Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 421 · 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) .wav (b) .mkv (c) .txt (d) .jpg
2. 2.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Delete (b) Redo (c) Copy (d) Cut
3. 3.📄 A file name ends in .pdf. What is it most likely? (a) a document (b) a video (c) a picture (d) a sound
4. 4.True or false: to move a file means to change its name. (a) True (b) False
5. 5.💾 Which is smaller: 1 KB or 1 TB? (a) 1 TB (b) 1 KB
6. 6.Which file ending is a picture? (a) .txt (b) .wav (c) .jpg (d) .mp3
7. 7.📁 What do we call a folder inside another folder? (a) a printer (b) a subfolder (c) a big file (d) an icon
8. 8.What does it mean to move a file? (a) give it a new name (b) put it in another place (c) get rid of it (d) store your work
9. 9.True or false: Ctrl+S is the shortcut to undo. (a) True (b) False
10. 10.Which shortcut do we press to copy? (a) Ctrl+Z (b) Ctrl+C (c) Ctrl+Y (d) Ctrl+S
11. 11.Which file ending is a picture? (a) .gif (b) .txt (c) .mp4 (d) .wav
12. 12.📁 Which word means to “make an exact twin” (for a file or folder)? (a) save (b) copy (c) delete (d) move
13. 13.What does it mean to delete a file? (a) put it in another place (b) get rid of it (c) give it a new name (d) make an exact twin
14. 14.💡 What is the smallest unit of computer memory? (a) byte (b) GB (c) bit (d) KB
15. 15.🧩 Is a monitor hardware or software? (a) software (b) hardware
16. 16.Which of these is a storage device? (a) pen drive (b) mouse (c) monitor (d) projector
17. 17.🧾 Software is a set of ___ for the computer. (a) screws (b) buttons (c) instructions (d) wires
18. 18.✂️ You want to move a sentence to the end. What do you use first? (a) Cut (b) Undo (c) Print (d) Delete
19. 19.Which of these is true of storage (like a hard disk)? (a) holds apps that are open (b) loses data when off (c) is the working memory (d) keeps your saved files
20. 20.⚡ Which is faster for the computer to work with? (a) a pen drive (b) a memory card (c) a printer (d) RAM
21. 21.True or false: to move a file means to see what is inside. (a) False (b) True
22. 22.Which of these is true of storage (like a hard disk)? (a) loses data when off (b) keeps data when off (c) is the working memory (d) holds apps that are open
23. 23.Which of these is true of storage (like a hard disk)? (a) holds apps that are open (b) is permanent storage (c) is temporary memory (d) is the working memory
24. 24.💾 How many bytes are there in 4 KB?
25. 25.True or false: Ctrl+Z is the shortcut to undo. (a) False (b) True
26. 26.☁️ Saving files on the internet to use from anywhere is called ___. (a) paper storage (b) box storage (c) cloud storage (d) rain storage
27. 27.✋ Which can we touch: hardware or software? (a) software (b) hardware
28. 28.🔢 A bit can be only 0 or ___. (a) 9 (b) 2 (c) 1 (d) 5
29. 29.What does it mean to open a file? (a) give it a new name (b) change its name (c) get rid of it (d) see what is inside
30. 30.💾 How many MB are there in 3 GB?
31. 31.⌨️ In a word processor, what does Ctrl+C do? (a) save (b) cut (c) print (d) copy
32. 32.🧩 Is a hard disk hardware or software? (a) software (b) hardware
33. 33.🖍️ Before we cut or copy text, we must first ___ it. (a) delete (b) select (c) save (d) print
34. 34.True or false: RAM keeps data when off. (a) True (b) False
35. 35.💾 Which is bigger: 1 MB or 1 bit? (a) 1 bit (b) 1 MB
36. 36.True or false: a speaker is software. (a) False (b) True
37. 37.True or false: to rename a file means to see what is inside. (a) False (b) True
38. 38.🧰 Is a scanner a storage, input or output device? (a) a storage device (b) an input device (c) an output device
39. 39.👩‍💻 What do we call people who write software? (a) tailors (b) farmers (c) programmers (d) plumbers
40. 40.Which of these is true of RAM? (a) keeps your saved files (b) keeps photos for years (c) is temporary memory (d) keeps data when off

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