What is the maximum memory addressable by a 32-bit Windows OS? MCQ with Answer and Explanation

What is the maximum memory addressable by a 32-bit Windows OS?
A. 2 GB
B. 8 GB
C. 16 GB
D. 4 GB
Answer: Option D
Solution (By JKSSB Mock Tests)
A 32-bit OS can address 2^32 bytes = 4 GB of memory, though some is reserved for hardware.

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Practice More Operating Systems Questions

Question #1
What type of operating system design runs a single application loop directly on hardware without processing delays, frequently used in automotive anti-lock brakes?
A. Network OS Shell
B. Time-Sharing Framework
C. Batch Processing OS
D. Real-Time Operating System (RTOS)

Correct Answer: Option D


Explanation:
An RTOS provides deterministic response timing guarantees necessary for critical automation tasks like braking loops or medical telemetry.

This question belongs to: Computer Operating Systems
Question #2
Which execution environment layer in Android handles core operations like memory management, thread orchestration, and garbage collection for modern apps?
A. Hardware Abstraction Layer
B. Dalvik Cache Engine
C. Android Runtime (ART)
D. Linux Kernel Core

Correct Answer: Option C


Explanation:
ART (Android Runtime) serves as the managed execution environment for modern Android applications, handling execution and garbage collection.

This question belongs to: Computer Operating Systems
Question #3
Which directory in Linux houses dynamic, transient operational runtime files such as system logs, process queues, and print spools?
A. /usr
B. /opt
C. /mnt
D. /var

Correct Answer: Option D


Explanation:
The '/var' directory contains variable files whose contents fluctuate continuously during normal system operation, including system logs and mail spools.

This question belongs to: Computer Operating Systems