In Windows, the 'Registry' has five root keys. Which one contains information about the current hardware configuration? MCQ with Answer and Explanation

Question
In Windows, the 'Registry' has five root keys. Which one contains information about the current hardware configuration?
A. HKEY_CURRENT_CONFIG
B. HKEY_CLASSES_ROOT
C. HKEY_CURRENT_USER
D. HKEY_LOCAL_MACHINE\HARDWARE
Answer: Option A
Solution (By JKSSB Mock Tests)
HKEY_CURRENT_CONFIG (HKCC) stores information about the current hardware profile; HKLM\HARDWARE also contains hardware info.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
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. Priority Inversion
D. Aging Process
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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
Question #2
In Windows, the Environment Variables are stored in the Registry under which key?
A. HKEY_CLASSES_ROOT\Environment
B. HKEY_CURRENT_USER\Environment
C. Both A and B
D. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
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Correct Answer: Option C

Explanation:
System-wide environment variables are stored in HKLM\...\Environment, and user-specific ones in HKCU\Environment.
This question belongs to: Computer Operating Systems
Question #3
Which of the following is a file system used primarily on optical discs?
A. ISO 9660
B. HFS
C. NTFS
D. ext4
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Correct Answer: Option A

Explanation:
ISO 9660 is the standard file system for CD-ROMs and DVDs; others are for hard drives.
This question belongs to: Computer Operating Systems
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