Which technology allows multiple distinct operating system instances to run simultaneously on a single physical host computer machine? MCQ with Answer and Explanation

Question

Which technology allows multiple distinct operating system instances to run simultaneously on a single physical host computer machine?

A. Multithreading

B. Disk Defragmentation

C. Virtualization (via Hypervisors)

D. Spooling

Answer: Option C

Solution (By JKSSB Mock Tests)

Virtualization uses a hypervisor abstraction layer to divide physical hardware pools into multiple self-contained Virtual Machines (VMs) running separate operating systems.

This question belongs to: Computer Operating Systems

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Which structural concept describes a situation where a lower-priority process holds a resource needed by a higher-priority process, stalling execution?

A. Context Switching Delay

B. Aging Process

C. Priority Inversion

D. Thrashing Cycle

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Correct Answer: Option C

Explanation:
Priority Inversion occurs when a low-priority task holds a resource required by a high-priority task, causing the high-priority task to wait indirectly.

This question belongs to: Computer Operating Systems