In Linux, what does the command 'echo $SHELL' display? MCQ with Answer and Explanation
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Question #1
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Which Linux command shows the list of mounted file systems?
Correct Answer: Option C
Explanation:
mount without arguments displays all currently mounted file systems; df also shows mounts but with usage.
mount without arguments displays all currently mounted file systems; df also shows mounts but with usage.
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Computer
Operating Systems
Question #2
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What is the purpose of the Android 'Permission System'?
Correct Answer: Option A
Explanation:
Android permissions restrict access to dangerous data and system features; users grant permissions at runtime.
Android permissions restrict access to dangerous data and system features; users grant permissions at runtime.
This question belongs to:
Computer
Operating Systems
Question #3
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Which of the following is an example of a real-time operating system (RTOS)?
Correct Answer: Option D
Explanation:
VxWorks is a real-time OS used in embedded systems requiring deterministic response times; general-purpose OSes are not RTOS.
VxWorks is a real-time OS used in embedded systems requiring deterministic response times; general-purpose OSes are not RTOS.
This question belongs to:
Computer
Operating Systems
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