q explain about congestion controlcongestion

Question

Q. Explain about Congestion control?

Congestion control

Open-loop congestion control

- prevent congestion before it happens

• retransmission policy

- Retransmission timers should optimize efficiency & prevent congestion

• window policy

- Selective Repeat window is superior than Go-back-N

• acknowledgement policy

- if not each packet is ACKed the sender may slow down

• discarding policy