Challenge your competence level in computers, computing, algorithms, hardware and software with these Computer science questions and answers.
What is the shortcut for performing warm booting ?
by pressing the Ctrl + Alt keys simultaneouslyy pressing the Ctrl + Alt keys simultaneously
by pressing the Ctrl + Alt + F1 keys simultaneously
by pressing the Ctrl + Del keys simultaneously
by pressing the Ctrl + Alt + Del keys simultaneously
Correct answer is D
Warm booting refers to the process of restarting a computer system which is already on. This can be done by pressing the Ctrl + Alt + Del keys simultaneously. This is a common shortcut for warm booting in many operating systems
The first computer made available for commercial use was
UNIVAC
EDSAC
Mark-1
ENIAC
Correct answer is A
On June 14, 1951, the U.S. Census bureau dedicates UNIVAC(Universal Automatic Computer), the first commercially produced electronic digital computer the US
The last cycle of data processing where data and information are preserved for future is called
processing
recording
storage
output
Correct answer is C
The last cycle of data processing where data and information are preserved for future use is called 'storage'. This is the phase where data or information is saved either temporarily or permanently for future use. The 'output' is the result of data processing but not necessarily preserved for future use. 'Processing' is the action of manipulating data. 'Record' is a piece of stored information
Which of the following does not replicate itself in an infected computer?
spyware
worm
trojan horse
virus
Correct answer is C
trojan horse is a malicious software program that hides inside other programs, trojan horse does not usually spread by themselves
Which of the following can be used to select the entire document ?
Ctrl + K
Ctrl + A
Shift + A
Alt + F5
Correct answer is B
The keyboard shortcut 'Ctrl + A' is used to select the entire document in most word processing software. This command selects all text or other content in the document
The default file extension for PowerPoint version 2007 and newer is ?
.ppxt
.pps
.ppt
.pptx
Correct answer is D
The default file extension for PowerPoint version 2007 and newer is .pptx. This extension stands for PowerPoint Open XML, which is a file format used by PowerPoint 2007 and newer for saving presentations
what is the first computing machine invented ?
slide rule
Pascal calculator
Napier bones
Abacus
Correct answer is D
The Abacus was invented between 2700 and 2300 BC, it is the first computing machine known to mankind
what is the first computing machine invented ?
slide rule
Pascal calculator
Napier bones
Abacus
Correct answer is D
The Abacus was invented between 2700 and 2300 BC, it is the first computing machine known to mankind
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