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Computer Science 9th Class English Medium Online Test MCQs With Answers
Question # 1
What does ADC represents?
Choose an answer
Analog Digital Conversation
Analog Digital Conversion
Analog Digital Convenient
All of these
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Question # 2
Which software is used to enhance system performance and security?
Choose an answer
Operating system
Device drivers
Utility software
Application software
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Question # 3
The binary value of the letter 'A' is 01000001 and its decimal value is.
Choose an answer
65
66
67
69
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Question # 4
Which of the following is an example of a Natural system.
Choose an answer
Banking System
Human Circulatory system
Transporation System
Computer System
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Question # 5
How may bytes are used to store a typical integer?
Choose an answer
1 byte
2 bytes
4 bytes
8 bytes
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Question # 6
CU stand for...............
Choose an answer
Circuitry Unit
Central Unit
Control Unit
None of these
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Question # 7
How does the Von Neumann architecturer differ from the Harvard architecture?
Choose an answer
Von Neumannhas separate memery for data and instructions, while Harvard shares the same memory.
Von Neumann stores data and instuctions in the same memory
Von Neumann has no control unit while Harvard does
Von Neumann is used in modern processors, while Harvard is outdated
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Question # 8
Which of the following is a example of preventive maintenance for a computer system.
Choose an answer
Replacing a faulty hard drive
Removing malware after infection
Restarting the sytem when it freezes
Applying software updaes regularly
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Question # 9
1 GB = (1,024) MB or............bytes.
Choose an answer
(1,024)
5
bytes
(1,024)KB or (1,024)
2
8
(1,024)
3
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Question # 10
Which dterm describe software that is designed to adapt to changes in user needs?
Choose an answer
Portable software
Flexibel software
Robust software
Configurable software
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Question # 11
Binary Arithmetic operations.use.................?
Choose an answer
Addition
Subtraction
Multiplication
All of these
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Question # 12
In the single precision, how many bits are used for the exponent.
Choose an answer
23 bits
11 bits
8 bits
52 bits
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Question # 13
Which of the following is an example of ensuring data integity through troubleshooting.
Choose an answer
Updating the operating system regularly
Identifyng a softwre bug that causes incorrect database results.
Using a ooling apad to prevent laptop overheating
Updating the operating system regularly
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