Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3071: Which of the following layers corresponds to the transport of data between devices over a physical medium?
- A: Photonic Layer
- B: Line Layer
- C: Path Layer
- D: Section Layer
View Answer
B
Q3072: The SONET framework is designed to carry _______ over a wide-area network (WAN).
- A: High-speed data
- B: Video signals
- C: Control signals
- D: Low-speed data
View Answer
A
Q3073: What does the SONET Frame structure consist of for organizing data?
- A: Sections and headers
- B: Frames and cells
- C: Cells and bits
- D: Bytes and packets
View Answer
A
Q3074: Which of the following is true about the SONET device-layer relationship?
- A: Devices interact with the frame structure and functional layers
- B: Devices are only responsible for data reception
- C: Devices are independent of the SONET layers
- D: Devices provide encryption for data transmission
View Answer
A
Q3075: What is the primary function of the SONET Photonic Layer?
- A: It manages network devices
- B: It handles data transmission over optical fibers
- C: It handles data transmission across copper cables
- D: It provides error detection for the network
View Answer
B
Q3076: Fill in the blank: The SONET frame structure includes _______ for synchronization between devices.
- A: Timestamp headers
- B: Control bits
- C: Frame delimiters
- D: Transport blocks
View Answer
C
Q3077: Which layer in SONET is primarily responsible for error correction and monitoring?
- A: Section Layer
- B: Line Layer
- C: Path Layer
- D: Photonic Layer
View Answer
A
Q3078: What does the SONET Section Layer monitor?
- A: Transmission signals across a network path
- B: The path of data flow between devices
- C: The physical layer of the network
- D: The end-to-end communication link
View Answer
A
Q3079: Which of the following layers is responsible for data transmission across the physical fiber-optic network?
- A: Photonic Layer
- B: Section Layer
- C: Path Layer
- D: Line Layer
View Answer
A
Q3080: What does each synchronous transport signal (STS-n) consist of?
- A: Frames with 9 rows and 90 columns
- B: Frames with 9 rows and 270 columns
- C: Frames with 9 rows and 90×n columns
- D: Frames with 8 rows and 100 columns
View Answer
C