for question number 2

2. In the network below, all nodes want to transmit an equal amounts of traffic to every other nodes, with throughput being R packets per second. Suppose that all of the links are half-duplex (i.e., cannot transmit and receive packets at the same time) and operate at 1000 packets per second and that the medium access control protocol is perfectly efficient (i.e.,all transmissions are collision-free) What is the maximum value of R? Hint: the hub repeats all input flows on all links except from they come from.] If the hub is now replaced with another switch, what is the maximum value of R now? Switch Hub