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1. What is the base value of the binary number system?

A) 2
B) 8
C) 10
D) 16

ANSWER= A) 2

2. Which encoding scheme is used to represent characters of almost all languages of the world?

A) ASCII
B) ISCII
C) UTF-8
D) UNICODE

ANSWER= D) UNICODE

3. How many bits are used in the ASCII encoding scheme?

A) 7 bits
B) 8 bits
C) 16 bits
D) 32 bits

ANSWER= A) 7 bits

4. What is the hexadecimal equivalent of the binary number (1010 1100 . 0101 1100)2?

A) AC.5C
B) B4.3E
C) A2.C5
D) D8.7F

ANSWER= A) AC.5C

5. Which standard encoding scheme was developed in India during the mid- 1980s?

A) ASCII
B) ISCII
C) UNICODE
D) UTF-8

ANSWER= B) ISCII

6. What is the binary representation of the ASCII code for the character 'A'?

A) 1000001
B) 1010100
C) 1100001
D) 1110001

ANSWER= A) 1000001

7. How many different characters can be encoded using 7-bit ASCII code?

A) 64
B) 128
C) 256
D) 512

ANSWER= B) 128

8. Which number system is used to simplify binary coded representation by grouping 3 bits?

A) Binary
B) Decimal
C) Octal
D) Hexadecimal

ANSWER= C) Octal

9. What is the binary equivalent of the decimal number 122?

A) 1111100
B) 1111001
C) 1111010
D) 1110110

ANSWER= C) 1111010

10. What is the primary advantage of using hexadecimal notation?

A) Easier to remember than binary
B) Uses fewer bits than binary
C) Both A and B
D) None of the above

ANSWER= C) Both A and B

11. What is the base value of the octal number system?

A) 2
B) 8
C) 10
D) 16

ANSWER= B) 8

12. What is the decimal equivalent of the octal number (514)8?

A) 336
B) 328
C) 340
D) 332

ANSWER= D) 332

13. Which encoding scheme is known for representing text in Indian languages?

A) ASCII
B) ISCII
C) UNICODE
D) UTF-8

ANSWER= B) ISCII

14. How many bits are in a byte?

A) 4
B) 8
C) 16
D) 32

ANSWER= B) 8

15. What does UTF-8 stand for?

A) Unicode Transformation Format - 8 bit
B) Unicode Text Format - 8 bit
C) Uniform Text Format - 8 bit
D) Universal Text Format - 8 bit

ANSWER= A) Unicode Transformation Format - 8 bit

16. Which encoding scheme retains all 128 ASCII codes and uses the rest for additional characters?

A) ASCII
B) ISCII
C) UNICODE
D) UTF-8

ANSWER= B) ISCII

17. What is the hexadecimal value for the binary number (11111111,00000000,00000000)?

A) (FF,00,00)
B) (F0,0F,0F)
C) (00,FF,00)
D) (FF,FF,00)

ANSWER= A) (FF,00,00)

18. What is the binary equivalent of the ASCII value for the character 'D'?

A) 1000100
B) 1010001
C) 1100001
D) 1110100

ANSWER= A) 1000100

19. What is the hexadecimal representation of the memory address 1100000011110001?

A) C0F1
B) D1F2
C) C2E1
D) B0A1

ANSWER= A) C0F1

20. How many bits are required for representing each color in RGB color coding?

A) 8 bits
B) 16 bits
C) 24 bits
D) 32 bits

ANSWER= C) 24 bits

21. Which encoding scheme is a superset of ASCII?

A) UTF-8
B) ISCII
C) UNICODE
D) EBCDIC

ANSWER= C) UNICODE

22. What is the full form of ASCII?

A) American Standard Code for Information Interchange
B) American System Code for Information Interchange
C) American Standard Code for Internet Interchange
D) American System Code for Internet Interchange

ANSWER= A) American Standard Code for Information Interchange

23. What is the base value of the decimal number system?

A) 2
B) 8
C) 10
D) 16

ANSWER= C) 10

24. Which encoding scheme provides a unique number for every character, irrespective of the device or operating system?

A) ASCII
B) ISCII
C) UNICODE
D) UTF-8

ANSWER= C) UNICODE

25. What is the decimal equivalent of the hexadecimal number (4D9)16?

A) 1234
B) 1241
C) 1249
D) 1257

ANSWER= C) 1241

26. Which number system uses base 16?

A) Binary
B) Decimal
C) Octal
D) Hexadecimal

ANSWER= D) Hexadecimal

27. What is the octal equivalent of the binary number (10101100.01011)2?

A) 254.26
B) 245.36
C) 234.25
D) 255.46

ANSWER= A) 254.26

29. Which encoding scheme is used for compact representation of color codes?

A) ASCII
B) ISCII
C) UNICODE
D) Hexadecimal

ANSWER= D) Hexadecimal

30. What is the decimal equivalent of the binary number (1010111)2?

A) 85
B) 87
C) 89
D) 91

ANSWER= B) 87

31. How many characters can be represented using an 8-bit encoding scheme?

A) 128
B) 256
C) 512
D) 1024

ANSWER= B) 256

32. What is the full form of ISCII?

A) Indian Script Code for Information Interchange
B) Indian System Code for Information Interchange
C) Indian Standard Code for Internet Interchange
D) Indian System Code for Internet Interchange

ANSWER= A) Indian Script Code for Information Interchange

33. What is the base value of the hexadecimal number system?

A) 2
B) 8
C) 10
D) 16

ANSWER= D) 16

34. Which encoding scheme is used to represent more characters beyond the basic ASCII set?

A) UTF-8
B) ISCII
C) UNICODE
D) EBCDIC

ANSWER= C) UNICODE

35. What is the binary equivalent of the hexadecimal number (3A7)16?

A) 1101100000
B) 1100111000
C) 1010101111
D) 1110100111

ANSWER= D) 1110100111

36. What is the octal equivalent of the decimal number (76)10?

A) 104
B) 112
C) 114
D) 116

ANSWER= C) 114

37. How many different characters can be represented using 8-bit encoding?

A) 128
B) 256
C) 512
D) 1024

ANSWER= B) 256

38. What is the full form of UNICODE?

A) Universal Code for Information Interchange
B) Uniform Code for Information Interchange
C) Unified Code for Information Interchange
D) None of the above

ANSWER= C) Unified Code for Information Interchange

39. Which number system is used for efficient representation of IP addresses?

A) Binary
B) Decimal
C) Octal
D) Hexadecimal

ANSWER= D) Hexadecimal

40. What is the base value of the binary number system?

A) 2
B) 8
C) 10
D) 16

ANSWER= A) 2

41. What is the binary equivalent of the decimal number (65)10?

A) 1000001
B) 1000010
C) 1100101
D) 1100110

ANSWER= A) 1000001

42. What is the decimal equivalent of the octal number (23)8?

A) 18
B) 19
C) 20
D) 21

ANSWER= C) 19

43. Which encoding scheme can represent over a million characters?

A) ASCII
B) ISCII
C) UNICODE
D) UTF-8

ANSWER= C) UNICODE

44. What is the binary equivalent of the ASCII value for the character 'C'?

A) 1000011
B) 1000100
C) 1000111
D) 1001000

ANSWER= A) 1000011

45. What is the hexadecimal representation of the binary number (110110101011)2?

A) DAB
B) DBA
C) DBB
D) DAA

ANSWER= A) DAB

46. How many bits are used in a UNICODE encoding scheme?

A) 8 bits
B) 16 bits
C) 24 bits
D) 32 bits

ANSWER= D) 32 bits

47. Which number system is commonly used in computer programming?

A) Binary
B) Decimal
C) Octal
D) Hexadecimal

ANSWER= A) Binary

48. What is the binary equivalent of the hexadecimal number (2F)16?

A) 101111
B) 110010
C) 111100
D) 110111

ANSWER= A) 101111

49. What is the octal equivalent of the binary number (1101011)2?

A) 153
B) 154
C) 155
D) 156

ANSWER= A) 153

50. What is the binary representation of the ASCII code for the character 'B'?

A) 1000001
B) 1000010
C) 1000011
D) 1000100

ANSWER= B) 1000010