Arq

) before needing an ACK. If a frame is lost, the receiver discards all subsequent frames, and the sender must retransmit all frames starting from the lost one. Better utilization than Stop-and-Wait. Cons: High retransmission overhead in poor channels. 3.3. Selective Repeat ARQ (SR)

The receiver sends an ACK to confirm the successful receipt of a packet. ) before needing an ACK

If the sender does not receive an ACK within a designated time (timeout) or receives a NAK, it retransmits the packet. 3. Types of ARQ Protocols 3.1. Stop-and-Wait ARQ the receiver discards all subsequent frames

To help me make this paper more relevant to your needs, could you tell me: ) before needing an ACK

ARQ increases latency due to retransmissions, making it less suitable for real-time applications like VoIP.