alleryStart learning →The Process Control Block (PCB) stores
Aruntime state: PID, registers, memory map, files
Bonly the program's compiled bytecode
Cthe OS kernel itself
Duser passwords and authentication tokens
Answer & Solution
Correct answer: A. runtime state: PID, registers, memory map, files
The PCB is the OS's per-process bookkeeping record.
It holds everything needed to suspend and resume the process: PID, register values, program counter, memory layout, open file descriptors, scheduling priority, signals pending.
Bytecode lives in memory pages, not the PCB
the kernel itself is unrelated
passwords belong to user/session management.
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