Arq ⭐ Exclusive

Only the specific lost or corrupted frame is retransmitted, rather than the entire window. Pros: Highly efficient utilization of bandwidth.

The choice of ARQ protocol involves trade-offs between complexity and efficiency: Only the specific lost or corrupted frame is

SR provides the best throughput in high-error rate scenarios. Only the specific lost or corrupted frame is

Low throughput on links with high propagation delay, as the channel remains idle while waiting for ACKs. 3.2. Go-Back-N ARQ (GBN) Only the specific lost or corrupted frame is