Suppose two Hosts, A and B$,$ are separated by $100$ meters, and are connected by a direct link of R$=10$ bps$.$

Suppose the propagation speed over the link is $200$ meters $\frac{?}{sec}.$ Consider sending a file of $1,000$ bits from

Host A to Host B$,$ and no other traffic in the network.

a$.$ Suppose that the file is sent as one big message. Calculate the transmission delay and the

propagation delay. How long does it take to receive the file?

b$.$ Assume there is one router between Hosts A and B with both links at $10$ bps transmission rate.

Assume that the router uses store$-$and$-$forward packet switching. What is the end$-$to$-$end delay to

send the file as one big message?

c$.$ Assume that the file is broken up into $10$ packets with each packet containing $100$ bits, and each

packet is acknowledged by host B and the transmission time of an acknowledgment packet is

negligible. Finally, assume that the sender cannot send a packet until the preceding one is

acknowledged. How long does it take to receive the file on Host B$?$