Computer knowledge is tested in jobs ranging from clerical posts to IT positions. Practice MCQs on computer fundamentals, hardware, software, MS Office, networking, internet, databases and programming concepts, and see your score as soon as you finish.
Q161. What is the full form of BIOS?
Base Input Output Software
Basic Input Output System
Basic Internal Operating System
Binary Input Output System
Show answer and explanation
Correct answer: B. Basic Input Output System
BIOS starts the computer at boot.
Q162. Which Excel function finds the average?
AVG
MID
MEAN
AVERAGE
Show answer and explanation
Correct answer: D. AVERAGE
AVERAGE returns the arithmetic mean.
Q163. What is the worst-case time complexity of bubble sort?
O(n log n)
O(log n)
O(n^2)
O(n)
Show answer and explanation
Correct answer: C. O(n^2)
Bubble sort compares adjacent pairs repeatedly.
Q164. Who developed the C programming language?
Bjarne Stroustrup
Dennis Ritchie
James Gosling
Guido van Rossum
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Correct answer: B. Dennis Ritchie
Ritchie created C at Bell Labs.
Q165. Which extension is used for compressed archives?
.mp3
.zip
.docx
.png
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Correct answer: B. .zip
.zip compresses files.
Q166. What is the unique hardware address of a network interface called?
URL
MAC address
DNS
IP address
Show answer and explanation
Correct answer: B. MAC address
MAC addresses identify NICs.
Q167. Which shortcut key opens Find and Replace?
Ctrl + G
Ctrl + R
Ctrl + F
Ctrl + H
Show answer and explanation
Correct answer: D. Ctrl + H
Ctrl+H opens Replace.
Q168. Which function key opens Save As in Word?
F7
F12
F5
F2
Show answer and explanation
Correct answer: B. F12
F12 opens Save As.
Q169. What does the 'main()' function represent in C?
