Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 332 · 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.💡 What is the smallest unit of computer memory? (a) bit (b) KB (c) GB (d) byte
2. 2.🔢 A bit can be only 0 or ___. (a) 1 (b) 2 (c) 5 (d) 9
3. 3.Which shortcut do we press to undo? (a) Ctrl+V (b) Ctrl+Z (c) Ctrl+P (d) Ctrl+Y
4. 4.💾 Which is bigger: 1 GB or 1 bit? (a) 1 GB (b) 1 bit
5. 5.▌ What is the blinking line that shows where you will type? (a) the icon (b) the toolbar (c) the cursor (d) the folder
6. 6.📁 What do we call a folder inside another folder? (a) an icon (b) a big file (c) a printer (d) a subfolder
7. 7.True or false: a microphone is an input device. (a) False (b) True
8. 8.⌨️ In a word processor, what does Ctrl+A do? (a) copy (b) print (c) select all (d) redo
9. 9.🔍 Which is the odd one out? (a) a scanner (b) an operating system (c) a webcam (d) a hard disk
10. 10.Which of these is an output device? (a) solid-state drive (b) mouse (c) scanner (d) monitor
11. 11.💾 Which is bigger: 1 TB or 1 bit? (a) 1 TB (b) 1 bit
12. 12.Which of these is true of storage (like a hard disk)? (a) keeps photos for years (b) is the working memory (c) is temporary memory (d) loses data when off
13. 13.📁 Which word means to “store your work” (for a file or folder)? (a) rename (b) save (c) delete (d) move
14. 14.Which of these is a storage device? (a) mouse (b) microphone (c) pen drive (d) printer
15. 15.✋ Which can we touch: hardware or software? (a) software (b) hardware
16. 16.📁 Which word means to “throw it away” (for a file or folder)? (a) rename (b) create (c) delete (d) open
17. 17.🧩 Is a webcam hardware or software? (a) hardware (b) software
18. 18.🧰 Is a scanner a storage, input or output device? (a) an output device (b) a storage device (c) an input device
19. 19.Which file ending is a picture? (a) .wav (b) .mp4 (c) .jpg (d) .mp3
20. 20.📄 A file name ends in .png. What is it most likely? (a) a sound (b) a video (c) a picture (d) a document
21. 21.True or false: a memory card is a storage device. (a) False (b) True
22. 22.💾 Which is bigger: 1 byte or 1 MB? (a) 1 byte (b) 1 MB
23. 23.What does it mean to copy a file? (a) make an exact twin (b) store your work (c) get rid of it (d) make a brand-new one
24. 24.True or false: Ctrl+P is the shortcut to save. (a) False (b) True
25. 25.🏷️ Every file has a ___ so we can find it. (a) weight (b) smell (c) taste (d) name
26. 26.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the hard disk (b) RAM (c) the memory card (d) the pen drive
27. 27.💾 How many bytes are there in 4 KB?
28. 28.🧰 Is a memory card a storage, input or output device? (a) an input device (b) a storage device (c) an output device
29. 29.💾 Which is bigger: 1 byte or 1 bit? (a) 1 bit (b) 1 byte
30. 30.👩‍💻 What do we call people who write software? (a) farmers (b) tailors (c) plumbers (d) programmers
31. 31.🔍 Which is the odd one out? (a) a keyboard (b) a speaker (c) a computer game (d) a pen drive
32. 32.True or false: Ctrl+P is the shortcut to paste. (a) True (b) False
33. 33.📄 A file name ends in .pdf. What is it most likely? (a) a picture (b) a sound (c) a video (d) a document
34. 34.📄 A file name ends in .mp4. What is it most likely? (a) a video (b) a document (c) a picture (d) a sound
35. 35.📄 A file name ends in .mp3. What is it most likely? (a) a video (b) a document (c) a picture (d) a sound
36. 36.🧾 Software is a set of ___ for the computer. (a) wires (b) instructions (c) screws (d) buttons
37. 37.Which of these is hardware? (a) a music player app (b) a paint program (c) a keyboard (d) a calculator app
38. 38.🧩 Is a word processor hardware or software? (a) hardware (b) software
39. 39.💾 Which is smaller: 1 bit or 1 MB? (a) 1 MB (b) 1 bit
40. 40.What does it mean to open a file? (a) make an exact twin (b) put it in another place (c) get rid of it (d) see what is inside

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