Which Windows shortcut instantly minimizes all open program windows and displays the desktop interface screen? MCQ with Answer and Explanation
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Question #1
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Which Linux command is used to display the first few lines of a file?
Correct Answer: Option A
Explanation:
head shows the first 10 lines by default; tail shows the last lines.
head shows the first 10 lines by default; tail shows the last lines.
This question belongs to:
Computer
Operating Systems
Question #2
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In Android, the 'back stack' is used to:
Correct Answer: Option C
Explanation:
Android uses a back stack to keep track of activities launched; pressing back pops the top activity.
Android uses a back stack to keep track of activities launched; pressing back pops the top activity.
This question belongs to:
Computer
Operating Systems
Question #3
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Which mechanism allows an operating system to simulate more memory than the computer physically contains by transferring data temporarily to secondary storage?
Correct Answer: Option C
Explanation:
Virtual memory combines physical RAM with temporary space on the hard drive (paging/swap file) to let the system handle larger memory loads than physical RAM capacity allows.
Virtual memory combines physical RAM with temporary space on the hard drive (paging/swap file) to let the system handle larger memory loads than physical RAM capacity allows.
This question belongs to:
Computer
Operating Systems
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