Consider two nodes A and B directly connected to each other over a link that$$has a transmission rate of $200$ Kbps$.$ The propagation delay between the two nodes$$is $5$ms$.$ Now assume at time t $=0,400$ packets arrive simultaneously at node A and$$all of them have to be sent to node B $($one by one$).$ Assume that at t $=0,$ there were$$no packets in the queue at node A$,$ and node A has a buffer that is large enough to$$hold all $400$ packets. Ignore the processing delay at both nodes. Assume that the$$size of each packet is $2000$ bytes. Answer the following questions, and make sure to$$show your work.$$a$.$ Consider the $300$th packet. How much time does the packet have to wait in$$the queue at node A before it can be transmitted?$$b$.$ By the time the $300$th packet is completely transmitted, how many packets$$are already received by node B$?$c$.$ How much time will it take before the $400$th packet is completely received at$$node B$?$Hint: $($a$)$ in ideal case, queueing delay of a packet is the time it takes to transmit all$$packets ahead of it in the queue. The same way, the time you wait in a queue at a$$retail store is the amount of time it takes for all customers in front of you to be$$served$.($b$,$ c$)$ don$$t forget to account for parallelism and the difference between$$transmission and propagation delays.