In the provided diagram, there are three links, each with its own transmission rate and

length. Let's assume the packet size is $2000$ bytes. The propagation speed on each link is

$4$x$10^5$ m$/$sec$.$ Additionally, each node $($e$.$g$.,$ router, source and destination hosts$)$

experiences a nodal processing delay of $8$ milliseconds. Round your answer to two decimal

places after leading zeros. Also, assume $1$ Mbps is equivalent to $1$x$106$ bps$.$

a$.$ Calculate the transmission delay and propagation delay in milliseconds for each

of the three links.

b$.$ Determine the end$-$to$-$end delay and round$-$trip delay in seconds for one packet,

considering the absence of queuing delay in the network.

c$.$ Calculate the end$-$to$-$end throughput $($in Mbps$)$ between the two hosts,

assuming that $20$ connections evenly distribute Link $2\text{'}$s capacity, while Link $1$ and

$3$ are exclusively dedicated to the hosts