What is the purpose of the Android 'Notification System'? MCQ with Answer and Explanation

Question
What is the purpose of the Android 'Notification System'?
A. To display alerts and messages from apps on the status bar or lock screen
B. To control volume settings
C. To manage system notifications
D. To handle application permissions
Answer: Option A
Solution (By JKSSB Mock Tests)
The notification system allows apps to notify users about events, messages, and updates in a non-intrusive manner.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
In Linux, the 'tar' command is used for:
A. Compressing files
B. Archiving files into a single file
C. Deleting files
D. Copying files
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Correct Answer: Option B

Explanation:
tar (tape archive) creates archive files (.tar) that bundle multiple files; it can also compress with options like -z for gzip.
This question belongs to: Computer Operating Systems
Question #2
What is the purpose of the Windows 'Safe Mode'?
A. To boot with minimal drivers and services for troubleshooting
B. To enable network support for recovery
C. To load the last known good configuration
D. To run the system with maximum performance
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Correct Answer: Option A

Explanation:
Safe Mode loads only essential drivers and services, allowing users to diagnose and fix system issues caused by problematic software or drivers.
This question belongs to: Computer Operating Systems
Question #3
Which of the following files acts as the default boot loader for modern Windows systems utilizing UEFI firmware?
A. NTLDR
B. grub.efi
C. io.sys
D. bootmgr.efi
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Correct Answer: Option D

Explanation:
Modern Windows operating systems on UEFI systems use bootmgr.efi as the primary boot manager, whereas older BIOS-based legacy systems used NTLDR or bootmgr.
This question belongs to: Computer Operating Systems
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