Open In App

GATE | GATE IT 2006 | Question 68

Like Article
Like
Save
Share
Report

On a wireless link, the probability of packet error is 0.2. A stop-and-wait protocol is used to transfer data across the link. The channel condition is assumed to be independent from transmission to transmission. What is the average number of transmission attempts required to transfer 100 packets?
(A) 100
(B) 125
(C) 150
(D) 200


Answer: (B)

Explanation: Probability of success = 0.8
E = 0.8 * 1 + 0.8 * 1 +… n times = 100 {for 100 packets}
=> 0.8 * 1 * n = 100
=> n = 125
to receive 100 packets we have to transmit 125 packets

Quiz of this Question
Please comment below if you find anything wrong in the above post


Last Updated : 28 Jun, 2021
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads