Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 142 · 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 of these is software? (a) a mouse (b) a pen drive (c) a calculator app (d) a webcam
2. 2.Which file ending is a video? (a) .png (b) .mp4 (c) .txt (d) .jpg
3. 3.💾 Which one is the working memory: RAM or storage? (a) RAM (b) storage
4. 4.What does it mean to delete a file? (a) keep your work for later (b) put it in another place (c) throw it away (d) make a brand-new one
5. 5.Which file ending is a picture? (a) .png (b) .mkv (c) .mp3 (d) .pdf
6. 6.Which shortcut do we press to undo? (a) Ctrl+P (b) Ctrl+C (c) Ctrl+A (d) Ctrl+Z
7. 7.💡 What is the smallest unit of computer memory? (a) byte (b) KB (c) bit (d) GB
8. 8.🔢 A bit can be only 0 or ___. (a) 2 (b) 1 (c) 5 (d) 9
9. 9.True or false: a mouse is hardware. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) monitor (b) mouse (c) scanner (d) microphone
11. 11.🔍 Which is the odd one out? (a) a web browser (b) a keyboard (c) a music player app (d) a word processor
12. 12.True or false: to rename a file means to give it a new name. (a) True (b) False
13. 13.🧾 Software is a set of ___ for the computer. (a) screws (b) wires (c) buttons (d) instructions
14. 14.🔍 Which is the odd one out? (a) a monitor (b) a hard disk (c) a speaker (d) a calculator app
15. 15.Which file ending is a video? (a) .pdf (b) .mp3 (c) .avi (d) .jpg
16. 16.True or false: a hard disk is hardware. (a) False (b) True
17. 17.What does it mean to move a file? (a) see what is inside (b) get rid of it (c) keep your work for later (d) put it in another place
18. 18.🏷️ Every file has a ___ so we can find it. (a) smell (b) weight (c) name (d) taste
19. 19.🧩 Is a paint program hardware or software? (a) hardware (b) software
20. 20.Which shortcut do we press to select all? (a) Ctrl+Y (b) Ctrl+A (c) Ctrl+X (d) Ctrl+P
21. 21.💾 How many KB are there in 1 MB?
22. 22.Which of these is software? (a) a typing tutor (b) a mouse (c) a hard disk (d) a speaker
23. 23.Which shortcut do we press to redo? (a) Ctrl+P (b) Ctrl+S (c) Ctrl+Z (d) Ctrl+Y
24. 24.🧩 Is a monitor hardware or software? (a) software (b) hardware
25. 25.💾 Which is bigger: 1 byte or 1 GB? (a) 1 byte (b) 1 GB
26. 26.True or false: a microphone is a storage device. (a) True (b) False
27. 27.🧩 Is a computer game hardware or software? (a) software (b) hardware
28. 28.💾 Which is bigger: 1 GB or 1 bit? (a) 1 bit (b) 1 GB
29. 29.💾 Which is bigger: 1 MB or 1 byte? (a) 1 MB (b) 1 byte
30. 30.Which of these is true of RAM? (a) loses data when off (b) keeps your saved files (c) is permanent storage (d) keeps photos for years
31. 31.True or false: to rename a file means to change its name. (a) True (b) False
32. 32.Which of these is hardware? (a) a web browser (b) a computer game (c) a keyboard (d) an operating system
33. 33.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
34. 34.Which shortcut do we press to save? (a) Ctrl+Y (b) Ctrl+S (c) Ctrl+V (d) Ctrl+C
35. 35.Which of these is software? (a) a keyboard (b) a mouse (c) a scanner (d) a paint program
36. 36.Which of these is hardware? (a) a webcam (b) a computer game (c) a paint program (d) a music player app
37. 37.💾 How many bytes are there in 4 KB?
38. 38.Which file ending is a document? (a) .jpg (b) .png (c) .avi (d) .pdf
39. 39.💾 How many bits are there in 1 byte?
40. 40.💾 How many MB are there in 2 GB?

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