What is process migration and where it is exactly used ?

Question

What is the use of TFTP and where exactly it becomes necessary to use it ?

Answer 1

In Process Migration process, a process moves from one machine to another machine. While doing this activity, source machine make sure about the state of process. In all the states, a running process can't be transfer one machine to another machine. Most probably, when source machine doesn't have sufficient amount of memory then this transfer can be initiated.