1. In a sliding window error-control system, Station A sends a packet with bytes

Question

1.In a sliding window error-control system, Station A sends a packet with bytes 501–700, followed immediately by a packet with bytes 701–900. Create a diagram of this error- control scenario, and show the response(s) that Station B will send if there are no errors.

2. In a sliding window error-control system, Station A sends a packet with bytes 501–700, followed immediately by a packet with bytes 701–900. Create a diagram of this error- control scenario, and show the response(s) that Station B will send if the second packet is lost in the network.

3 .A system is going to transmit the byte 10010100. Show the four check bits c8, c4, c2,

and c1 that will be added to this byte.

Explanation / Answer

2.

Receiver waits 500 ms for the second packet to arrive. Since it doesn’t, receiver returns an ACK with value 701.

3.

Check - bits c8, c4, c2, c1: 0 0 1 1

Transmitted 12 bit code: 1 0 0 1 0 0 1 0 0 0 1 1

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.