Question

Importance of process control block(PCB)

Answer 1

Role of process control block. At any instance, a process will be having various information associated with it like identifier, state, priority, program counters, memory pointers, accounting information etc. Such information are stored in a data structure called as Process Control block (PCB).

Answer 2

Process Control Block (PCB, also called Task Controlling Block, Entry of the Process Table, Task Struct, or Switchframe) is a data structure in the operating system kernel containing the information needed to manage a particular process. The PCB is "the manifestation of a process in an operating system."Oc