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Computer Data Basics Test Online

Mustansar KhanLast Updated: October 15, 2025

Important Computer Data Basics Question and Answer

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Data Basics Practice Test Online With Explanation

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1. Which process combines data from different sources?

Data cleaning

Data visualization

Data compression

Data integration

2. Which component stores data permanently in a computer?

RAM

CPU

Cache

Hard Disk

3. Which of the following is considered volatile data storage?

RAM

Hard disk

SSD

USB drive

4. Which of the following ensures data integrity?

Data loss

Data duplication

Data validation

Data formatting

5. Which of the following is a secondary source of data?

Sensor reading

Survey conducted by you

Official government website

Live experiment data

6. Which process refers to arranging data in a specific order?

Cleaning

Validation

Sorting

Structuring

7. Which of these best describes data encryption?

Storing data in the cloud

Sorting records alphabetically

Converting data into a secure code

Printing data

8. Which of these is quantitative data?

Type of car

Gender

Color of eyes

Age of a person

9. What does CRUD stand for?

Convert, Run, Use, Download

Create, Run, Undo, Deliver

Create, Read, Update, Delete

Count, Remove, Upload, Download

10. Which of the following is an example of real-time data?

Monthly attendance reports

Old census data

Archived research papers

Stock market prices

11. What is a data warehouse?

A large server room

A store for archived documents

A place to store physical files

A central repository of integrated data for analysis

12. Which device is primarily used to input data?

Monitor

Mouse

Speaker

Printer

13. What is data redundancy?

Backing up data

Deleting important data

Repeating data storage unnecessarily

Encrypting data

14. What is big data?

Offline data

Data with big fonts

Small sets of data

Extremely large and complex data sets

15. What does data compression achieve?

Increases file size

Reduces the size of data files

Converts data into graphics

Deletes unnecessary data

16. What does the term "data" refer to?

Instructions given to the computer

Processed information

Raw facts and figures

Graphics only

17. Which of the following can be used to analyze data?

Microsoft Word

Paint

Microsoft Excel

Calculator

18. What does "data processing" mean?

Deleting data

Typing data

Converting raw data into meaningful information

Saving data

19. Which of the following is a primary source of data?

Questionnaire response

Newspaper report

Research article

Textbook

20. Which data type is used to store true/false values?

Float

Integer

Character

Boolean

21. What is the process of identifying and correcting errors in data called?

Data mining

Data cleaning

Data compression

Data migration

22. Which one is a binary data format?

HTML

ZIP

PDF

DOCX

23. Which of the following is not a characteristic of good quality data?

Completeness

Timeliness

Redundancy

Accuracy

24. Which of the following is the smallest unit of data in a computer?

Megabyte

Byte

Kilobyte

Bit

25. Which one is used to display data output?

Scanner

Keyboard

Monitor

Microphone

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26. Which of the following is qualitative data?

Country names

Height in centimeters

Weight in kilograms

Age in years

27. What is data latency?

The security level of the data

The number of columns

Delay in processing or transferring data

The size of the database

28. Which process refers to making backup copies of data?

Deleting

Copying

Formatting

Archiving

29. Which of the following is used for data storage?

CPU

Mouse

RAM

SSD

30. Which one is an example of unstructured data?

SQL table

HTML table

Excel sheet

Image file

31. Which of the following data types is used to represent textual data?

Float

String

Boolean

Integer

32. Which of the following is not a basic operation in a database?

Insert

Encrypt

Update

Delete

33. What is a database?

A collection of images

A networking device

A type of software

An organized collection of data

34. Which of the following formats is commonly used to store tabular data?

.exe

.csv

.mp3

.jpg

35. Which of the following is considered structured data?

Video files

Spreadsheets

Audio files

Images

36. What is the full form of ASCII?

Automated Standard Code for International Interface

American Software for Common Internet Input

Advanced System for Computer Input and Information

American Standard Code for Information Interchange

37. What is structured data stored in?

Audio formats

Tables with rows and columns

Videos

Images

38. Which of the following statements is true?

Data equals information

Data is unprocessed facts

Data is meaningful by itself

Data is always stored on paper

39. Which term refers to the visual representation of data?

Data redundancy

Data mining

Data modeling

Data visualization

40. Which of the following is an example of data mining?

Extracting useful patterns from large datasets

Typing a report

Copying files

Formatting text

41. Which of these best describes metadata?

Data about data

Processed data

Compressed data

Backup data

42. What is the primary purpose of a data model?

To visually organize and define data relationships

To print data

To delete old records

To increase data

43. Which of the following stores data temporarily?

Hard Drive

RAM

SSD

44. What is the purpose of data validation?

To convert data to audio

To ensure data quality and accuracy

To delete incorrect data

To color rows

45. What is the purpose of data sampling?

To compress data

To reduce the size of data for quicker analysis

To encrypt data

To analyze entire datasets

46. Which unit represents approximately 1,024 bytes?

Kilobyte

Gigabyte

Terabyte

Megabyte

47. Which one is not a data type?

Column

Float

Integer

Boolean

48. Which of the following is not a digital data format?

JSON

Chalkboard

CSV

XML

49. Which of the following is a numeric data type?

Char

String

Float

Boolean

50. What is a record in a database?

A row of related data

A single field

A single data item

A column of values

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Mustansar KhanLast Updated: October 15, 2025

Computer Data Basics Test Online

Important Computer Data Basics Question and Answer

Data Basics Practice Test Online With Explanation

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