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UGC-NET | UGC NET CS 2017 Jan – III | Question 30

  • Last Updated : 04 Apr, 2018

A node X on a 10 Mbps network is regulated by a token bucket. The token bucket is filled at a rate of 2 Mbps. Token bucket is initially filled with 16 megabits. The maximum duration taken by X to transmit at full rate of 10 Mbps is _________ secs.
(A) 1
(B) 2
(C) 3
(D) 4


Answer: (B)

Explanation:
In given question token bucket is filling @ 2 Mbps.
Token bucket capacity(b) = 16 Mb
Maximum possible transmission rate (M) = 10 Mbps.

Maximum duration taken by X for transmission = b / (M - r)
i.e.                                         = 16 / (10 - 2) 
                                             = 2 seconds  

So, option (B) is correct.

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