In a network using the Go-Back-N protocol with m = 3 and the sending window of size 7, the values are Sf = 42, Sn = 46, and Rn = 44. Assume that the network does not duplicate or reorder the packets. (i) What are the sequence numbers of data packets is transit? (ii) what are the acknowledgment numbers of data packets in transit?

In a network using the Go-Back-N protocol with m = 3 and the sending window of size 7, the values are Sf = 42, Sn = 46, and Rn = 44. Assume that the network does not duplicate or reorder the packets. (i) What are the sequence numbers of data packets is transit? (ii) what are the acknowledgment numbers of data packets in transit?

Principles of Information Security (MindTap Course List)

6th Edition

ISBN:9781337102063

Author:Michael E. Whitman, Herbert J. Mattord

Publisher:Michael E. Whitman, Herbert J. Mattord

Chapter6: Security Technology: Access Controls, Firewalls, And Vpns

Section: Chapter Questions

Problem 2RQ

See similar textbooks

Similar questions

Consider the GBN protocol with a sender window size of 4 and a sequence number rangeof 1,024. Suppose that at time t, the next in-order packet that the receiver is expecting has asequence number of k. Assume that the medium does not reorder messages. Answer thefollowing questions: What are all possible values of the ACK field in all possible messages currently propagating back to the sender at time t? Justify your answer.
The sender side of rdt3.0 simply ignores (that is, takes no action on) all received packets that are either in error or have the wrong value in the acknum field of an acknowledgment packet. Suppose that in such circumstances, rdt3.0 were simply to retransmit the current data packet. Would the protocol still work?
Consider the GBN protocol with a sender window size of 4 and a sequence number rangeof 1,024. Suppose that at time t, the next in-order packet that the receiver is expecting has asequence number of k. Assume that the medium does not reorder messages. Answer thefollowing questions: What are the possible sets of sequence numbers inside the sender’s window at time t? Justify your answer.
14.Which one is true for Go-Back-N protocol ? In case of errors, receiver sends negative acknowledgement for the packet with error. There is no buffer area in the receiver The packets reach to the receiver without any errors. The packets are received in the order that they send
Consider the following 4-message protocol: A → S: (B, {(A, K1)}KpbS) S → B: A B → S: (A, {(B, K2)}KpbS) S → A: (B, {K2}K1) Which of the following statements is true, at the end of the protocol, and with regards to the purpose of the protocol: a) Both A and B establish a session key K2, and B is sure of A’s identity b) Both A and B establish a session key K1, and B is sure of A’s identity c) Both A and B establish a session key K1, and A is sure of B’s identity d) Both A and B establish a session key K1, and both B and A are sure of each other’s identity e) Both A and B establish a session key K2, and A is sure of B’s identity f) Both A and B establish a session key K1 g) Both A and B establish a session key K2 h) Both A and B authenticate each other by knowing each other’s identities i) A ends up knowing B’s identity j) B ends up knowing A’s identity k) None of the above l) All of the above
It is possible for a series of packets to be sent from one host to another utilizing the same route between the hosts. Please break down the time it takes for a single package to go from beginning to conclusion. Is it expected that one of the delays would last for a certain period of time, while the other delay's length remains open?
Assume a sender sends 5 packets: 0, 1, 2, 3, and 4. The sender receives anACK with ackNo = 3. What is the interpretation if the system is using “Go-Back-N Protocol” or “Selective Repeat”? a. Go-Back-N Protocol b. Selective Repeat
It is possible for a series of packets to be sent from one host to another over the same connection. Please break down the time it takes for a single package to go from beginning to conclusion. Is it expected that one of the delays would last a certain period of time while the other delay's length will be more malleable?
Let's pretend that at the network layer, one computer sends a packet to another computer on the Internet. There was a problem with the packet's logical destination address. How do I forward the package? In what way will the situation be relayed to the original computer?
Multiple packets may be sent between two hosts over a single connection. Could you please break down the timings for processing cargo? Is it to be anticipated that one delay would continue for a certain length of time while the other delay could be modified?
Suppose the sender knows about and accepts a constant roundtrip delay in communication. Given that there's still a chance of packet loss in protocol rdt 3.0, is a timer still necessary? Explain.
Let's pretend the sender is aware of, and prepared for, a continuous roundtrip delay between their end and the receiver's. Would a timer still be useful in protocol rdt 3.0, given the possibility of packet loss? Explain.