I am currently enrolled in an Intro to Networking course and I have been studying for an upcoming exam by doing practice problems in the course textbook. I came across this question that stumped me. It deals with probability, which I have always had a hard time understanding and never really studied in depth.
Suppose an IP packet is fragmented into 10 fragments, each with a 1% (independent) probability of loss. To a reasonable approximation, this means there is a 10% chance of losing the whole packet due to loss of a fragment. What is the probability of net loss of the whole packet if the packet is transmitted twice
A) Assuming all fragments received must have been part of the same transmission?
B) Assuming any given fragment may have been part of either transmission?
I assume for part A there is a 20% chance of losing the whole packet, because since we send two transmissions the probability doubles. What I don't understand is how the probability is affected in part B. How does the probability change if the two packets are mixed within each transmission? Can someone explain this to someone who is not a math major? Thanks in advance.