In Android, the 'Dalvik Cache' is used for: MCQ with Answer and Explanation

Question
In Android, the 'Dalvik Cache' is used for:
A. Temporary internet files
B. Caching downloaded files
C. Storing user preferences
D. Storing optimized bytecode for faster app execution
Answer: Option D
Solution (By JKSSB Mock Tests)
Dalvik Cache stores the optimized Dalvik executable (.dex) files for apps to speed up loading; replaced by ART in newer Android.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which of the following is a disadvantage of paging?
A. External fragmentation
B. Complex memory management
C. Slow allocation
D. Internal fragmentation
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Correct Answer: Option D

Explanation:
Paging causes internal fragmentation because the last page of a process may not be fully used; external fragmentation is eliminated.
This question belongs to: Computer Operating Systems
Question #2
Which file in older BIOS-based Windows operating systems (like Windows XP) held the boot configuration options and startup menus?
A. boot.ini
B. grub.cfg
C. BCD (Boot Configuration Data)
D. config.sys
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Correct Answer: Option A

Explanation:
Legacy Windows systems (up to Windows XP) relied on the text-based 'boot.ini' file located in the root system folder to read boot configuration parameters.
This question belongs to: Computer Operating Systems
Question #3
What is the main advantage of a 64-bit operating system over a 32-bit one?
A. Ability to address more than 4 GB of RAM
B. Smaller file sizes
C. Faster CPU speed
D. Better graphics performance
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Correct Answer: Option A

Explanation:
64-bit OS can address larger memory space (theoretically up to 16 exabytes) compared to 32-bit's 4 GB limit.
This question belongs to: Computer Operating Systems
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