Suppose that the roundtrip delay between sender and receiver is constant and known to the sender. Would a timer still be necessary in protocol rdt 3.0 , assuming that packets can be lost? Explain.

Protocol 6's frame arrival code includes a part for NAKs.If the incoming frame is a NAK and another condition is satisfied, this section is called.Give an example of a situation in which the existence of this other condition is critical.

The following questions are true or false, and you should explain your answer to them in a few words: In this case, the alternating-bit protocol is the same as the SR protocol if both the sender and receiver window sizes are 1.

The sender is aware of a constant round-trip delay between themselves and the recipient. Is a timer still needed in protocol rdt 3.0 considering the risk for packet loss? Explain.

Assume that there is a constant roundtrip delay between the sender and the recipient, and that the sender is aware of this delay. Is the use of a timer in protocol rdt 3.0 still required, given the possibility of packet loss? Explain.

Assume a constant round-trip delay between the sender and receiver, and that the sender is aware of this delay before starting. Due to the probability of packet loss, is a timer still necessary in protocol rdt 3.0? Explain.

Assume that the sender and receiver both have a constant roundtrip delay, which the sender is aware of. Is a timer still required in protocol rdt 3.0, given the possibility of packet loss? Explain.

Draw a space-time diagram similar to Figure 3.22 of textbook for the following problem: Sender is sending 10 packets to receiver. Stop after 7 packets are accepted by receiver. Protocol Used: Go-Back-N Sliding Window size = 6 Timeout interval =1RTT Assume transmission time of a packet = 1/4 RTT Assume Packet 1 is lost, then ACK 2 is lost, and then ACK 6 is lost Note: The sender starts a timer when base = nextseqnum, i.e. at beginning of your example. Then when an ACK is received, if base is not nextseqnum, the timer is started.

Do Selective Repeat Protocols only retransmit packets that were lost or corrupted at the receiver?

Assume that there is a consistent roundtrip delay between the sender and the receiver, and that the sender is aware of the delay. Is the inclusion of a timer in protocol RDT 3.0 still required, considering the possibility of packet loss? Explain.