What is the purpose of the Android 'Package Manager'? MCQ with Answer and Explanation

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What is the purpose of the Android 'Package Manager'?

A. To manage notifications

B. To install, upgrade, and remove applications on the device

C. To handle content providers

D. To manage system packages and libraries

Answer: Option B

Solution (By JKSSB Mock Tests)

Package Manager is responsible for installation, update, and removal of apps, managing APK files and application metadata.

This question belongs to: Computer Operating Systems

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Which Linux command is used to view the contents of a directory in a tree-like format?

A. find

B. ls -R

C. tree

D. dir

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Correct Answer: Option C

Explanation:
The 'tree' command displays directories and subdirectories in a tree structure; may need installation.

This question belongs to: Computer Operating Systems

Question #2

Which of the following commands is used in Linux to copy files or directories from one location to another?

A. ln

B. mv

C. cp

D. rm

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Correct Answer: Option C

Explanation:
The 'cp' command is used in Unix-like systems to copy files or entire directory trees from a source path to a destination path.

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Question #3

Which Linux command is used to display the system's hostname and IP address?

A. ifconfig

B. hostname -I

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Correct Answer: Option C

Explanation:
hostname -I shows IP addresses; ifconfig and ip addr display network interfaces with IPs.

This question belongs to: Computer Operating Systems

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