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In UNIX, each process is identified by its __________

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In UNIX, each process is identified by its __________

(a) Process Control Block

(b) Device Queue

(c) Process Identifier

(d) None of the mentioned

This question was addressed to me by my college professor while I was bunking the class.

This key question is from Process Creation topic in division Processes of Operating System

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The correct option is (c) Process Identifier

The explanation: In Unix, each process is identified by its Process Identifier or PID. The PID provides unique value to each process in the system so that each process can be identified uniquely.

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