Problem 6. A path in a circuit-switched network has a data rate of 1 Mbps. The setup phase requires the exchange of 600 bits while the teardown phase requires the exchange of 400 bits. Assume the distance between the source and destination is 5000 km and the propagation speed is 2 x 108 m/s. A. What is the delay if we are exchanging 1000 bits during the data transfer phase? B. What is the delay if we are exchanging 1,000,000 bits during the data transfer phase