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 61:
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 62:
Which of these storage devices can act as a buffer between the CPU and the main memory ?
Options:
A) Hard disk
B) Floppy disk
C) Cache Memory
D) Flash drive
Show Answer
The correct answer is C .
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Question 63:
Which of the following is not a type of logic gate
Options:
A) XOR
B) OR
C) AND
D) DOR
Show Answer
The correct answer is D .
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Question 64:
System software can further be classified into two. Operating software and ______________ software
Options:
A) Utility
B) Storage
C) Anti virus
D) File management system
Show Answer
The correct answer is A .
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Question 65:
Which of the following is not a type of computer network?
Options:
A) VPN
B) CAN
C) WLAN
D) DAN
Show Answer
The correct answer is D .
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Question 66:
Which of the following is used for modulation and demodulation ?
Options:
A) Gateway
B) Protocol
C) Modem
D) Multiplex
Show Answer
The correct answer is C .
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Question 67:
What is the permanent memory built into your computer called?
Options:
A) RAM
B) ROM
C) CPU
D) CD-ROM
Show Answer
The correct answer is B .
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Question 68:
What tells the computer how to use its components?
Options:
A) utility
B) application
C) operating system
D) network
Show Answer
The correct answer is C .
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Question 69:
When does the output of a NAND gate =1?
Options:
A) whenever a 0 is present at an input
B) only when all input =0
C) whenever 1 is present at an input
D) only when all input =1
Show Answer
The correct answer is A .
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Question 70:
Destruction of files for malicious reasons such as access by fraudulent people is classified as being
Options:
A) modified
B) accessed
C) destroyed
D) unauthorized access
Show Answer
The correct answer is D .