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UGC-NET | UGC NET CS 2016 Aug – III | Question 28

  • Last Updated : 17 Apr, 2018

A slotted ALOHA network transmits 200 bits frames using a shared channel with 200 kbps bandwidth. If the system (all stations put together) produces 1000 frames per second, then the throughput of the system is _______.
(A) 0.268
(B) 0.468
(C) 0.368
(D) 0.568


Answer: (C)

Explanation:
For pure aloha Throughput(S) = Ge-2G.
For Slotted aloha Throughput(S) = Ge-G. (it is maximum at G = 1).
i.e. S = 1 * e-1.
S = 1 / e.
S = 1 / 2.71
S = 0.368.
So, option (C) is correct.


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