Consider the network shown in the figure below, with three links, each with a

transmission rate of $1Mbps,$ and a propagation delay of $1$msec per link. Assume the

length of a packet is $2000$ bits.

What is the end$-$end delay of a packet from when it first begins transmission on link

$1,$ until is it received in full by the server at the end of link $3.$ Assume store$-$and

forward packet transmission.$Do$ this poroblem with $2000$bits.