Computer MCQs (page 48 of 48)
Computer basics, hardware, software, networking, the internet, file formats, shortcuts and the people behind modern computing.
954 questions. Select an option to check your answer, or open "Show answer". Showing 941–954.
- 941.
A file with the extension .c is usually:
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Answer: C. C source code
The .c extension is used for C source code.
- 942.
A file with the extension .js is usually:
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Answer: B. JavaScript code
The .js extension is used for JavaScript code.
- 943.
A file with the extension .css is usually:
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Answer: A. a style sheet for web pages
The .css extension is used for a style sheet for web pages.
- 944.
A file with the extension .apk is usually:
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Answer: A. an Android app package
The .apk extension is used for an Android app package.
- 945.
A file with the extension .iso is usually:
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Answer: D. a disk image
The .iso extension is used for a disk image.
- 946.
A file with the extension .epub is usually:
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Answer: C. an e-book
The .epub extension is used for an e-book.
- 947.
A file with the extension .txt is usually:
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Answer: D. a plain text file
The .txt extension is used for a plain text file.
- 948.
A file with the extension .csv is usually:
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Answer: D. comma-separated values data
The .csv extension is used for comma-separated values data.
- 949.
Which logic gate gives 1 only when all inputs are 1?
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Answer: B. AND
The AND gate gives 1 only when all inputs are 1.
- 950.
Which logic gate gives 1 when at least one input is 1?
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Answer: C. OR
The OR gate gives 1 when at least one input is 1.
- 951.
Which logic gate reverses (inverts) its single input?
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Answer: D. NOT
The NOT gate reverses (inverts) its single input.
- 952.
Which logic gate gives 0 only when all inputs are 1?
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Answer: C. NAND
The NAND gate gives 0 only when all inputs are 1.
- 953.
Which logic gate gives 1 only when all inputs are 0?
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Answer: B. NOR
The NOR gate gives 1 only when all inputs are 0.
- 954.
Which logic gate gives 1 when the inputs are different?
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Answer: B. XOR
The XOR gate gives 1 when the inputs are different.