App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 163 · 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.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
2. 2.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
3. 3.🧭 Which part of navigation sits at the bottom? (a) a menu button (b) the back button (c) a tab bar
4. 4.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Next button: 36 px tall
   Send button: 36 px tall
   Help button: 48 px tall
   Done button: 64 px tall
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Chat tab
   2. tap the Chat tab
   3. tap the Settings tab
   4. open “Edit photo”
   Which screen are you on now? (a) Settings (b) Feed (c) Chat (d) Edit photo
6. 6.🔢 In a sign-up flow, which comes first: “type name and email” or “open the app”? (a) type name and email (b) open the app
7. 7.True or false: a wireframe uses plain grey boxes. (a) False (b) True
8. 8.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
9. 9.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Search → Item
   Design B: Home → Confirm → Shop → Search (a) Design B (b) Design A
10. 10.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
11. 11.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) icons with no labels (d) captions on videos
12. 12.🔍 Which is the odd one out? (a) sudden loud sounds (b) colour as the only clue (c) fast-flashing lights (d) big touch targets
13. 13.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
14. 14.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) a picture goes here (c) an error (d) a closed app
15. 15.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Riya", "Aman", "Kabir"];
    show(friends[3]); (a) Riya (b) Aman (c) Kabir (d) Arjun
16. 16.💾 Which can hold many values in order? (a) a list (b) a single number (c) a switch (d) a button
17. 17.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
18. 18.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) colour-blind users (c) the battery (d) the server
19. 19.True or false: a tiny 20 px button is good button design. (a) False (b) True
20. 20.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ menu icon ]
    [ filter buttons ]
    [ list of items ]
    [ big picture ]
    [ title text ] (a) search box (b) filter buttons (c) big picture (d) title text
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 9 px
    Title: 27 px
    Hint: 21 px (a) Hint (b) Title (c) Footer
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 14 px
    Title: 20 px
    Footer: 10 px
23. 23.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
24. 24.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Next button: 28 px tall
    Back button: 64 px tall (a) Next (b) Back (c) Save
25. 25.True or false: a shared to-do list fits saving in the cloud. (a) False (b) True
26. 26.True or false: a final design shows where things go. (a) True (b) False
27. 27.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Confirm → Size → Pay → Search → Menu
    Design B: Home → Results → Confirm (a) Design A (b) Design B
28. 28.💾 What number does this code show?
    let coins = 5;
    coins = coins - 1;
    coins = coins + 4;
    show(coins);
29. 29.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
30. 30.🔢 In a photo-post flow, which comes FIRST? (a) open the camera screen (b) write a caption (c) add a filter (d) take the photo
31. 31.🔢 In a sign-up flow, which comes first: “open the app” or “see the home screen”? (a) open the app (b) see the home screen
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap the Home tab
    3. open “Video”
    4. tap Back
    5. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap the Chat tab
    3. open “Badges”
    4. tap the Chat tab
    5. open “Badges”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.Which of these makes the app harder to use? (a) text that can grow (b) captions on videos (c) labels on every icon (d) icons with no labels
35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 32 px tall
    Next button: 52 px tall
    Send button: 40 px tall
    Help button: 64 px tall
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Menu → Results → Pay
    Design B: Home → Item → Search
37. 37.True or false: a class leaderboard fits saving on the phone. (a) False (b) True
38. 38.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
39. 39.🖼️ How many parts (boxes) does this wireframe have?
    [ list of items ]
    [ tab bar ]
    [ filter buttons ]
    [ Save button ]
40. 40.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design

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