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.
Q181. What does ACID in databases stand for?
Atomicity, Consistency, Isolation, Durability
Atomicity, Concurrency, Isolation, Data
Accuracy, Consistency, Integrity, Durability
Access, Control, Integrity, Data
Show answer and explanation
Correct answer: A. Atomicity, Consistency, Isolation, Durability
ACID guarantees reliable transactions.
Q182. Which of the following is an output device?
Mouse
Monitor
Scanner
Keyboard
Show answer and explanation
Correct answer: B. Monitor
A monitor displays output.
Q183. What does HTML stand for?
HyperText Making Language
HyperTransfer Markup Language
HyperText Markup Language
HighText Markup Language
Show answer and explanation
Correct answer: C. HyperText Markup Language
HTML structures web pages.
Q184. Which was the first electronic general-purpose computer?
UNIVAC
EDSAC
Mark I
ENIAC
Show answer and explanation
Correct answer: D. ENIAC
ENIAC was completed in 1945.
Q185. Which device is both input and output?
Mouse
Touchscreen
Speaker
Printer
Show answer and explanation
Correct answer: B. Touchscreen
A touchscreen takes input and displays output.
Q186. Who is known as the father of the computer?
Bill Gates
Steve Jobs
Charles Babbage
Alan Turing
Show answer and explanation
Correct answer: C. Charles Babbage
Babbage designed the Analytical Engine.
Q187. What is the function of a motherboard?
Connects all components of the computer
Stores programs only
Displays output
Cools the CPU
Show answer and explanation
Correct answer: A. Connects all components of the computer
The motherboard hosts CPU, RAM and peripherals.
Q188. In MS Word, which feature is used to check spelling and grammar?
Review tab
Home tab
References tab
View tab
Show answer and explanation
Correct answer: A. Review tab
Spelling & Grammar is in Review.
Q189. Which key combination opens Task Manager?
Ctrl + P
Alt + F4
Ctrl + Alt
Ctrl + Shift + Esc
Show answer and explanation
Correct answer: D. Ctrl + Shift + Esc
Ctrl+Shift+Esc opens Task Manager.
Q190. What is cloud computing?
A type of antivirus
Using remote servers over the Internet to store and process data
A weather prediction tool
A programming language
Show answer and explanation
Correct answer: B. Using remote servers over the Internet to store and process data
Cloud computing delivers services over the Internet.
