Which protocol uses datagrams as its Protocol Data Unit?

When you use the redirect output symbol (>) on a command line, the shell creates the output file immediately, before the command is executed. Dem- onstrate that this is true.

What will be an ideal response?

Why should a threads package be interested in the events of a thread’s becoming blocked or unblocked? Why should it be interested in the event of a virtual processor’s impending preemption? (Hint: other virtual processors may continue to be allocated.)

What will be an ideal response?