Question

Suppose that a TCP sender receives multiple successive (in a row) duplicate acknowledgements for segment x. What should the sender infer has happened, and why, and what action (if any) should the sender take?

Answer 1

I tried to answer it already here:
http://openstudy.com/study#/updates/54fc4593e4b0ca89bc35cacd
Hope it helps

Answer 2

Thank you! Helps alot.

Answer 3

You're welcome =)