# Answer to Question #3026 in Action Script | Flash | Flex | ColdFusion for yousif

Question #3026

A three-stage space-division switch with N=120 is used in a switched network. There are 12 crossbars at the first and third stages and 4 crossbars at the middle stage.

i) Draw the configuration diagram.

ii) Calculate the total number of crosspoints.

iii) Find the possible number of simultaneous connections.

(1 marks)

iv) Find the possible number of simultaneous connections if we use one single crossbar (120x120).

v) Find the blocking factor in iii) .

c) Redesign the configuration in Q1b) using the Clos criteria. Find n, k, the total number of crosspoints, and draw the configuration diagram.

i) Draw the configuration diagram.

ii) Calculate the total number of crosspoints.

iii) Find the possible number of simultaneous connections.

(1 marks)

iv) Find the possible number of simultaneous connections if we use one single crossbar (120x120).

v) Find the blocking factor in iii) .

c) Redesign the configuration in Q1b) using the Clos criteria. Find n, k, the total number of crosspoints, and draw the configuration diagram.

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