A network link (1km long with propagation rate of 2.5 *10^8 m/sec) utilizes stop-and-wait (Idle RQ)...

Transcribed Image Text:

A network link (1km long with propagation rate of 2.5 *10^8 m/sec) utilizes stop-and-wait (Idle RQ) protocol at the data link layer to transmit frames of 2000 bits. (a) What is the data rate of the link (bits/sec) in order to achieve a utilization of 0.8? (10 points) (b) Keeping the frame size constant, should the data rate increase or decrease, and how much to achieve 0.95 utilization? (10 points) (c) What Signal to Noise (SNR) ratio in dB's would be necessary to achieve the required data rate in (a) for a 1 MHz bandwidth? How many symbols per sample would be necessary? (5 points) A network link (1km long with propagation rate of 2.5 *10^8 m/sec) utilizes stop-and-wait (Idle RQ) protocol at the data link layer to transmit frames of 2000 bits. (a) What is the data rate of the link (bits/sec) in order to achieve a utilization of 0.8? (10 points) (b) Keeping the frame size constant, should the data rate increase or decrease, and how much to achieve 0.95 utilization? (10 points) (c) What Signal to Noise (SNR) ratio in dB's would be necessary to achieve the required data rate in (a) for a 1 MHz bandwidth? How many symbols per sample would be necessary? (5 points)