Q1: 1. What is the purpose of using the sliding window protocol in computer networks?

• A) To ensure data integrity
• B) To control flow of data
• C) To provide security
• D) To encrypt data

Q2: 2. In a sliding window protocol, what does the window size determine?

• A) Speed of data transmission
• B) Number of bits in a frame
• C) Maximum number of frames sent without acknowledgement
• D) Encryption strength

Q3: 3. Which of the following scenarios best illustrates the need for using the sliding window protocol?

• A) A user sending a large file over an unreliable network connection
• B) A server hosting a website with low traffic
• C) A computer connected to a secure local network
• D) A printer receiving print commands from multiple users

Q4: 4. What happens if a frame is lost or corrupted in the sliding window protocol?

• A) The receiver sends a negative acknowledgment
• B) The sender retransmits the frame
• C) The connection is terminated
• D) The frame is ignored

Q5: 5. Which parameter is used to avoid congestion in the sliding window protocol?

• A) Timeout value
• B) Window size
• C) Sequence number
• D) Checksum

Q6: 6. When does a sender stop transmitting frames in the sliding window protocol?

• A) When the window size is reached
• B) When all frames are acknowledged
• C) When an error occurs
• D) When the receiver is offline

Q7: 7. Which of the following best describes the concept of selective repeat in sliding window protocol?

• A) Retransmitting all frames on timeout
• B) Retransmitting only the corrupted frames
• C) Sending frames in order without acknowledgement
• D) Sending frames concurrently without acknowledgement

Q8: 8. What is the advantage of using the sliding window protocol over stop-and-wait protocol?

• A) Faster data transmission
• B) Higher security
• C) Lower bandwidth usage
• D) Simplicity of implementation

Q9: 9. In a sliding window protocol, what role does the acknowledgment play?

• A) Confirms successful data transmission
• B) Encrypts the data
• C) Controls the flow of data
• D) Sets the window size

Q10: 10. Which mechanism is used to handle out-of-order frames in the sliding window protocol?

• A) Sequence numbers
• B) Checksum
• C) Timeout value
• D) Encryption

Q11: 11. A real-life scenario where sliding window protocol is beneficial is

• A) Uploading a large video file to a cloud storage service
• B) Sending a short email with text only
• C) Accessing a website with static content
• D) Printing a single-page document

Q12: 12. What is the purpose of using acknowledgments in the sliding window protocol?

• A) To confirm the successful receipt of data
• B) To encrypt the data
• C) To compress the data
• D) To control the flow of data

Q13: 13. In a sliding window protocol, what does the sender do upon receiving a negative acknowledgment (NAK)?

• A) Waits for a timeout and then resends the frame
• B) Ignores the NAK and continues sending frames
• C) Terminates the connection
• D) Sends an acknowledgment back to the receiver

Q14: 14. Which factor determines the efficiency of the sliding window protocol?

• A) Window size
• B) Encryption strength
• C) Number of bits in a frame
• D) Timeout value

Q15: 15. What is the significance of the timeout value in the sliding window protocol?

• A) Determines the speed of data transmission
• B) Sets the maximum number of frames to be sent
• C) Handles retransmission of lost frames
• D) Encrypts the data

Q16: 16. A situation where sliding window protocol helps in improving network performance is

• A) Streaming audio over a stable connection
• B) Sending a small text message
• C) Accessing a website with heavy graphics
• D) Transferring a large database file

Q17: 17. What does the term "sliding window" refer to in the sliding window protocol?

• A) The size of the data frame
• B) The range of sequence numbers allowed for transmission
• C) The encryption algorithm used
• D) The network bandwidth

Q18: 18. How does the sliding window protocol help in reducing network congestion?

• A) By controlling the flow of data
• B) By increasing the window size
• C) By encrypting the data
• D) By compressing the data

Q19: 19. Which component ensures data integrity in the sliding window protocol?

• A) Checksum
• B) Timeout value
• C) Acknowledgment
• D) Encryption

Q20: 20. When does the receiver send an acknowledgment in the sliding window protocol?

• A) After receiving each frame
• B) After receiving the entire data stream
• C) After a timeout period
• D) After an error occurs

Q21: 21. A scenario where the sliding window protocol is essential is

• A) Browsing a text-based website
• B) Downloading a small image file
• C) Video conferencing in real-time
• D) Sending a single-page document for printing

Q22: 22. What is the purpose of using sequence numbers in the sliding window protocol?

• A) Ensures data encryption
• B) Tracks the order of frames
• C) Controls network bandwidth
• D) Sets the window size

Q23: 23. How does the sliding window protocol handle data retransmission?

• A) By resending all frames
• B) By resending only the lost frames
• C) By terminating the connection
• D) By reducing the window size

Q24: 24. Which factor influences the throughput of the sliding window protocol?

• A) Window size
• B) Encryption strength
• C) Timeout value
• D) Checksum method

Q25: 25. A practical example where sliding window protocol is beneficial is

• A) Sending a short tweet on social media
• B) Uploading multiple documents simultaneously
• C) Accessing a simple webpage
• D) Printing a text document