1. How many bytes are in 1 Kilobyte (KB)?

A. 1000 bytes B. 1024 bytes C. 8 bytes D. 8192 bytes

2. To convert 4 megabytes (MB) into bytes, which operation is performed?

A. 4 ÷ 1024 × 1024 B. 4 × 1024 × 1024 C. 4 × 1024 ÷ 1024 D. 4 ÷ 1024 ÷ 1024

3. How many bytes are there in 4 Megabytes (Mb)?

A. 4,000,000 bytes B. 4,096,000 bytes C. 4,194,304 bytes D. 4,500,000 bytes

4. Which of the following is NOT a characteristic of the second generation of computers?

A. Used vacuum tubes B. Used transistors C. Faster and more reliable than the first generation D. Allowed assembly and high-level languages

5. What determines the quality of a scan from a scanner?

A. CPU speed and memory size B. Spatial resolution and colour resolution C. Data transfer rate and file size D. File format and pixel aspect ratio

6. Which of the following storage devices can have a capacity of approximately 4.7 Gigabytes?

A. Diskette B. Compact Disc (CD) C. Digital Video Disk (DVD) D. Flash disk

7. Which coding scheme uses 8 bits to represent numbers, letters, and special characters?

A. Binary Coded Decimal (BCD) B. American Standard Code for Information Interchange (ASCII) C. Extended Binary Coded Decimal Interchange Code (EBCDIC) D. Morse Code

8. What is the smallest unit of data in a computer that can store either 0 or 1?

A. Byte B. Bit C. Kilobyte D. Nibble

9. Which method of data processing allows users to submit jobs to be processed over a period before execution?

A. Real-time processing B. Batch processing C. Time-sharing D. Distributed processing

10. What is the main purpose of a computer network?

A. To isolate computers from each other B. To connect computer systems for sharing resources C. To increase the processing speed of a single computer D. To store large amounts of data in one location

11. What is the decimal equivalent of the binary number 01100100?

A. 90 B. 100 C. 110 D. 64

12. How many bits are typically combined to make one byte?

A. 4 bits B. 6 bits C. 8 bits D. 16 bits

13. Given 68,719,476,736 bits, what is its equivalent in Gigabytes (Gb)?

A. 4 Gb B. 6 Gb C. 8 Gb D. 10 Gb

14. Which of the following best describes the term "node" in a computer network?

A. A type of cable used to connect computers B. A program that manages network permissions C. An individual computer system connected within the network D. A storage device shared across the network

15. What is 4096 Gigabytes (Gb) converted into Terabytes (Tb)?

A. 2 Tb B. 4 Tb C. 8 Tb D. 16 Tb

16. What type of processing allows multiple users to interact with a computer system independently at the same time?

A. Real-time processing B. Batch processing C. Time-sharing D. Offline processing

17. Which number system has a base of 2?

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

18. In binary-to-denary conversion, what does the binary number 01100100 equal?

A. 64 B. 68 C. 100 D. 110

19. What does the logic unit in an ALU do?

A. Processes arithmetic calculations B. Performs logical operations like comparisons C. Manages program instructions D. Controls input/output devices

20. What is the result of converting 3.5 Mb into bits?

A. 2,985,984 bits B. 29,360,128 bits C. 350,000 bits D. 3,500,000 bits

21. Which of the following is considered a basic unit of storage in computing?

A. Pixel B. Byte C. Frame D. Bitrate

22. How many characters are used for control characters like return and tab in ASCII?

A. 32 B. 20 C. 50 D. 26

23. Which of the following statements is TRUE about a bit?

A. A bit can store multiple values simultaneously. B. A bit is made up of 8 bytes. C. A bit can either be 0 or 1. D. A bit stores alphabets only.

24. What is the total number of characters in the ASCII character set?

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

25. What processing method allows users to submit data over a period before processing occurs?

A. Time-sharing B. Batch Processing C. Real-time Processing D. Parallel Processing

26. Which formula is used to convert Megabytes (Mb) to bits?

A. \( \text{Mb} \times 1024 \times 1024 \times 8 \) B. \( \text{Mb} \div 1024 \) C. \( \text{Mb} \times 1000 \) D. \( \text{Mb} \times 8 \)

27. What is the binary representation of the decimal number 94?

A. 01011110 B. 10010110 C. 10111100 D. 01110010

28. How do you convert from a smaller unit to a larger unit in computer storage?

A. Multiply by 1024 for each step B. Divide by 1024 for each step C. Add 1024 for each step D. Subtract 1024 for each step

29. What is the base of the hexadecimal number system?

A. 8 B. 10 C. 12 D. 16

30. How many characters can a standard diskette store?

A. 1.44 million B. 700 million C. 650 million D. 4.7 million

31. Which part of the computer carries out arithmetic and logical operations?

A. Control Unit B. Memory Unit C. Arithmetic Logic Unit (ALU) D. Input Unit

32. What is a node in a computer network?

A. A communication cable B. A network protocol C. A connected computer system D. A type of data packet

33. What type of computer processing method processes data immediately and generates results instantly?

A. Batch Processing B. Real-time Processing C. Time-sharing D. Distributed Processing

34. What is the base and digits of the octal number system?

A. Base 2, digits 0-1 B. Base 8, digits 0-7 C. Base 10, digits 0-9 D. Base 16, digits 0-15

35. Which type of software performs data transfer, file conversion, sorting, and file maintenance?

A. Utility Software B. Application Software C. Operating System D. Compiler

36. What is stored in primary memory?

A. Software databases only B. Temporary running programs and data C. External backups D. Printer settings

37. What is the rule when converting from a smaller unit to a larger unit in data measurement?

A. Multiply B. Divide C. Add D. Subtract

38. Which of the following is NOT a common number system used in computing?

A. Binary B. Octal C. Decimal D. Quaternary

39. What does CCD stand for in scanners and digital cameras?

A. Charge Coupled Device B. Computer Control Device C. Central Coding Device D. Control Conversion Device

40. What does the abbreviation “Mb” stand for in data measurement?

A. Megabytes B. Megabits C. Millibits D. MilliBytes

41. Which unit of the ALU performs arithmetic operations such as addition and subtraction?

A. Logic Unit B. Arithmetic Unit C. Control Unit D. Memory Unit

42. How is a real number with a decimal point typically stored in a computer?

A. As a binary string with no special notation B. Using scientific notation separated into mantissa and exponent C. As a hexadecimal value D. Using ASCII text codes

43. When converting from a larger unit to a smaller unit, what operation should be performed?

A. Divide B. Add C. Multiply D. Subtract

44. Which formula correctly converts bytes to Megabytes?

A. \( \text{Bytes} \times 1024 \times 1024 \) B. \( \text{Bytes} \div (1024 \times 1024) \) C. \( \text{Bytes} \times 8 \) D. \( \text{Bytes} \div 8 \)

45. To convert a binary number to a decimal number, you:

A. Multiply each digit by powers of 10 and sum B. Add the values of columns where a 1 appears based on powers of 2 C. Subtract each digit from 2 raised to the power of the digit’s position D. Divide each digit by the base and multiply by the place value

46. What characteristic distinguishes the second generation of computers from the first?

A. Use of vacuum tubes B. Use of transistors C. Use of integrated circuits D. Use of punch cards

47. Which unit of the ALU performs logical operations such as comparisons?

A. Arithmetic Unit B. Logic Unit C. Control Unit D. Input Unit

48. What is the process of changing data from one unit to another called?

A. Data encoding B. Unit conversion C. Data compression D. Data mining

49. When converting data units, moving two places to the right from Kilobytes to Gigabytes requires dividing by:

A. 1000 twice B. 1024 twice C. 1024 once D. 8 twice

50. What is the base and digit count of the hexadecimal number system?

A. Base 8 and digits 0-7 B. Base 10 and digits 0-9 C. Base 16 and digits 0-9 plus A-F D. Base 2 and digits 0-1