Q4. Suppose that Bob's and Alice's computers are connected by an R bits/sec link that uses circuit switching and that Bob sends 892,500 bits to Alice over the link. Suppose that circuit switching on the link is implemented using Time Division Multiplexing (TDM), that a frame is 1 sec in duration, and that a frame consists of 12 slots. Suppose that Bob is assigned one slot in every frame and that it took Bob 7 minutes to send all bits to Alice. Find R, I.e., the transmission rate of the link connecting Bob's and Alice's computers. (8 points)