Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 639 · 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.💾 How many KB are there in 3 MB?
2. 2.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Cut (b) Delete (c) Copy (d) Redo
3. 3.🔢 A bit can be only 0 or ___. (a) 5 (b) 9 (c) 2 (d) 1
4. 4.📄 A file name ends in .pdf. What is it most likely? (a) a video (b) a picture (c) a sound (d) a document
5. 5.📁 Which word means to “put it in another place” (for a file or folder)? (a) rename (b) save (c) delete (d) move
6. 6.Which of these is true of RAM? (a) is temporary memory (b) keeps your saved files (c) keeps photos for years (d) keeps data when off
7. 7.True or false: a scanner is hardware. (a) False (b) True
8. 8.☁️ Saving files on the internet to use from anywhere is called ___. (a) box storage (b) rain storage (c) paper storage (d) cloud storage
9. 9.Which shortcut do we press to copy? (a) Ctrl+X (b) Ctrl+S (c) Ctrl+P (d) Ctrl+C
10. 10.📁 Which word means to “see what is inside” (for a file or folder)? (a) create (b) save (c) open (d) delete
11. 11.Which of these is software? (a) a monitor (b) a speaker (c) a web browser (d) a scanner
12. 12.💾 Which is smaller: 1 bit or 1 GB? (a) 1 bit (b) 1 GB
13. 13.🔍 Which is the odd one out? (a) a calculator app (b) a keyboard (c) a pen drive (d) a webcam
14. 14.Which of these is hardware? (a) a web browser (b) an operating system (c) a paint program (d) a keyboard
15. 15.Which of these is hardware? (a) a paint program (b) a webcam (c) a web browser (d) an operating system
16. 16.True or false: a webcam is hardware. (a) False (b) True
17. 17.⌨️ In a word processor, what does Ctrl+P do? (a) print (b) paste (c) cut (d) redo
18. 18.💾 Which is smaller: 1 byte or 1 KB? (a) 1 KB (b) 1 byte
19. 19.🔌 The power goes off suddenly. Which loses the unsaved work? (a) RAM (b) the pen drive (c) the memory card (d) the hard disk
20. 20.💾 How many bits are there in 2 bytes?
21. 21.🧰 Is a monitor a storage, input or output device? (a) an output device (b) a storage device (c) an input device
22. 22.Which of these is an input device? (a) solid-state drive (b) keyboard (c) speaker (d) projector
23. 23.True or false: a calculator app is software. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a pen drive (b) a paint program (c) an operating system (d) a calculator app
25. 25.Which file ending is a sound? (a) .mp3 (b) .png (c) .avi (d) .mp4
26. 26.📁 Which word means to “give it a new name” (for a file or folder)? (a) rename (b) move (c) create (d) copy
27. 27.⌨️ In a word processor, what does Ctrl+A do? (a) redo (b) cut (c) copy (d) select all
28. 28.📁 Which word means to “throw it away” (for a file or folder)? (a) delete (b) copy (c) rename (d) save
29. 29.💡 What is the smallest unit of computer memory? (a) GB (b) bit (c) byte (d) KB
30. 30.🧰 Is a speaker a storage, input or output device? (a) an input device (b) an output device (c) a storage device
31. 31.🔍 Which is the odd one out? (a) a word processor (b) a monitor (c) a computer game (d) a music player app
32. 32.True or false: a hard disk is a storage device. (a) False (b) True
33. 33.📁 Which word means to “keep your work for later” (for a file or folder)? (a) copy (b) create (c) save (d) rename
34. 34.🔍 Which is the odd one out? (a) a monitor (b) a speaker (c) a mouse (d) a typing tutor
35. 35.💾 Which is smaller: 1 TB or 1 bit? (a) 1 bit (b) 1 TB
36. 36.🧩 Is a music player app hardware or software? (a) software (b) hardware
37. 37.🔍 Which is the odd one out? (a) monitor (b) printer (c) speaker (d) mouse
38. 38.⌨️ In a word processor, what does Ctrl+X do? (a) save (b) paste (c) redo (d) cut
39. 39.📄 A file name ends in .mp3. What is it most likely? (a) a sound (b) a picture (c) a document (d) a video
40. 40.👩‍💻 What do we call people who write software? (a) plumbers (b) tailors (c) farmers (d) programmers

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