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 = 2 Mbps, R₂ = 2 Mbps, and R₃ = 4 Mbps.

Assuming no other traffic in the network, what is the throughput for the file transfer? (5 Points)

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? (10 Points)