RTT and PLR(Packet Loss Ratio)

Someone plz close this topic

I know basically nothing about arduino because i just started learning it by myself.
My teachers don't help me either. They say that i have to search on internet for information that I don't find.

Yet I have to do a Chat room and on top of that i have to get RTT and PLR.

I thought this forum would help me to find an answear for my questions. But this is a complete waist of time.

I really wanted to learn more about arduino with all of you, but you choose to ignore me

Anyway, thanks a lot