Delays specifies how long it takes for a bit of data to travel across the network from one communication endpoint to
another. Delays are measured in seconds or mili seconds.
 Network throughput ,rate at which bits are transferred between sender/receiver , and typically measured in bits per second
(bps), as in kilobits per second (Kbps) , megabits per second (Mbps) or gigabits per second (Gbps).

Consider the scenario shown in the figure . Calculate the end-end delay
for this scenario, if the file size is 3000 bytes and propagation speed is
2.5 x108 m/s. The packet suffers processing delay and queuing delay of
5 msec and 35 msec, respectively. Also calculate the average throughput
for this network.
i.
Assume a single packet is being transmitted.
ii. Assume 3000 bytes are transmitted in two packets with 1500 bytes
each.
Step 1: Calculate the value of transmission delay dtrans
dprop