Q2. (6 Points) Consider the circuit-switched network below (Figure 1.13 in an older version of textbook). Recall that there are 4 circuits on each link. Label the four switches A, B, C and D, going in the clockwise direction. Answer the following questions and briefly justify you answer. a) (2 points) What is the maximum number of simultaneous connections that can be in progress at any one time in this network? Explain or show work. b) (2 points) Suppose that all connections are between switches A and C. What is the maximum number of simultaneous connections that can be in progress? Explain or show work. c) (2 points) Suppose we want to make four connections between switches A and C, and another four connections between switches B and D. Can we route these calls through the four links to accommodate all eight connections. Why or why not