Computer Studies covers general knowledge of computers, computing terms, and technologies. It focuses on building interest and confidence in using computers.
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Question 51:
Using Boolean identities, reduce the given Boolean expression:
A(A+1) + A(B+0) + C.1
Options:
A) A + B + C
B) A.B.C
C) A.B + C
D) A + C
Show Answer
The correct answer is D .
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Question 52:
Analog, digital and hybrid computers are classification of computers based on
Options:
A) the type of data-handling techniques
B) the purpose
C) the size
D) the functionality
Show Answer
The correct answer is A .
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Question 53:
Numerous files are referred to as _____________
Options:
A) Files
B) Folder
C) Memo
D) Drafts
Show Answer
The correct answer is B .
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Question 54:
Which of the following is an example of output device
Options:
A) Keyboard
B) Mouse
C) speaker
D) microphone
Show Answer
The correct answer is C .
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Question 55:
Translators are type of ?
Options:
A) System software
B) Operating system
C) Utility programs
D) Application software
Show Answer
The correct answer is A .
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Question 56:
Typically, an ATM is used for
Options:
A) record keeping
B) budget making
C) watching movies
D) withdrawing cash
Show Answer
The correct answer is D .
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Question 57:
Which among the following generation computers had expensive operation cost?
Options:
A) First
B) Second
C) Third
D) Fourth
Show Answer
The correct answer is A .
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Question 58:
Which of the following does not replicate itself in an infected computer?
Options:
A) spyware
B) worm
C) trojan horse
D) virus
Show Answer
The correct answer is C .
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Question 59:
When does the output of a NOR gate =0?
Options:
A) whenever 0 is present at input
B) only when all input =0
C) whenever 1 is present at input
D) only when all input =1.
Show Answer
The correct answer is C .
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Question 60:
System software has which major function?
Options:
A) Giving utility
B) making navigation easier for user
C) controlling the computer system
D) maintain the system
Show Answer
The correct answer is C .