Consider two hosts, A and B that are connected by a transmissions link of 2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the length of the link is 100Km. a. What is the propagation...

Consider two hosts, A and B that are connected by a transmissions link of
2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the

length of the link is 100Km.

a. What is the propagation delay from A to B, that is the amount of time

from when the first bit of the packet is transmitted at A, until it is received

at B?

b. What is the transmission time of the packet at A (the time from when

the first bit of the packet is sent into the wire and the time at which the

last bit is sent into the wire).

c. Suppose now that that length of the link is doubled. What is the

propagation delay from A to B now and what is the transmission time?

d. Now suppose that node C is connected to node B also by a 2 Mbps, 100

Km link. How long does it take from when the first bit is transmitted by A

to when the last bit is received at C, assuming B operates in a store-and -forward manner?