Which Windows tool allows a technician to view and modify low-level entries in the system configuration database using a tree layout? MCQ with Answer and Explanation

Question
Which Windows tool allows a technician to view and modify low-level entries in the system configuration database using a tree layout?
A. Registry Editor (regedit)
B. Disk Management Wizard
C. Device Manager Panel
D. Task Manager Console
Answer: Option A
Solution (By JKSSB Mock Tests)
The Registry Editor ('regedit') provides an administrative interface to browse and alter keys inside the core Windows configuration database.
This question belongs to: Computer Operating Systems
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In Windows, what does the 'whoami' command display?
A. The current user's username
B. The system uptime
C. The IP address
D. The computer name
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Correct Answer: Option A

Explanation:
whoami returns the domain and username of the current logged-in user.
This question belongs to: Computer Operating Systems
Question #2
In Linux, what is the root user's home directory?
A. /usr/root
B. /home/root
C. /root
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Correct Answer: Option C

Explanation:
The root user's home directory is /root, separate from other users' home directories under /home.
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What type of kernel configuration runs basic scheduling routines in kernel space but offloads device drivers and file systems to user space to maximize stability?
A. Microkernel
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Correct Answer: Option A

Explanation:
Microkernels improve system resilience by restricting kernel space to essential primitives, isolating driver crashes from bringing down the core OS.
This question belongs to: Computer Operating Systems
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