Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2291: In Stop-and-Wait, after sending a frame, the sender ______.
- A: continues sending more frames without waiting
- B: halts until it receives an acknowledgment
- C: sends multiple frames at once
- D: sends a confirmation of successful delivery
View Answer
B
Q2292: The receiver in Stop-and-Wait protocol ______.
- A: sends an acknowledgment for each frame received
- B: sends an acknowledgment only when frames are complete
- C: sends no acknowledgment
- D: ignores corrupted frames
View Answer
A
Q2293: In Stop-and-Wait, the sender sends frames in which mode?
- A: Asynchronously
- B: Synchronously
- C: One at a time and waits for acknowledgment
- D: Parallel transmission
View Answer
C
Q2294: Which of the following best describes the receiver mode in Stop-and-Wait protocol?
- A: Receives and processes all frames simultaneously
- B: Waits for each frame to be acknowledged before receiving the next
- C: frame-by-frame acknowledgment is required
- D: Receives multiple frames at once
View Answer
B
Q2295: What happens if a frame is detected as corrupted in Stop-and-Wait protocol?
- A: It is automatically corrected and retransmitted
- B: It is ignored and the next frame is sent
- C: It is silently discarded and not retransmitted
- D: The receiver requests the sender to resend the frame
View Answer
C
Q2296: Which protocol requires the sender to wait for an acknowledgment before sending the next frame?
- A: Stop-and-Wait
- B: Go-Back-N
- C: Selective Repeat
- D: Simple Protocol
View Answer
A
Q2297: Fill in the blank: In Stop-and-Wait, if the sender does not receive an acknowledgment for a frame, it ______.
- A: resends the same frame immediately
- B: tries sending a new frame
- C: terminates the communication
- D: sends an error message
View Answer
A
Q2298: What happens to the sender if the receiver acknowledges a frame correctly in Stop-and-Wait?
- A: The sender sends the next frame without waiting
- B: The sender waits until all frames are acknowledged
- C: The sender can send the next frame only after receiving an acknowledgment from the receiver
- D: The sender immediately sends all the remaining frames
View Answer
C
Q2299: What is the primary role of flow control in Stop-and-Wait protocol?
- A: To ensure frames are sent at a high speed
- B: To control the rate of data transmission between sender and receiver
- C: To prevent overloading the receiver by controlling frame sizes
- D: To ensure each frame is acknowledged in order
View Answer
B
Q2300: In Stop-and-Wait protocol, which action does the sender take after receiving an acknowledgment?
- A: Waits for a timeout
- B: Resends the frame
- C: Attempts a new transmission
- D: Sends the next frame
View Answer
C