Consider the ARQ for the data link layer. In class, we learned that the efficiency of Stop$-$and$-$Wait goes down as the delay$-$bandwidth product increases. Instead of Stop$-$and$-$Wait consider Go$-$back$-$N$.(12$ pts$)($a$)$ Suppose that the frame$-$loss rate is very low and is negligible. What do you need to do to make sure the efficiency of Go$-$back$-$N does not go down as the delay$-$bandwidth produc increases? Explain your answer $($if needed, draw diagrams to illustrate your explanation$)(6$ pts$)($b$)$ Suppose that the frame$-$loss rate is not low and is considerable. Explain why the efficiency of Go$-$back$-$N will still go down as the delay$-$bandwidth product increases ever if you incorporate your measure in part $($a$)$ into the system.Consider the ARQ for the data link layer.