5.MCQ Data Representation

 

1. To perform calculation on stored data computer uses ……….. number system. ISBI Clerk 2009] 

(1) decimal

(2) hexadecimal 

(3) octal

(4) binary 

(5) None of these 

2. A hexadecimal number is represented by 

(1) three digits

(2) four binary digits 

(3) four digits

(0) All of these 

(5) None of these 

3. Decimal number system is the group of ………. numbers. 

(1) 0 or 1

(2) 0 to 9 

(3) 0 to 7

(4) 0 to 9 and A to F 

(5) None of these 

4. Hexadecimal number system has ………. base.

(1) 2 

(2) 8 

(3) 10

(4) 16.

(5) None of these 

5. Hexadecimal number system consists 

(1) 0 to 9

(2) A to F 

(3) Both ‘1’ and ‘2 

(4) Either ‘1’ or 2 

(5) Neither ‘1’ or ‘2

6. Which of the following statements is true?

(1) 1 gigabyte is equivalent to 1024 kilobyte 

(2) Mb stands for megabyte 

(3) Octal number system having 8 digits

(4) Decimal number system cannot contain binary digits 

(5) None of the above 

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

[BOB Clerk 2010 ]

(1) 8 bytes

(2) 8 KB 

(3) 8 character 

(4) 8 bits

(5) None of these 

8. Decimal equivalent of (1111)2 is ….[IBPS Clerk 2013] 

(1) 11 

(2) 10 

(3) 1 

(4) 15 

(5) 13

9. The number system based on ‘0’ and ‘1’ only is known as 

(1) binary system

(2) barter system 

(3) number system 

(4) hexadecimal system

(5) special system 

10. Which of the following statements is valid

(1) 1 KB = 1024 bits 

(2) 1 MB = 2048 bits 

(3) 1 MB = 1000 kilobits 

(4) 1 KB = 1000 bytes

(5) 1 MB = 1024 kilobytes 

11. What is the value of the binary number 101? 

(1)3

(2) 5 

(3) 6

(4) 101 

12. Which of the following is an example of a binary number? [IBPS Clerk 2011] 

(1) 6AH1

(2) 100101 

(3) 005

(4) ABCD 

(5) 23156 

13. Which of the following is not a binary number? [IBPS Clerk 2011] 

(1) 001

(2) 101 

(3) 202

(4) 110 

(5) 011 

14. Which of the following is Octal number equivalent to binary number (110101)2

(1) 12

(2) 65 

(3) 56

(4) 1111 

(5) 00 

15. Which of the following is hexadecimal number equivalent to binary number ( 1111)(1001)2

(1) 9F

(2) FF 

(3) 99

(4) F9 

(5) FC

16. Which of the following is a binary number equivalent to octal number (431)8,? 

(1) (100011001)2 

(2) (.100011001)2 

(3) (100110100)2 

(4) (.100110001)2

(5) (1000.11001)2 

17. Which of the following is an octal number equal to decimal number (896)10

(1) 0061

(2) 6001 

(3) 1006

(4) 1600 

(5) 0601 

18. Which of the following is invalid hexadecimal number? 

(1) A0XB

(2) A0F6 

(3) 4568

(4) ACDB 

(5) 60AC 

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

(1) 197

(2) 917 

(3) 791

(4) 971 

(5) 719 

20. There are how many types of number system? 

(1) One

(2) Two 

(3) Three

(4) Four

(5) five

21. The octal system [IBPS Clerk 2011] 

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

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

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

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

(5) None of the above 

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

(1) 4

(2) 16 

(3) 64

(4) 256 

(5) 512 

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

(1) penta

(2) octal 

(3) hexa

(4) septa 

(5) binary 

24. What type of information system would be recognised by digital circuits? [SSC CGL 2013] 

(1) Hexadecimal system 

(2) Binary system 

(3) Both ‘l’ and ‘2’

(4) Only roman system 

25. Which of the following is not a computer code?

(1) EBCDIC 

(2) ASCII 

(3) CISC 

(4) UNICODE

(5) None of these 

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

(1) ASCII

(2) UNICODE 

(3) EBCDIC

(4) ANSIC

(5) None of these 

27. The most widely used code that represents each character as a unique 8-bit code is [IBPS Clerk 2011 

(1) ASCII

(2) UNICODE 

(3) BCD 

(4) EBCDIC 

(5) None of the above

28. The binary equivalent of decimal number 98 is [1BPS Clerk 2012] 

(1) 1110001

(2) 1110100 

(3) 1100010

(4) 1111001 

(5) None of these 

29. A hexadigit can be represented by [IBPS Clerk 2012] 

(1) three binary (consecutive) bits 

(2) four binary consecutive) bits 

(3) eight binary (consecutive) bits 

(4) sixteen binary (consecutive) bits

(5) None of the above 

30. MSD refers as

(1) Most Significant Digit 

(2) Many Significant Digit 

(3) Multiple Significant Digit 

(4) Most Significant Decimal

(5) None of the above 

31. Binary system is also called

(1) base one system 

(2) base two system 

(3) base system 

(4) binary system 

(5) None of these sinary system can

32. The negative numbers in the binary system can be represented by 

(1) Sign magnitude 

(2) 1’s compliment 

(3) 2’s compliment 

(4) All of these

(5) None of these 

33. ASCII code for letter A is 

(1) 1100011

(2) 1000001 

(3) 1111111

(4) 0010011 

(5) None of these 

34. ASCII stands for [IBPS Clerk 2011 ]

(1) American Special Computer for Information Interaction 

(2) American Standard Computer for Information Interchange 

(3) American Special Code for Information Interchange 

(4) American Special Computer for Information Interchange 

(5) American Standard Code for Information Interchange 

35. Today’s mostly used coding system is/are 

(1) ASCII

(2) EBCDIC 

(3) BCD

(4) Both 1 and 2 

(5) All of these