Data Communication and Computer Networks - Data Communication

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41. Slotted ALOHA

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Option : C
Explanation :

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42. Start and stop bits are used in serial communication for

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Option : C
Explanation :

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43. In the carrier sense network, if prevailing condition is a 'channel busy', then technique used is

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Option : B
Explanation :

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44. The systems that can be used in both priority and non-priority modes is

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Option : C
Explanation :

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45. 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

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Option : B
Explanation : As all lines are full-duplex and there are no self-connections, only the cross points above the diagonal are needed. Hence formula for the number of cross points needed is n (n -1) / 2

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