In Linux, the '/etc/fstab' file contains: MCQ with Answer and Explanation

Question
In Linux, the '/etc/fstab' file contains:
A. File system mount points and options
B. Network configuration
C. System hostname
D. User account passwords
Answer: Option A
Solution (By JKSSB Mock Tests)
fstab (file systems table) defines how disk partitions and file systems are to be mounted at boot or manually.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which Windows keyboard shortcut instantly locks the active user account profile, requiring a password entry to log back in?
A. Windows Key + L
B. Alt + F4
C. Ctrl + Alt + Delete
D. Windows Key + D
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Correct Answer: Option A

Explanation:
Pressing Windows Key + L signals the desktop shell interface to lock the active session, securing user documents behind the login screen.
This question belongs to: Computer Operating Systems
Question #2
What type of process scheduling algorithm moves tasks between multiple queues based on their execution history and remaining runtime characteristics?
A. Static Priority Array
B. Round Robin Loop
C. First-Come, First-Served
D. Multilevel Feedback Queue
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Correct Answer: Option D

Explanation:
Multilevel Feedback Queues allow tasks to move between queues dynamically based on their CPU usage history, optimizing system response times.
This question belongs to: Computer Operating Systems
Question #3
What type of memory allocation problem occurs when free memory blocks are broken down into tiny, disconnected gaps that are too small to serve new process requests?
A. External Fragmentation
B. Deadlock Allocation
C. Internal Fragmentation
D. Virtual Paging Fault
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Correct Answer: Option A

Explanation:
External fragmentation occurs when total free memory space exists to satisfy a allocation request, but it is split up non-contiguously into tiny pockets.
This question belongs to: Computer Operating Systems
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