Which of the following is a type of memory management that uses variable-sized partitions? MCQ with Answer and Explanation

Which of the following is a type of memory management that uses variable-sized partitions?
A. Paging
B. Buddy system
C. Fixed partitioning
D. Segmentation
Answer: Option D
Solution (By JKSSB Mock Tests)
Segmentation allows variable-size memory segments based on logical units; paging uses fixed-size pages.

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Practice More Operating Systems Questions

Question #1
What is the primary difference between multiprocessing and multitasking?
A. Multiprocessing uses multiple CPUs, while multitasking uses a single CPU
B. Multiprocessing refers to running multiple programs, multitasking to multiple threads
C. Both are the same concept
D. Multitasking uses multiple CPUs, while multiprocessing uses a single CPU

Correct Answer: Option A


Explanation:
Multiprocessing involves multiple physical CPUs/cores to execute processes concurrently, whereas multitasking is the ability to run multiple processes on one CPU via time-sharing.

This question belongs to: Computer Operating Systems
Question #2
What is the function of the Android 'BluetoothAdapter'?
A. To send files via Bluetooth
B. To manage Bluetooth hardware and perform operations like discovery and pairing
C. To control Bluetooth audio
D. To manage Bluetooth profiles

Correct Answer: Option B


Explanation:
BluetoothAdapter is the entry point for all Bluetooth operations, such as enabling/disabling, discovering devices, and bonding.

This question belongs to: Computer Operating Systems
Question #3
In Windows, the Registry is divided into which main hives?
A. HKEY_LOCAL, HKEY_REMOTE, HKEY_DEFAULT
B. HKEY_CONFIG, HKEY_DRIVERS, HKEY_SERVICES
C. HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, HKEY_CLASSES_ROOT, HKEY_USERS, HKEY_CURRENT_CONFIG
D. HKEY_ROOT, HKEY_USER, HKEY_SYSTEM, HKEY_SOFTWARE

Correct Answer: Option C


Explanation:
The five root keys (hives) are HKLM, HKCU, HKCR, HKU, and HKCC.

This question belongs to: Computer Operating Systems