What is mechanism for congestion control?

It is the policy in which retransmission of the packets are taken care of. If the sender feels that a sent packet is lost or corrupted, the packet needs to be retransmitted. This transmission may increase the congestion in the network.

Which is congestion control algorithm?

The leaky bucket algorithm enforces output patterns at the average rate, no matter how bursty the traffic is. So in order to deal with the bursty traffic, we need a flexible algorithm so that the data is not lost. One such algorithm is the token bucket algorithm.

What is the best congestion control provider?

CUBIC is the recommended, and currently most popular congestion control/avoidance algorithm, it is the default in Linux since kernel 2.6. 19. CTCP is ok to use with Windows. BBR is a great new algorithm that is gaining popularity, it is available in Linux since kernel 4.9, not yet available with Windows.

What is meant by congestion list the ways of avoiding congestion?

Networks use congestion control and congestion avoidance techniques to try to avoid collapse. These include: exponential backoff in protocols such as CSMA/CA in 802.11 and the similar CSMA/CD in the original Ethernet, window reduction in TCP, and fair queueing in devices such as routers and network switches.

Why do we need congestion control?

Under a congestion situation, the queue length may become very large in a short time, resulting in buffer overflow and cell loss. So congestion control is necessary to ensure that users get the negociated QoS. Congestion is caused by the shortage of buffer space.

What are the differences between flow control and congestion control and which layers are responsible for implementing it?

In Flow Control, Traffic is controlled and Traffic represents flow from sender to receiver. In Congestion Control also, Traffic is controlled and Traffic represents flow entering into the network. Data link and Transport layers handles flow control. Network and Transport layers handles congestion control.

How are congestion control and QOS related?

The main focus of congestion control and quality of service is data traffic. In congestion control we try to avoid traffic congestion. In quality of service, we try to create an appropriate environment for the traffic.