Class 11th Computer Science MCQ (Objective Question)

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Class 11th Computer Science MCQ (Objective Question)

1. Second-generation computer used –

• Transistor instead of vacuum tubes
• Integrated circuitry
• Vacuum tubes instead of an electromechanical device
• None of these.

2 . Who invented the adding machine?

• Gottfried Leibnitz
• Blaise Pascal
• John Napier
• None of these

3. The first electronic computer was developed in the year –

• 1966
• 1946
• 1876
• 1846

4 . How many unique symbols are there Hexadecimal number system?

• 16
• 12
• 10
• 8

5. How many bytes are these in 1 kilobyte?

• 90
• 145
• 8
• 1024

6. Which of the following is the default start mode for windows?

• Safe mode
• Normal mode
• Command prompt
• None of these

7. The file system ‘ NTFS ‘ stands for

• Non-Terminated File System
• New Technology File System
• Never Terminate File System
• New Type File System

8. …… is the layer of a computer system between the and are and the user –

• Operating System,
• System environment
• Operating environment
• None of these

9. Which of the following device can store large

• Zip Disk
• CD Rom,
• Hard Disk
• Floppy Disk

10. which one is a non – impact printer?

• Drum printer
• Dot printer
• Thermal printer
• Line printer

11. Who can display information on a computer?

• Screen
• Monitor
• Screen & Monitor
• None of these

12. In C ++, (II)  symbol is used to –

• Comment
• Execute
• Compile
• None of these.

13. The extension of C ++  is –

• C ++
• CPP
• CP
• C

14. All header files end with –

• .n
• .h
• .hd
• None of these

15. The data type that is not composed of other data types is known as –

• Derived data types
• Composed data types
• Fundamental data types
• None of these

16. How many types are there in increment/decrement operators?

• 4
• 3
• 2
• 1

17. Logical operator AND is denoted by –

• |
• ||
• &
• &&

18. Which operator has the lowest precedence?

• =
• ,
• ?;
• +

19. Which operator is having the highest precedence?

• Equality
• Shift
• Unary
• Postfix

20. Object of an array is called as –

• Functions of an array
• Indexes of an array
• Elements of an array
• All of these