What is Stop and wait ARQ?

Answer 1

Stop and Wait ARQ (Automatic Repeat reQuest) is a simple error control protocol used in data communication. In this method, the sender transmits a single data packet and then waits for an acknowledgment (ACK) from the receiver before sending the next packet. If the sender does not receive an ACK within a specified timeout period, it retransmits the same packet. This approach ensures reliable transmission but can be inefficient due to idle waiting times, especially in high-latency networks.