#1. There are how many types of number system?

One

Two

Three

Four

#2. Modern computers represent characters and numbers internally using one of the following number systems.

Penta

Octal

Hexa

Septa

Binary

#3. In the binary language, each letter of the alphabet, each number and each special character is made up of a unique combination of

8 bytes

8 KB

8 characters

8 bits

#4. To perform calculation on stored data computer, uses ……… number system.

decimal

hexadecimal

octal

binary

#5. Which of the following is not a binary number?

001

101

202

110

011

#6. The number system based on ‘0’ and ‘1’ only, is known as

binary system

barter system

number system

hexadecimal system

#7. Binary system is also called

base one system

base two system

base system

binary system

#8. Which of the following is an example of binary number?

6AH1

100101

005

ABCD

23456

#9. Numbers that are written with base 10 are classified as

decimal number

whole number

hexadecimal number

exponential integers

Mantissa

#10. Decimal number system is the group of ………… numbers.

0 or 1

0 to 9

0 to 7

0 to 9 and A to F

#11. The octal system

needs less digits to represent a number than in the binary system

needs more digits to represent a number than in the binary system

needs the same number of digits to represent a number as in the binary system

needs the same number of digits to represent a number as in the decimal system

None of the above

#12. A hexadecimal number is represented by

three digits

four binary digits

four digits

All of these

#13. Hexadecimal number system has ………. base.

2

8

10

16

#14. Hexadecimal number system consists of

0 to 9

A to F

Both ‘1’ and ‘2’

Either ‘1’ or ‘2’

#15. A hexadigit can be represented by

three binary (consecutive) bits

four binary (consecutive) bits

eight binary (consecutive) bits

sixteen binary (consecutive) bits

None of the above

#16. Which of the following is invalid hexadecimal number?

A0XB

A0F6

4568

ACDB

#17. What type of information system would be recognised by digital circuits?

Hexadecimal system

Binary system

Both ‘1’ and ‘2’

Only roman system

#18. The binary equivalent of decimal number 98 is

1110001

1110100

1100010

1111001

None of these

#19. The binary number 10101 is equivalent to decimal number ………….

19

12

27

21

#20. What is the value of the binary number 101?

3

5

6

101

#21. To convert binary number to decimal, multiply the all binary digits by power of

0

2

4

6

#22. Which of the following is a hexadecimal number equal to 3431 octal number?

197

917

791

971

719

#23. The method used for the conversion of octal to decimal fraction is

digit is divided by 8

digit is multiplied by the corresponding power of 8

digit is added with 8

digit is subtracted with 8

#24. MSD refers as

Most Significant Digit

Many Significant Digit

Multiple Significant Digit

Most Significant Decimal

#25. LSD stands for

Long Significant Digit

Least Significant Digit

Large Significant Digit

Longer Significant Decimal

#26. How many values can be represented by a single byte?

4

16

64

256

#27. Which of the following is not a computer code?

EBCDIC

ASCII

CISC

UNICODE

#28. ASCII stands for

American Special Computer for Information Interaction

American Standard Computer for Information Interchange

American Special Code for Information Interchange

American Special Computer for Information Interchange

American Standard Code for Information Interchange

#29. The most widely used code that represents each character as a unique 8-bit code is

ASCII

UNICODE

BCD

EBCDIC

None of these

#30. Today’s mostly used coding system is/are

ASCII

EBCDIC

BCD

Both ‘1’ and ‘2’

#31. In EBCDIC code, maximum possible characters set size is

356

756

556

256

#32. Code ‘EBCDIC’ that is used in computing stands for

Extension BCD Information Code

Extended BCD Information Code

Extension BCD Interchange Conduct

Extended BCD Interchange Conduct

#33. Most commonly used codes for representing bits are

ASCII

BCD

EBCDIC

All of these

#34. The coding system allows non-english characters and special characters to be represented

ASCII

UNICODE

EBCDIC

All of these

#35. Which of the following character set supports Japanese and Chinese fonts?

EBCDIC

ASCII

BC

ECBI

UNICODE

#36. Two inputs A and B of NAND gate have 0 output, if

A is 0

B is 0

both are zero

both are 1

#37. Gate having output 1 only when one of its input is 1 is called

AND

NOT

OR

NOR

#38. Gate is also known as inverter.

OR

NOT

XOR

NAND

#39. The only function of NOT gate is to ……..

Stop signal

Invert input signal

Act as a universal gate

Double input signal

Half input signal

#40. The NAND gate is AND gate followed by ……

NOT gate

OR gate

NOR gate

XOR gate

#41. The NOR gate is OR gate followed by ……..

AND gate

NAND gate

NOT gate

OR gate

XOR gate

#42. The NOR gate output will be high if the two inputs are

00

01

10

11

None of these

#43. Which of following are known as universal gates?

NAND & NOR

AND & OR

XOR & OR

AND

OR

#44. Gate whose output is 0 only when inputs are different is called

XOR

XNOR

NOR

NAND

None of these

DATA REPRESENTATION MCQ Questions and Answers

Results

#1. There are how many types of number system?

#2. Modern computers represent characters and numbers internally using one of the following number systems.

#3. In the binary language, each letter of the alphabet, each number and each special character is made up of a unique combination of

#4. To perform calculation on stored data computer, uses ……… number system.

#5. Which of the following is not a binary number?

#6. The number system based on ‘0’ and ‘1’ only, is known as

#7. Binary system is also called

#8. Which of the following is an example of binary number?

#9. Numbers that are written with base 10 are classified as

#10. Decimal number system is the group of ………… numbers.

#11. The octal system

#12. A hexadecimal number is represented by

#13. Hexadecimal number system has ………. base.

#14. Hexadecimal number system consists of

#15. A hexadigit can be represented by

#16. Which of the following is invalid hexadecimal number?

#17. What type of information system would be recognised by digital circuits?

#18. The binary equivalent of decimal number 98 is

#19. The binary number 10101 is equivalent to decimal number ………….

#20. What is the value of the binary number 101?

#21. To convert binary number to decimal, multiply the all binary digits by power of

#22. Which of the following is a hexadecimal number equal to 3431 octal number?

#23. The method used for the conversion of octal to decimal fraction is

#24. MSD refers as

#25. LSD stands for

#26. How many values can be represented by a single byte?

#27. Which of the following is not a computer code?

#28. ASCII stands for

#29. The most widely used code that represents each character as a unique 8-bit code is

#30. Today’s mostly used coding system is/are

#31. In EBCDIC code, maximum possible characters set size is

#32. Code ‘EBCDIC’ that is used in computing stands for

#33. Most commonly used codes for representing bits are

#34. The coding system allows non-english characters and special characters to be represented

#35. Which of the following character set supports Japanese and Chinese fonts?

#36. Two inputs A and B of NAND gate have 0 output, if

#37. Gate having output 1 only when one of its input is 1 is called

#38. Gate is also known as inverter.

#39. The only function of NOT gate is to ……..

#40. The NAND gate is AND gate followed by ……

#41. The NOR gate is OR gate followed by ……..

#42. The NOR gate output will be high if the two inputs are

#43. Which of following are known as universal gates?

#44. Gate whose output is 0 only when inputs are different is called

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