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Online Tests
Computer Science 9th Class English Medium Online Test MCQs With Answers
Question # 1
Which term reers to the process of restoring data froma backup?
Choose an answer
Data Retrieval
Data Validation
Data Restoration
Data Synchronization
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Question # 2
1 TB = (1,024) GB or ........................bytes.
Choose an answer
(1,024)
4
(1,024)
5
bytes
(1,024) KB ot (1,024)
2
(1,024)
3
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Question # 3
In an RGB color model, what does RGB stand for?
Choose an answer
Red. Green Brown
Red, Gray, Black
Red, Green, Blue
Right ,Green, Blue
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Question # 4
Extended ASCII includes....................characters?
Choose an answer
64
256
128
None of these
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Question # 5
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 # 6
Which of the following is a key characteristic of the Von Neumann architecture?
Choose an answer
separate memory for instructions and data
Instructions and data are data in the same memory
Data is stored in a separate storage unit from instructions
No need for a central processing Unit (CPU)
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Question # 7
What is the key difference between natural and artificial systems?
Choose an answer
Natural systems are created by humans , while artifical system exist naturally
Natural systems exist naturally, while artificial systems are man -made
Natural systems are always simple while artificial systems are complex.
Natural systmes require programming, while artificial systems do not.
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Question # 8
What is the decmimal equivalent of the binary number 1101?
Choose an answer
13
11
12
14
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Question # 9
What role do device drivers play ina computer system.
Choose an answer
Enhane Graphic performance
Create presentations
Manage Files
Facilittate communication between hardware devices and the operating system
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Question # 10
Single Precision use.....bits?
Choose an answer
30
31
32
None of these
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Question # 11
Which signals are in continues form?
Choose an answer
Digital
Analog
Both a and b
None of these
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Question # 12
Why is troubleshooting important in computing systems?
Choose an answer
It ensures hardware compoents are alsyws up to data
It prevents the need for data backups
It eliminates the need for software updates
It helps keep systems runnign smoothly and securely
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Question # 13
Base of Octal Number system is.
Choose an answer
2
8
10
16
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