It is the most fundamental flow control strategy. Read through this article to find out more about these two protocols and how they are different from each other. In this protocol, the sender sends multiple frames at a time and retransmits the frames which are found to be corrupted or damaged. Stop and Wait protocol is also a protocol for flow control mechanism. Once acknowledged, the sender sends another frame to the receiver. In this protocol, the sender sends one frame at a time and waits for acknowledgment from the receiver. Stop and Wait protocol is a protocol for flow control mechanism.