Is it possible for an application to enjoy reliable data transfer even when the application runs over UDP? If so, how? Suppose a process in Host C has a UDP socket with port number 6789. Suppose both...

Is it possible for an application to enjoy reliable data transfer even when the

application runs over UDP? If so, how?

Suppose a process in Host C has a UDP socket with port number 6789.

Suppose both Host A and Host B each send a UDP segment to Host C with

destination port number 6789. Will both of these segments be directed to the

same socket at Host C? If so, how will the process at Host C know that these

two segments originated from two different hosts?