Answer each of the following questions with justifications SHOW STEPS, WRITE EQUATIONS, DRAW DIAGRAMS; whatever is applicable to demonstrate understanding)

1. Assume an acknowledgment is delayed and the sender times-out occurs. Explain what will happen at each of the sender and receiver and draw a sequence diagram.

 

1. Assume we need to design a Selective-Repeat sliding-window protocol for a network in which the bandwidth is 1Gbps and the average distance between the sender and receiver is 1000 km. Assume the average packet size is 5000 bytes and the propagation speed in the media is 2 x 10^8 m/s. Find the maximum size of the send and receive windows, the number of bits in the sequence number field (m), and an appropriate time-out value for the timer.

 

1. Assume a TCP server is expecting to receive byte 6001. It receives a segment with the sequence number 6001 that carries 2000 bytes. If the server has bytes 4001 to 5000 to send, what should the reaction of the TCP server be to this event? In other words, should it delay ack or send a segment immediately and what will be the carried sequence number and acknowledge numbers?

 

1. Encode the following message in base64: 011101110100111111110000

Answer rating: 100% (QA)

Delayed Acknowledgment and Sender Timeout When an acknowledgment is delayed and the sender times out the following sequence of events occurs Sender S ... View the full answer