Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q751: Which of the following is a category of line coding schemes?
- A: Unipolar
- B: Polar
- C: Both A and B
- D: None of the above
View Answer
C
Q752: Fill in the blank: Line coding schemes include ______ and polar schemes.
- A: Unipolar
- B: Bipolar
- C: Multilevel
- D: None of the above
View Answer
A
Q753: What is a characteristic of polar line coding?
- A: Uses only positive voltages
- B: Uses both positive and negative voltages
- C: Uses alternating voltages
- D: Uses no voltage levels
View Answer
B
Q754: Fill in the blank: ______ line coding uses both positive and negative voltages.
- A: Unipolar
- B: Polar
- C: Bipolar
- D: Multilevel
View Answer
B
Q755: What type of line coding uses a single voltage level to represent data?
- A: Polar
- B: Unipolar
- C: Bipolar
- D: Multilevel
View Answer
B
Q756: Fill in the blank: Unipolar coding schemes are ______ in terms of power usage compared to polar coding.
- A: Less efficient
- B: More efficient
- C: Equally efficient
- D: Not related to efficiency
View Answer
A
Q757: What is a disadvantage of unipolar line coding?
- A: Higher signal strength
- B: Lack of synchronization
- C: Efficient power usage
- D: No voltage representation
View Answer
B
Q758: Fill in the blank: ______ line coding schemes use voltage levels to represent both binary 0 and binary 1.
- A: Polar
- B: Unipolar
- C: Multilevel
- D: None of the above
View Answer
A
Q759: What is the primary use of unipolar line coding schemes?
- A: High-speed data transmission
- B: Short-distance communication
- C: Long-distance communication
- D: Video transmission
View Answer
B
Q760: Fill in the blank: A major limitation of ______ coding is the need for a DC component.
- A: Polar
- B: Unipolar
- C: Multilevel
- D: All of the above
View Answer
B