$(1)$ Performance of Stop$-$and$-$wait protocol

Consider a DLC system running Stop$-$and$-$wait protocol with the following parameters.

$$#$>$ Packet size is $1250$ bytes including $25$ bytes of overhead

$$#$>$ ACK packets are $25$ bytes long

$$#$>$ Channel capacity $($speed$)$ is $1$Mbps $($Mega bits$/$sec$)$

$$#$>$ Propagation delay $=0\mathrm{.}5ms$

$$#$>$ Ignore the processing delay at both Tx & Rx