Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 872 · 40 questions

Remember (Find the topic, use the idea): Read the question and find its topic: hardware or software, units, memory, files, or editing text. Use that lesson’s idea — can you touch it, multiply to change units, RAM forgets, which file action, which shortcut. For unit sums, write the rule first (1 byte = 8 bits, 1 KB = 1024 bytes) and then multiply.

1. 1.Which file ending is a sound? (a) .avi (b) .mp4 (c) .wav (d) .png
2. 2.📄 A file name ends in .avi. What is it most likely? (a) a sound (b) a document (c) a picture (d) a video
3. 3.🔢 A bit can be only 0 or ___. (a) 9 (b) 2 (c) 1 (d) 5
4. 4.🧩 Is a web browser hardware or software? (a) software (b) hardware
5. 5.🔍 Which is the odd one out? (a) a speaker (b) a printer (c) an operating system (d) a hard disk
6. 6.▌ What is the blinking line that shows where you will type? (a) the cursor (b) the toolbar (c) the folder (d) the icon
7. 7.🔍 Which is the odd one out? (a) scanner (b) mouse (c) keyboard (d) hard disk
8. 8.True or false: Ctrl+Y is the shortcut to redo. (a) False (b) True
9. 9.⌨️ In a word processor, what does Ctrl+Z do? (a) cut (b) undo (c) redo (d) copy
10. 10.True or false: a computer game is software. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) mouse (b) microphone (c) projector (d) keyboard
12. 12.What does it mean to delete a file? (a) give it a new name (b) store your work (c) get rid of it (d) change its name
13. 13.True or false: Ctrl+P is the shortcut to save. (a) False (b) True
14. 14.True or false: Ctrl+C is the shortcut to cut. (a) False (b) True
15. 15.💡 What is the smallest unit of computer memory? (a) bit (b) GB (c) KB (d) byte
16. 16.💾 Which one keeps photos for years: RAM or storage? (a) RAM (b) storage
17. 17.✋ Which can we touch: hardware or software? (a) hardware (b) software
18. 18.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the memory card (b) RAM (c) the pen drive (d) the hard disk
19. 19.💾 Which is bigger: 1 MB or 1 byte? (a) 1 byte (b) 1 MB
20. 20.What does it mean to move a file? (a) get rid of it (b) see what is inside (c) change its name (d) put it in another place
21. 21.🧩 Is a hard disk hardware or software? (a) software (b) hardware
22. 22.🔍 Which is the odd one out? (a) a paint program (b) a music player app (c) a pen drive (d) a computer game
23. 23.💾 How many KB are there in 4 MB?
24. 24.💾 Which one keeps your saved files: RAM or storage? (a) storage (b) RAM
25. 25.🔍 Which is the odd one out? (a) a calculator app (b) a typing tutor (c) a speaker (d) an operating system
26. 26.📄 A file name ends in .wav. What is it most likely? (a) a picture (b) a sound (c) a video (d) a document
27. 27.📁 Which word means to “keep your work for later” (for a file or folder)? (a) move (b) save (c) open (d) copy
28. 28.⚡ Which is faster for the computer to work with? (a) a pen drive (b) RAM (c) a printer (d) a memory card
29. 29.💾 How many bits are there in 9 bytes?
30. 30.Which shortcut do we press to redo? (a) Ctrl+X (b) Ctrl+V (c) Ctrl+Y (d) Ctrl+C
31. 31.Which shortcut do we press to copy? (a) Ctrl+Y (b) Ctrl+X (c) Ctrl+C (d) Ctrl+P
32. 32.Which shortcut do we press to paste? (a) Ctrl+X (b) Ctrl+Y (c) Ctrl+P (d) Ctrl+V
33. 33.True or false: a scanner is an input device. (a) False (b) True
34. 34.True or false: a printer is hardware. (a) True (b) False
35. 35.Which of these is hardware? (a) a hard disk (b) an operating system (c) a typing tutor (d) a word processor
36. 36.True or false: to save a file means to see what is inside. (a) False (b) True
37. 37.💾 Which is bigger: 1 TB or 1 bit? (a) 1 bit (b) 1 TB
38. 38.True or false: storage (like a hard disk) holds apps that are open. (a) False (b) True
39. 39.Which of these is an input device? (a) monitor (b) projector (c) keyboard (d) hard disk
40. 40.Which of these is true of RAM? (a) keeps your saved files (b) is permanent storage (c) keeps photos for years (d) is the working memory

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