In Windows, the 'Event Viewer' is used to: MCQ with Answer and Explanation

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In Windows, the 'Event Viewer' is used to:

A. Edit system registry

B. View system, application, and security logs

C. Manage network connections

D. Configure system startup

Answer: Option B

Solution (By JKSSB Mock Tests)

Event Viewer displays logs of system events, errors, warnings, and informational messages for troubleshooting.

This question belongs to: Computer Operating Systems

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Question #1

In Windows, the 'Windows Update' service is responsible for:

A. Downloading and installing updates for the OS and other Microsoft products

B. Updating device drivers

C. Installing new applications

D. Managing system restore points

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Correct Answer: Option A

Explanation:
Windows Update provides security patches, feature updates, and driver updates from Microsoft.

This question belongs to: Computer Operating Systems

Question #2

Which mechanism ensures that only one process can execute inside a critical section of code at any given time?

A. Mutual Exclusion

B. Paging Allocation

C. Spooling Routine

D. Context Swapping

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Correct Answer: Option A

Explanation:
Mutual Exclusion (Mutex) guarantees that if a process is executing inside its critical section, no other processes are permitted to enter that code path.

This question belongs to: Computer Operating Systems

Question #3

What does 'Preemptive Multitasking' ensure across system workloads?

A. Applications determine exactly when they give up processor time voluntarily.

B. The operating system slices execution chunks using hardware clock signals to interrupt running tasks fairly.

C. Hardware operates without an active process scheduler scheduler.

D. Only one single system task can execute per computer restart cycle.

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Correct Answer: Option B

Explanation:
Preemptive multitasking uses hardware timer interrupts to halt running tasks, preventing any single application from locking up the machine.

This question belongs to: Computer Operating Systems

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