$3$

Two neighboring nodes $($ A and $B)$ use a sliding$-$window protocol with a $3-$bit sequence number. As the ARQ mechanism, Go$-$back$-$N is used with a window size of $5.$ Assuming that $A$ is transmitting and $B$ is receiving. Show the window positions for the following succession of events $($Q#$3-$Q#$5)$: