Q5. Describe the Store-and-forward concept in packet switching network. To what type of delays it contributes?

Q6. A packet of length 1,500 bytes propagates over a link of distance 3,000 km, propagation speed 3.0x108 m/s, and transmission rate 2 Mbps

- Calculate the propagation delay.

- Calculate the transmission delay

- What is the total delay (ignoring other delay components)?

- If the packet was 10,000 bytes, would this change the propagation delay?

Q7. Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has three links, of rates R1=700 kbps, R2=1 Mbps, and R3=1.5 Mbps

- Assuming no other traffic in the network, what is the throughput for the file transfer?

- Suppose the file is 4 million bytes. Dividing the file size by the throughput, roughly how long will it take to transfer the file to Host B?

- Repeat (a) and (b), but now with R2 reduced to 100 kbps