Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 878 · 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 picture? (a) .pdf (b) .mkv (c) .png (d) .mp4
2. 2.👩‍💻 What do we call people who write software? (a) tailors (b) farmers (c) plumbers (d) programmers
3. 3.💾 Which is smaller: 1 GB or 1 byte? (a) 1 GB (b) 1 byte
4. 4.⌨️ In a word processor, what does Ctrl+V do? (a) undo (b) paste (c) redo (d) select all
5. 5.⌨️ In a word processor, what does Ctrl+A do? (a) cut (b) select all (c) redo (d) copy
6. 6.True or false: to open a file means to see what is inside. (a) True (b) False
7. 7.💾 Which is bigger: 1 KB or 1 TB? (a) 1 TB (b) 1 KB
8. 8.Which of these is software? (a) a hard disk (b) a calculator app (c) a monitor (d) a mouse
9. 9.🔍 Which is the odd one out? (a) a webcam (b) a printer (c) a hard disk (d) a music player app
10. 10.🧩 Is a web browser hardware or software? (a) software (b) hardware
11. 11.📄 A file name ends in .mp3. What is it most likely? (a) a video (b) a sound (c) a picture (d) a document
12. 12.True or false: a scanner is an output device. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a typing tutor (b) an operating system (c) a printer (d) a word processor
14. 14.Which of these is true of storage (like a hard disk)? (a) is the working memory (b) keeps data when off (c) loses data when off (d) holds apps that are open
15. 15.True or false: to rename a file means to change its name. (a) False (b) True
16. 16.What does it mean to rename a file? (a) get rid of it (b) throw it away (c) make an exact twin (d) give it a new name
17. 17.True or false: a keyboard is an output device. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a keyboard (b) a speaker (c) a mouse (d) an operating system
19. 19.Which of these is hardware? (a) a pen drive (b) a web browser (c) a music player app (d) a calculator app
20. 20.🔢 A bit can be only 0 or ___. (a) 9 (b) 1 (c) 2 (d) 5
21. 21.Which of these is a storage device? (a) microphone (b) scanner (c) memory card (d) keyboard
22. 22.😮 You deleted a word by mistake. What brings it back? (a) Undo (b) Copy (c) Cut (d) Save
23. 23.💾 How many KB are there in 2 MB?
24. 24.📁 Which word means to “get rid of it” (for a file or folder)? (a) open (b) save (c) delete (d) rename
25. 25.True or false: a music player app is hardware. (a) True (b) False
26. 26.✋ Which can we touch: hardware or software? (a) software (b) hardware
27. 27.🧩 Is a webcam hardware or software? (a) hardware (b) software
28. 28.Which of these is an input device? (a) scanner (b) memory card (c) pen drive (d) solid-state drive
29. 29.🔍 Which is the odd one out? (a) a scanner (b) a word processor (c) a music player app (d) a typing tutor
30. 30.Which of these is an output device? (a) memory card (b) pen drive (c) projector (d) keyboard
31. 31.💾 How many bytes are there in 2 KB?
32. 32.True or false: storage (like a hard disk) is temporary memory. (a) True (b) False
33. 33.💾 How many bits are there in 12 bytes?
34. 34.💡 What is the smallest unit of computer memory? (a) bit (b) GB (c) KB (d) byte
35. 35.💾 How many MB are there in 2 GB?
36. 36.🏷️ Every file has a ___ so we can find it. (a) name (b) taste (c) weight (d) smell
37. 37.Which of these is an output device? (a) hard disk (b) speaker (c) solid-state drive (d) keyboard
38. 38.True or false: to delete a file means to make a brand-new one. (a) True (b) False
39. 39.🧩 Is a music player app hardware or software? (a) hardware (b) software
40. 40.Which of these is an input device? (a) memory card (b) solid-state drive (c) mouse (d) printer

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