Answer:
500kbps
Explanation:
Bandwidth is the actual amount of data that a network is capable of transferring theoretically.
Throughput is the actual amount of data passing through a connection. It is the rate (usually measured in bps- bits per sec or pps - packets per second) at which packets or bits are successfully delivered over a network channel
If R₁=500 kbps, R₂=2 Mbps, and R₃ = 1 Mbps.
Since there is no other traffic in the link from Host A to Host B, the Throughput is the minimum of the links between Host A and Host B. Therefore:
Throughput= Mininum(R₁,R₂,R₃)
=500kbps