Assume that the nodal processing delay is negligible. Also, assume that the link between A and the router is 10,000 meters long and the link between B and the router is 20,000 meters long. If the propagation speed in both links is 200,000,000 m/sec, answer the following questions:

a.10 points) What is the end-to-end network throughput when a 10MB file is transferred from A to B?

b. (15 points) What is the end-to-end network throughput when a 100KB file is transferred from B to A? Assume that the router's buffer is large enough to avoid any data loss possibilities. Also, assume that the file is divided into 50 2KB chunks by B before being transferred to A and the router forwards a data chunk to A when it completely receives it from B.

c. (15 points) Assume that B sends a 2GB (2³⁴ bits) file to A after chunking it to 2KB packets. What should be the minimum router buffer size if we want to avoid any data loss for this file transfer?