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Computer Networks
Multiple Access Links Protocols
Q
Which of the following persistent method of random-access protocol reduces the collisions and efficiency of the network?
AA. 1 ? persistent
BB. Non persistent
CC. Persistent
DD. 1 ? persistent and non-persistent
Correct Answer:
B. B. Non persistent
Explanation:
Unlike 1- persistent in non-persistent methods, stations wait for some random time even if it finds the channel idle. This random time reduces the collision at the same time it reduces the efficiency because random times may keep the channel unused even the stations have frames to send.
