Q11
The number of cross point needed for 10 lines in a cross point switch which is full duplex in nature and there are no self connection is
A.
100
B.
45
AnswerC.
50
D.
90
Answer: Option B
Solution
Answer: Option B
Solution:
As all lines are full-duplex and there are no self connections, only the cross points above the diagonals are needed. Hence formula for the number of cross points required is n(n-1)/2.