In Windows, the Registry is divided into which main hives? MCQ with Answer and Explanation

Question
In Windows, the Registry is divided into which main hives?
A. HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, HKEY_CLASSES_ROOT, HKEY_USERS, HKEY_CURRENT_CONFIG
B. HKEY_LOCAL, HKEY_REMOTE, HKEY_DEFAULT
C. HKEY_CONFIG, HKEY_DRIVERS, HKEY_SERVICES
D. HKEY_ROOT, HKEY_USER, HKEY_SYSTEM, HKEY_SOFTWARE
Answer: Option A
Solution (By JKSSB Mock Tests)
The five root keys (hives) are HKLM, HKCU, HKCR, HKU, and HKCC.
This question belongs to: Computer Operating Systems
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Question #1
In Windows, the 'Disk Defragmenter' is optimized for:
A. Both HDDs and SSDs
B. Mechanical hard disk drives (HDDs)
C. Solid-state drives (SSDs)
D. USB flash drives
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Correct Answer: Option B

Explanation:
Defragmentation is beneficial for HDDs; SSDs use wear leveling and do not require defragmentation; Windows may recognize SSDs and trim instead.
This question belongs to: Computer Operating Systems
Question #2
What is the primary advantage of a distributed operating system?
A. It has better graphics
B. It requires less memory
C. It is easier to manage than a single system
D. It allows multiple computers to work together as a single system, providing scalability and fault tolerance
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Correct Answer: Option D

Explanation:
Distributed OS manages resources across network nodes, offering high availability and load balancing.
This question belongs to: Computer Operating Systems
Question #3
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. Thrashing Cycle
C. Aging Process
D. Priority Inversion
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Correct Answer: Option D

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
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