth-efficient
- B: Less susceptible to noise
- C: Easier to demodulate
- D: Used for digital signals
View Answer
B
Q1203: Which modulation technique is commonly used in radio broadcasting?
- A: Amplitude Modulation (AM)
- B: Phase Modulation (PM)
- C: Pulse Code Modulation (PCM)
- D: Frequency Modulation (FM)
View Answer
D
Q1204: A system that converts analog signals into digital signals is called _______.
- A: Modulator
- B: Demodulator
- C: Encoder
- D: Converter
View Answer
C
Q1205: What is the process of simultaneous transmission of multiple signals across a single data link called?
- A: Multiplexing
- B: Modulation
- C: Demodulation
- D: Encoding
View Answer
A
Q1206: As data and telecommunication use increases, what also increases?
- A: Storage capacity
- B: Network traffic
- C: Power consumption
- D: Processing speed
View Answer
B
Q1207: What is one approach to handling increased network traffic?
- A: Adding individual links for new channels
- B: Reducing the number of users
- C: Using lower bandwidth connections
- D: Disabling multiple connections
View Answer
A
Q1208: What is another method to handle high traffic without adding individual links?
- A: Install higher bandwidth links
- B: Reduce the number of signals
- C: Increase transmission delay
- D: Use separate networks for each signal
View Answer
A
Q1209: What is a major advantage of installing higher bandwidth links?
- A: Can carry multiple signals
- B: Reduces signal interference
- C: Eliminates the need for routing
- D: Converts analog signals to digital
View Answer
A
Q1210: Multiplexing is primarily used to _______.
- A: Enhance security
- B: Increase signal speed
- C: Optimize bandwidth usage
- D: Store data efficiently
View Answer
C