Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1401: The physical layer directly controls which of the following?
- A: Application layer
- B: Transmission media
- C: Session layer
- D: Presentation layer
View Answer
B
Q1402: Which of the following is used to transmit data using light signals?
- A: Twisted pair
- B: Coaxial cable
- C: Optical fiber
- D: Free space
View Answer
C
Q1403: The OSI layer responsible for physical signal transmission is the ______.
- A: Session layer
- B: Presentation layer
- C: Physical layer
- D: Data link layer
View Answer
C
Q1404: Which media uses electromagnetic waves to transmit data through air?
- A: Optical fiber
- B: Coaxial cable
- C: Twisted pair
- D: Free space
View Answer
D
Q1405: Which of the following is an example of free space transmission media?
- A: Twisted pair
- B: Fiber optic
- C: Air
- D: Coaxial cable
View Answer
C
Q1406: Which one of the following belongs to layer zero of the network model?
- A: Physical devices
- B: Transmission media
- C: Transport layer
- D: Network layer
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B
Q1407: In which medium does data travel as electrical signals?
- A: Optical fiber
- B: Twisted pair
- C: Free space
- D: Infrared
View Answer
B
Q1408: What kind of signals are used in optical fiber cables?
- A: Electrical signals
- B: RF signals
- C: Light signals
- D: Sound signals
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C
Q1409: What differentiates optical fiber from metallic media?
- A: It carries electricity
- B: It uses magnetic pulses
- C: It uses light to transmit data
- D: It requires grounding
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C
Q1410: Fill in the blank: ______ and coaxial cables are examples of metallic media.
- A: Twisted pair
- B: Optical fiber
- C: Fiber optics
- D: Microwave
View Answer
A