Go-Back-N ARQ Quiz

What is the main focus of today's session?

• Understanding the sliding window protocol

• Understanding traditional stop-and-wait protocol

• Understanding the go-back-n ARQ

• Understanding selective-repeat ARQ

In the go-back-n ARQ, what does 'n' represent?

• Acknowledgment number

• Sender window size

• Receiver window size

• Total number of frames

How many frames can be sent in go-back-n ARQ if n is 3?

• 4 frames

• 3 frames

• 2 frames

• 1 frame

What happens if an acknowledgment is not received in time?

• Only the last frame is retransmitted

• The sender stops sending frames

• All frames in the current window are retransmitted

• No frames are retransmitted

What is the sequence number range if the sending window size is 4?

• 0 to 4

• 1 to 3

• 0 to 3

• 1 to 4

What is the significance of the sender window size in go-back-n ARQ?

• It determines the total number of frames

• It has no significance

• It determines the number of bits in the acknowledgment

• It determines the number of frames that can be sent

If the sending window size is 2, what will be the sequence numbers?

• 1, 2

• 0, 1, 2

• 0, 1, 2, 3

• 0, 1

In go-back-n ARQ, how are frames numbered?

• By priority

• In reverse order

• Sequentially

• Randomly

What does the sender do after receiving an acknowledgment for frame 0?

• Retransmit frame 0

• Send the next frame in the buffer

• Wait for more acknowledgments

• Stop sending frames

What happens to frames that are already sent but not acknowledged?

• They are retransmitted if needed

• They are sent again without acknowledgment

• They are stored indefinitely

• They are discarded