Answer Posted / Swati Ronkali
The Process Control Block (PCB) in UNIX is a data structure that stores information about active processes managed by the operating system. It contains essential details about the process, such as its Program Counter (PC), CPU registers, memory management information, I/O status, account and scheduling information, and the parent-child relationship with other processes. The PCB allows the OS to keep track of the state of each active process, manage resource allocation, switch between processes efficiently, and handle process termination or suspension.
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