PPT Slide
???? A sliding window protocol with window size N has utilization N-times that of a stop-and-wait protocol.
?????A short link has a high ? (tprop/ttrans) and therefore, even a stop-and-wait flow control would be efficient on it: there is no need for complexity of larger windows.
?????Go-back-N ARQ trades off a small loss in performance for simplicity, increased reliability and better use of sequence number space when compared to Selective-reject ARQ.
????SLIP provides framing, protocol multiplexing, and error detection capabilities.