Part $5.$ Background Reading Questions

$19.$ Which of the following statements is generally TRUE?

a$)$ An N x N Clos switch always has less cross points than an N x N square matrix switch

b$)$ The minimum number of cross points in a Clos switch depends on the number of stages

c$)$ A Bene$$ switch always has non$-$zero blocking probability

d$)$ Clos switches must have less than five stages

$20.$ Which of the following statements is generally TRUE? $`$Under Lee$$s approximation, the blocking probability of a non$-$Clos, three$-$stage switch with k inter$-$stage switches, N input$/$output switches and path usage probability P

a$)$ Increases with k

b$)$ Increases with P

c$)$ Is independent of the ratio

d$)$ Increases with the ratio