3.4-10 Pipelining. Which of the following statements about pipelining are true?  One or more statements may be true.Group of answer choicesA pipelined sender can have transmitted multiple packets for which the sender has yet to receive an ACK from the receiver. With pipelining, a receiver will have to send fewer acknowledgments as the degree of pipelining increasesWith pipelining, a packet is only retransmitted if that packet, or its ACK, has been lost.With a pipelined sender, there may be transmitted packets “in flight” – propagating through the channel – packets that the sender has sent but that the receiver has not yet received.

The statements about pipelining that are true are:

1. A pipelined sender can have transmitted multiple packets for which the sender has yet to receive an ACK from the receiver. This is because in pipelining, multiple packets are sent out before waiting for acknowledgments.

2. With pipelining, a packet is only retransmitted if that packet, or its ACK, has been lost. This is a fundamental principle of pipelining, where retransmission is only done when necessary.

3. With a pipelined sender, there may be transmitted packets “in flight” – propagating through the channel – packets that the sender has sent but that the receiver has not yet received. This is a characteristic of pipelining, where packets are continuously sent without waiting for acknowledgments.

The statement that is not necessarily true is:

1. With pipelining, a receiver will have to send fewer acknowledgments as the degree of pipelining increases. This is not necessarily true because the number of acknowledgments depends on the protocol used. Some protocols require an acknowledgment for each packet, while others may allow for cumulative acknowledgments.