Problemanswer the following questions related to the fsms, Ask an Expert

Problem

Answer the following questions related to the FSM's for the Go-back-N protocol with m = 6 (Figure 13.26):

a. The sending machine is in the ready state with S_f = 10 and S_n = 15. What is the sequence number of the next packet to send?

b. The sending machine is in the ready state with S_f = 10 and S_n = 15. A time-out occurs. How many packets are to be resent? What are their sequence numbers?

c. The sending machine is in the ready state with S_f = 10 and S_n = 15. An ACK with ackNo = 13 arrives. What are the next values of S_f and S_n?

d. The sending machine is in the blocking state with S_f = 14 and S_n = 21. What is the size of the window?

e. The sending machine is in the blocking state with S_f = 14 and S_n = 21. An ACK with ackNo = 18 arrives. What are the next values of S_f and S_n? What is the state of the sending machine?

f. The receiving machine is in the ready state with R_n = 16. A packet with sequence number 16 arrives. What is the next value of R_n? What is the response of the machine to this event?

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Computer Network & Security, Computer Science

Category:- Computer Network & Security
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