App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 285 · 40 questions

Developer's tip (Think like the user): First decide which topic the question is about. Use that lesson’s rule: 48 px buttons, 16 px text, the screen stack, the flow order. For code, count positions from 0.

1. 1.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Map”
   2. tap Back
   3. tap the Search tab
   How many times must you tap Back to reach the main screen of this tab?
2. 2.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) take the photo (c) post the photo (d) add a filter
3. 3.💾 What number does this code show?
   let friends = ["Riya", "Aman", "Kabir"];
   friends.push("Meera");
   show(friends.length);
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Address → Results → Shop
   Design B: Home → Menu → Pay
5. 5.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
6. 6.💾 pop() takes off the last item. What does this code show?
   let songs = ["Kites", "Ocean", "Sunrise"];
   songs.pop();
   show(songs[songs.length - 1]); (a) Sunrise (b) Kites (c) Ocean
7. 7.🔍 Which is the odd one out? (a) fast-flashing lights (b) icons with no labels (c) tiny tap areas (d) text that can grow
8. 8.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
9. 9.🔢 In a photo-post flow, which comes first: “open the camera screen” or “take the photo”? (a) open the camera screen (b) take the photo
10. 10.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) on the phone (b) in the cloud
11. 11.🔢 In a photo-post flow, which comes first: “take the photo” or “write a caption”? (a) write a caption (b) take the photo
12. 12.🔢 In a food-order flow, which comes LAST? (a) check the cart (b) pay for the order (c) track the order (d) open the menu
13. 13.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
14. 14.Which of these is about UI (the look)? (a) how users feel after (b) how fast a task is done (c) how many taps it takes (d) the icon shapes
15. 15.🔘 Our rule: buttons are at least 48 px tall. The Next button is 20 px tall. How many px taller must it be?
16. 16.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) captions on videos (d) fast-flashing lights
17. 17.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) to hide the buttons (d) so each step is clear
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 23 px
    Body text: 16 px
    Footer: 27 px
    Label: 10 px
    Caption: 23 px (a) Label (b) Body text (c) Menu (d) Footer
19. 19.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 44 px tall
    Help button: 32 px tall
    Start button: 32 px tall
    Save button: 52 px tall
20. 20.Which of these is about UX (the experience)? (a) the screen layout (b) the theme colours (c) whether users get lost (d) the font size
21. 21.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) big touch targets (d) fast-flashing lights
22. 22.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
23. 23.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
24. 24.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
25. 25.💾 What number does this code show?
    let points = 8;
    points = points - 8;
    points = points + 4;
    show(points);
26. 26.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
27. 27.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
28. 28.💾 Saving data in the cloud lets you ___. (a) never need a password (b) shrink the app (c) use it on any device (d) skip the internet
29. 29.Which of these is about UI (the look)? (a) how users feel after (b) how many taps it takes (c) the font size (d) whether users get lost
30. 30.♿ Why add captions to videos? (a) so anyone can follow (b) to hide the sound (c) to add colour (d) to slow them down
31. 31.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) that tab’s main screen (c) a random page (d) the last app used
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Offers → Pay → Menu → Results → Cart
    Design B: Home → Menu → Shop → Confirm → Search → Cart → Size
33. 33.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
34. 34.True or false: a clear word like Save is good button design. (a) True (b) False
35. 35.True or false: a final design is a quick sketch. (a) True (b) False
36. 36.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. tap the Profile tab
    3. tap the Search tab
    4. tap the Home tab
    Which screen are you on now? (a) Home (b) Search (c) Profile
38. 38.💾 Which can hold many values in order? (a) a switch (b) a single number (c) a button (d) a list
39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 56 px tall
    Back button: 48 px tall
    Start button: 48 px tall
40. 40.💾 What does this code show? (Positions start at 0.)
    let notes = ["Sports", "Art", "Maths", "Science", "Hindi"];
    show(notes[0]); (a) Art (b) Science (c) Sports (d) Maths

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students