2 votes 2 votes Q If probability of frame reaching safely is 0.1 then mean number of transmissions of a frame to make it success is _____. How to solve this question? Computer Networks computer-networks probability expectation + – UK asked Jan 21, 2016 UK 1.9k views answer comment Share Follow See 1 comment See all 1 1 comment reply UK commented Jan 21, 2016 reply Follow Share I tried like this - first transmission successful - 0.1 first failed transmission then - 0.9+0.1(X) , where X is expected number of trials then , X=0.1+0.9+0.1(X) solving this i got - 10/9 $\approx$1.11 0 votes 0 votes Please log in or register to add a comment.
Best answer 3 votes 3 votes mean number of transmissions of a frame to make it success = 1/0.1 =10 bhawanagupta15 answered Jan 22, 2016 • selected Jan 23, 2016 by Pooja Palod bhawanagupta15 comment Share Follow See all 3 Comments See all 3 3 Comments reply UK commented Jan 23, 2016 reply Follow Share Thank you...:) 0 votes 0 votes set2018 commented Dec 8, 2017 reply Follow Share how ? 0 votes 0 votes Ayan Kumar Pahari commented Feb 1, 2020 reply Follow Share We will first send 1 frame, 0.1 will reach safely and 0.9 will not so will send it again and this goes on. following this we will get a infinite GP as 1+0.9+0.9^2+.... After solving this we get 10.(sum of infinite GP= a/(1-r)) 1 votes 1 votes Please log in or register to add a comment.
