Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 739 · 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) .mp3 (b) .wav (c) .pdf (d) .jpg
2. 2.💾 How many MB are there in 3 GB?
3. 3.💾 Which one keeps your saved files: RAM or storage? (a) storage (b) RAM
4. 4.🔢 A bit can be only 0 or ___. (a) 1 (b) 9 (c) 2 (d) 5
5. 5.True or false: storage (like a hard disk) is temporary memory. (a) False (b) True
6. 6.True or false: a speaker is an output device. (a) False (b) True
7. 7.What does it mean to open a file? (a) see what is inside (b) change its name (c) get rid of it (d) keep your work for later
8. 8.💡 What is the smallest unit of computer memory? (a) KB (b) byte (c) bit (d) GB
9. 9.💾 Which is bigger: 1 byte or 1 TB? (a) 1 byte (b) 1 TB
10. 10.🧩 Is a printer hardware or software? (a) software (b) hardware
11. 11.📋 You want the same sentence in two places. What do you use first? (a) Backspace (b) Undo (c) Delete (d) Copy
12. 12.True or false: Ctrl+V is the shortcut to save. (a) False (b) True
13. 13.📁 Which word means to “get rid of it” (for a file or folder)? (a) move (b) open (c) save (d) delete
14. 14.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Delete (b) Copy (c) Cut (d) Redo
15. 15.😮 You deleted a word by mistake. What brings it back? (a) Cut (b) Copy (c) Save (d) Undo
16. 16.🧰 Is a pen drive a storage, input or output device? (a) an input device (b) a storage device (c) an output device
17. 17.Which shortcut do we press to undo? (a) Ctrl+C (b) Ctrl+S (c) Ctrl+Z (d) Ctrl+V
18. 18.⌨️ In a word processor, what does Ctrl+P do? (a) cut (b) paste (c) select all (d) print
19. 19.🔍 Which is the odd one out? (a) a calculator app (b) a paint program (c) a keyboard (d) an operating system
20. 20.What does it mean to save a file? (a) keep your work for later (b) get rid of it (c) see what is inside (d) give it a new name
21. 21.Which of these is hardware? (a) a music player app (b) an operating system (c) a scanner (d) a typing tutor
22. 22.📷 A camera keeps its photos on a small ___. (a) speaker (b) mouse pad (c) memory card (d) keyboard
23. 23.🧩 Is a typing tutor hardware or software? (a) hardware (b) software
24. 24.True or false: a printer is hardware. (a) False (b) True
25. 25.🧾 Software is a set of ___ for the computer. (a) instructions (b) buttons (c) wires (d) screws
26. 26.🔍 Which is the odd one out? (a) a monitor (b) a keyboard (c) a speaker (d) a calculator app
27. 27.💾 How many bits are there in 8 bytes?
28. 28.💾 How many KB are there in 1 MB?
29. 29.True or false: a scanner is hardware. (a) False (b) True
30. 30.💾 Which is bigger: 1 KB or 1 GB? (a) 1 GB (b) 1 KB
31. 31.📄 A file name ends in .mkv. What is it most likely? (a) a sound (b) a document (c) a video (d) a picture
32. 32.💾 How many GB are there in 1 TB?
33. 33.📁 Which word means to “put it in another place” (for a file or folder)? (a) copy (b) rename (c) move (d) delete
34. 34.✋ Which can we touch: hardware or software? (a) software (b) hardware
35. 35.📂 What holds many files together, like a school bag holds books? (a) a mouse (b) a pixel (c) a speaker (d) a folder
36. 36.💾 How many bits are there in 1 byte?
37. 37.💾 Which one is permanent storage: RAM or storage? (a) storage (b) RAM
38. 38.🧩 Is a music player app hardware or software? (a) software (b) hardware
39. 39.💾 Which is smaller: 1 KB or 1 TB? (a) 1 KB (b) 1 TB
40. 40.🔍 Which is the odd one out? (a) a keyboard (b) a pen drive (c) a monitor (d) a music player app

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