In Android, which permission category protects sensitive information such as contacts and location? MCQ with Answer and Explanation

Question
In Android, which permission category protects sensitive information such as contacts and location?
A. System permissions
B. Signature permissions
C. Dangerous permissions
D. Normal permissions
Answer: Option C
Solution (By JKSSB Mock Tests)
Dangerous permissions are those that could affect user privacy or device operation, requiring user approval at runtime.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
What is the primary role of the scheduler in an OS?
A. To handle I/O requests
B. To allocate memory to processes
C. To select which process gets CPU time and for how long
D. To manage file storage
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Correct Answer: Option C

Explanation:
The CPU scheduler determines the order and duration of process execution to optimize system performance and fairness.
This question belongs to: Computer Operating Systems
Question #2
Which of the following commands can be used in Linux to move a file or rename it directly?
A. cp
B. ren
C. mv
D. rn
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Correct Answer: Option C

Explanation:
The 'mv' command stands for move and is used in Unix-like systems to either move a file to another path or change its name.
This question belongs to: Computer Operating Systems
Question #3
In Windows Operating Systems, what does the 'System Restore' utility do?
A. It rolls back system files, registry configurations, and driver installations to a previous safe state without affecting personal data.
B. It deletes all user photos and media files permanently to save storage space.
C. It reformats the motherboard BIOS chip.
D. It upgrades the processor clock speeds automatically.
Discuss
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Correct Answer: Option A

Explanation:
System Restore creates system snapshots (restore points) allowing users to revert critical operational registry or OS files to fix configuration corruption.
This question belongs to: Computer Operating Systems
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