What is the difference between a desktop and mobile operating system? MCQ with Answer and Explanation

Question
What is the difference between a desktop and mobile operating system?
A. Desktop OS is free; mobile OS is paid
B. Mobile OS is optimized for touch and smaller screens; desktop for mouse/keyboard
C. Desktop OS handles multitasking; mobile does not
D. No difference
Answer: Option B
Solution (By JKSSB Mock Tests)
Mobile OSes like Android and iOS are designed for touchscreens and resource constraints.
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Question #1
What is the primary technical role of a Just-In-Time (JIT) compiler in modern software engineering environments?
A. To compile intermediate bytecode into native machine instructions on the fly during runtime to improve execution speed.
B. To translate assembly text into machine binary code files before shipping software.
C. To scrub malicious registry entries before the operating system boots up.
D. To merge separate static library modules into a single binary file.
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Correct Answer: Option A

Explanation:
JIT compilers improve execution speed by compiling bytecode into native machine instructions on the fly as the program runs, combining the flexibility of interpretation with the speed of compilation.
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Question #2
Which of the following is a utility software for managing network connections?
A. Task Manager
B. Registry Editor
C. Disk Cleanup
D. Network and Sharing Center
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Correct Answer: Option D

Explanation:
Network and Sharing Center is a Windows utility to configure network settings.
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Question #3
Which of the following is a utility software used to schedule tasks?
A. Antivirus
B. Task Scheduler
C. Compression tool
D. Backup software
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Correct Answer: Option B

Explanation:
Task Scheduler is a Windows utility that allows users to schedule automated tasks.
This question belongs to: Computer Computer Software
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