Which of the following application file formats is natively used to distribute and install apps on the Android operating system? MCQ with Answer and Explanation

Which of the following application file formats is natively used to distribute and install apps on the Android operating system?
A. .apk
B. .deb
C. .exe
D. .msi
Answer: Option A
Solution (By JKSSB Mock Tests)
Android packages use the '.apk' (Android Package Kit) file extension to bundle application code, resources, and assets for easy installation.

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Practice More Operating Systems Questions

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What type of file system structure records modifications to a storage drive in a dedicated log file before committing changes to track data corruption against crashes?
A. FAT32 File System
B. Volatile Ramdisk Layout
C. Journaling File System
D. Compressed Allocation Mapping

Correct Answer: Option C


Explanation:
Journaling file systems (like NTFS or ext4) track pending file changes in a dedicated journal log, allowing rapid structural recovery in the event of an abrupt power failure.

This question belongs to: Computer Operating Systems
Question #2
In Windows, the 'BitLocker' feature provides:
A. Full disk encryption for data protection
B. Network encryption
C. Password management
D. File-level encryption

Correct Answer: Option A


Explanation:
BitLocker encrypts entire drives, protecting data if the device is lost or stolen, using TPM and user authentication.

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Question #3
Which Linux command is used to stop a running service (e.g., Apache)?
A. kill -9 PID
B. systemctl stop service
C. service stop
D. pkill service

Correct Answer: Option B


Explanation:
On systemd-based Linux, systemctl stop is used to stop services; older sysvinit used service command.

This question belongs to: Computer Operating Systems