Summary of computer network errors
original title
This question may be a little difficult to understand at first. In fact, it is a question of how many data frames can be sent by the sender in one transmission cycle .
It's just that the limit link utilization is 80%, that is, only 80% of frames can be sent continuously.
Briefly explain the sending cycle: the sending cycle is the total time for the sender to send a data frame and receive its acknowledgment frame.
Including: sending time, propagation time (2* one-way propagation), confirmation frame sending time (nothing in this question, ignore)
Here are the steps to solve the problem:
So the answer is B.