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Online Tests
Computer Science 9th Class English Medium Online Test MCQs With Answers
Question # 1
In primary and secondary stroages data is stored in the form of.
Choose an answer
Bytes
Bit
Nibble
GB
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Question # 2
What is the primary purpoe of the DNS (Domain Name System) Protocol?
Choose an answer
To assign IP addresses to devices
To map domain names to IP Address
To ensure secure transmission of data
To transfer files over the internet.
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Question # 3
Which of the following decribes the Von neumann architecture's main characteristic?
Choose an answer
Separate memory for data and instructions
Parallel execution of instructions
Single memoery store for both program instructions and data
Multiples CPUs fordifferent tasks
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Question # 4
1 MB =.............bytes
Choose an answer
(1024)
5
bytes
(1024) KB or (1,024)
2
3000
400
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Question # 5
Which numer system has base 16 ?
Choose an answer
Hexa decimal
Decimal
Octal
Binary
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Question # 6
Whcih of the following is an example of identifying a problem in troubleshooting.
Choose an answer
Testing a laptop battery by plugging in the power cord
Noticing that a laptop does not turn on when the power button is pressed
Witting down that a laptop battery was replaced
Coming up with a plan to replace a laptop battery
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Question # 7
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 # 8
Extended ASCII includes....................characters?
Choose an answer
64
256
128
None of these
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Question # 9
Which of the following is an example of a hybrid system (combination of natural and artificial system)?
Choose an answer
Human respiratory system
A weather forecasting system
A dam controlling river water flow
A simple pendulum
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Question # 10
In a half-adder circuit, the carry is generated by which operation?
Choose an answer
XOR operation
AND Operation
OR Operation
NOT Operation
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Question # 11
Basic Arthemetic Operation like addition subtractio are performed by?
Choose an answer
ALU
CU
UDP
All of these
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Question # 12
What is the common taks you can perform using word processing software?
Choose an answer
Organize and aalyze data
Create and edit text documents
Manage hardware resources
Enhance system performance
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Question # 13
OR operation yields 1 output when at least of........of the input is true.
Choose an answer
0
00
1
10
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Question # 14
1 KB= .........bytes
Choose an answer
200
400
300
1024
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Question # 15
Which component of the computer system is responsible for temporarily strong data and instructions while the CPU processes them?
Choose an answer
RAM (Random Access Memory)
ROM(Read -only Memory)
Hard Dis Drive(HDD)
Graphics Processing Unit (GPU)
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Question # 16
Which of the following Boolean expressions represents the OR operation
Choose an answer
A.B
A+B
A
A-B
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Question # 17
Digital system depends on?
Choose an answer
10
00
11
None of these
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Question # 18
Which protocol is used to send emails over the internet?
Choose an answer
POP3 (Post Office Protocol 3)
FTP (File Trnasfer Protocol)
SMTP (Simple Mail Transfer Protocol)
IMAP (Internet Message Access Protocol)
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