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

Question
What is the purpose of the Android 'NetworkStatsManager'?
A. To set network priorities
B. To manage network interfaces
C. To monitor current network speed
D. To query historical network usage statistics
Answer: Option D
Solution (By JKSSB Mock Tests)
NetworkStatsManager provides data on network usage by app over time, used for data quota monitoring.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which of the following is a type of file system that supports journaling?
A. NTFS
B. ext4
C. ext3
D. All of the above
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Correct Answer: Option D

Explanation:
ext3, ext4, and NTFS all support journaling, which logs changes to prevent corruption.
This question belongs to: Computer Operating Systems
Question #2
Which file system is used as the standard, default option for modern internal drives in Windows 10 and Windows 11?
A. FAT32
B. NTFS
C. exFAT
D. ext4
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Correct Answer: Option B

Explanation:
NTFS (New Technology File System) is the native and default file system for modern Windows installations, providing security, journaling, and large file size support.
This question belongs to: Computer Operating Systems
Question #3
In operating systems, what is the primary function of the 'Medium-Term Scheduler'?
A. To handle real-time peripheral device drivers.
B. To swap processes out of main memory to secondary storage (and vice versa) to control the degree of multiprogramming.
C. To assign processes directly to an available CPU core.
D. To control the initial BIOS POST test routines.
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Correct Answer: Option B

Explanation:
The medium-term scheduler removes processes from main memory temporarily (swapping out) to reduce the degree of multiprogramming and manage memory constraints.
This question belongs to: Computer Operating Systems
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