Please explain how do you find these asnwers step by step please. I do not undes

Question

Please explain how do you find these asnwers step by step please. I do not undestand anything

Consider the circuit-switched network in Figure 1.13. Recall that there are 4 circuits on each link. Label the four switches A, B, C and D, going in the clockwise direction. What is the maximum number of simultaneous connections that can be in progress at any one time in this network? Suppose that all connections are between switches A and C. What is the maximum number of simultaneous connections that can be in progress? 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?

Explanation / Answer

answers:-

a) since each switch is connected to other adjacent switch via 4 channels and there are 4 switches in the network.

so the maximum number of simultaneous connections that can be in progress at a given time is 16.

b) since all connection are between A and C and 4 in each switch so the maximum connections would be 8.

c) It is possible to do so.

the connections would be.

2 from B to A

2 from A to B

4 from A to D

4 from B to C

2 from D to C

2 from C to D

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