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

Question
What is the purpose of the Android 'Download Manager'?
A. To manage files in the Downloads folder
B. To prioritize download speed
C. To scan downloads for malware
D. To handle long-running downloads in the background
Answer: Option D
Solution (By JKSSB Mock Tests)
Download Manager runs background downloads, supports pause/resume, and notifies user upon completion.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
In Windows, which command is used to list all running services?
A. sc query
B. tasklist
C. net start
D. services.msc
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Correct Answer: Option A

Explanation:
The 'sc query' command (Service Control) displays the status of all installed services, while services.msc opens the GUI.
This question belongs to: Computer Operating Systems
Question #2
What is the purpose of the Linux 'nano' command?
A. To view system processes
B. To manage network interfaces
C. A simple text editor
D. To set environment variables
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Correct Answer: Option C

Explanation:
nano is a user-friendly text editor for the command line, often pre-installed on many Linux distributions.
This question belongs to: Computer Operating Systems
Question #3
What structural component converts high-level programming instructions directly into a series of system calls handled by the operating system kernel?
A. Master Boot Sector
B. Hardware Abstraction Layer
C. API Framework or Standard Runtime Libraries
D. BIOS Chipset
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Correct Answer: Option C

Explanation:
Application Programming Interfaces (APIs) and runtime libraries bridge user applications to the underlying system calls of the operating system kernel.
This question belongs to: Computer Operating Systems
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