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 system packages and libraries

B. To manage notifications

C. To handle content providers

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

Answer: Option D

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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What is the primary difference between a process and a thread?

A. A process is a program in execution with its own isolated address space, while a thread is a smaller execution unit within a process.

B. Threads have larger memory spaces than processes.

C. Processes can run concurrently, whereas threads can only run sequentially.

D. An operating system contains multiple threads but only one master process.

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Correct Answer: Option A

Explanation:
Processes run inside distinct, isolated memory spaces managed by the OS, whereas threads represent execution pathways sharing the resources of their parent process.

This question belongs to: Computer Operating Systems

Question #2

Which Linux command is used to set or change the system's time zone?

A. tzselect

B. timedatectl

C. date -s

D. timezone

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Correct Answer: Option B

Explanation:
timedatectl set-timezone is the modern systemd command; tzselect is interactive but only sets environment.

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Question #3

In Windows, the command 'diskpart' is used for:

A. Disk formatting

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Correct Answer: Option B

Explanation:
diskpart is a command-line utility for managing disk partitions, volumes, and dynamic disks.

This question belongs to: Computer Operating Systems

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