Arq | Deluxe · CHECKLIST |

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

The sender can transmit multiple frames (within a window size The receiver sends an ACK to confirm the

) 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 discards all subsequent frames

SR provides the best throughput in high-error rate scenarios. The receiver sends an ACK to confirm the