If a network designer wants to connect 5 routers as point-to-point simplex line, then total number of lines required would be
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 32 |
Answer : B Explanation : If 1st router connect with other 4 routers then total for 1st=4 same as 2nd router connect with 3 routers so total for 2nd=3 same as for 3rd router connect with 2 routers so total =2 same as 4th router with 1 so total=1 so total simplex lines will be = 4+3+2+1=10. So answer is 'B'. Deepika said: (1:41pm on Tuesday 10th September 2013)
n(n-1)/2...so 5(5-1)/2=20/2=10
afraz said: (8:27pm on Thursday 28th November 2013)
for simplex n(n-1)for half duplex or full duplex n(n-1)/2
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
