Does it make sense to have more than one UDP Datagram socket on standby? Are “simultaneous” packets dropped or queued by the kernel?

UDP is a bad idea for transferring files, as you cannot guarantee the order in which packets will be received, or whether they will be received at all. If you are thinking to build a fault tolerant transport layer on top of this, you should just use TCP/IP instead, as that's exactly what it does.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.