List-I (Fork Return Value / System Call) A. Negative Integer Value B. Exactly Zero (0) C. Positive Integer Value D. exec() system call List-II (Interpretation by Program) Execution context is now inside the newly created child process Execution context remains in parent; value is the child PID Process creation failed due to resource limits Overwrites the current process address space with a new binary

A-3, B-1, C-2, D-4 Explanation: A. Negative Integer Value 3. Process creation failed due to resource limits When fork() returns a negative value (typically -1 ), it indicates that the creation of a child process was unsuccessful (e.g., due to memory exhaustion or reaching the maximum allowable process limit). B. Exactly Zero (0) 1. Execution context is now inside the newly created child process A return value of 0 from fork() is received by the newly created child process to let it know that it is the child. C. Positive Integer Value 2. Execution context remains in parent; value is the child PID Upon successful creation, fork() returns a positive integer (which is the Process ID or PID of the child process) to the parent process. D. exec() system call 4. Overwrites the current process address space with a new binary The

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (Fork Return Value / System Call)

A. Negative Integer Value

B. Exactly Zero (0)

C. Positive Integer Value

D. exec() system call

List-II (Interpretation by Program)

Execution context is now inside the newly created child process

Execution context remains in parent; value is the child PID

Process creation failed due to resource limits

Overwrites the current process address space with a new binary

Choose the correct answer: