In this question you are to compare the GBN, SR, and TCP protocols as approaches toward pipelined error recovery for reliable data transfer. Consider three one-byte packets are sent from a client to the server with sequence numbers 1, 2, and 3. Also, a connection is established prior to sending the first packet and there are no timers.

Consider the case where the first packet arrives successfully but the second is lost in transit. If the third packet arrives successfully, what is the sequence number in the corresponding acknowledgment sent by the server if using:

• GBN? [ Select ] ["1", "2", "3", "4"]
• SR? [ Select ] ["1", "2", "3", "4"]
• TCP? [ Select ] ["1", "2", "3", "4"]

  In this question you are to compare the GBN, SR, and TCP protocols as approaches toward pipelined error recovery for reliable data transfer. Consider three one-byte packets are sent from a client to the server with sequence numbers 1, 2, and 3. Also, a connection is established prior to sending the first packet and there are no timers.

  If the first packet arrives successfully, what is the sequence number in the corresponding acknowledgment sent by the server if using:

• GBN? [ Select ] ["1", "2", "3", "4"]
• SR? [ Select ] ["1", "2", "3", "4"]
• TCP? [ Select ] ["1", "2", "3", "4"]