App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 519 · 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.True or false: a shared to-do list fits saving in the cloud. (a) False (b) True
2. 2.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Home tab
   2. tap the Search tab
   3. tap the Search tab
   4. tap the Home tab
   How many times must you tap Back to reach the main screen of this tab?
3. 3.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) sudden loud sounds (d) big touch targets
4. 4.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Send button: 28 px tall
   Save button: 72 px tall
   Start button: 64 px tall
   Help button: 72 px tall (a) Send (b) Help (c) Save (d) Start
5. 5.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
6. 6.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read
7. 7.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
8. 8.True or false: a wireframe is a quick sketch. (a) True (b) False
9. 9.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
10. 10.♿ Accessibility means an app works for ___. (a) everyone (b) only the coder (c) only experts (d) nobody
11. 11.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) the sound on/off setting (d) a shared to-do list
12. 12.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
13. 13.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
14. 14.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
15. 15.💾 What number does this code show?
    let friends = ["Meera", "Aman"];
    friends.push("Zoya");
    show(friends.length);
16. 16.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
17. 17.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Pens → Menu → Shop
    Design B: Home → Menu → Address (a) Design A (b) Design B
18. 18.True or false: notes to read offline fits saving on the phone. (a) True (b) False
19. 19.💾 pop() takes off the last item. What does this code show?
    let notes = ["Science", "Sports", "Art", "Hindi"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Art (b) Science (c) Hindi (d) Sports
20. 20.Which of these is true of a final design? (a) shows where things go (b) uses plain grey boxes (c) has the real colours (d) is a quick sketch
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Cart
    Design B: Home → Menu → Pay → Search → Shop → Cart → Results
22. 22.🧭 About how many tabs suit a tab bar best? (a) 10 to 12 (b) 1 (c) 20 (d) 3 to 5
23. 23.🎨 Is this about UI or UX: how fast a task is done? (a) UX (b) UI
24. 24.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
25. 25.Which of these is about UI (the look)? (a) whether users get lost (b) how easy sign-up is (c) the font size (d) how users feel after
26. 26.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Menu → Item → Size
    Design B: Home → Address → Item → Shop → Pay → Pens
27. 27.True or false: chat messages to friends fits saving on the phone. (a) False (b) True
28. 28.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Confirm → Offers → Cart
    Design B: Home → Menu → Confirm → Pay → Shop → Results → Address (a) Design B (b) Design A
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 27 px
    Caption: 12 px
    Hint: 16 px
    Menu: 16 px (a) Caption (b) Hint (c) Label (d) Menu
30. 30.♿ A screen has 8 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
31. 31.True or false: a clear word like Save is poor button design. (a) True (b) False
32. 32.✏️ Why draw a wireframe before coding? (a) it runs the app (b) changes are quick (c) it adds colours (d) it saves data
33. 33.🎨 Who should you test the UX with? (a) the app icon (b) real users (c) nobody (d) only yourself
34. 34.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Match report”
    2. open “Help page”
    3. tap the Feed tab
    How many times must you tap Back to reach the main screen of this tab?
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 21 px
    Label: 13 px
    Hint: 23 px (a) Label (b) Hint (c) Footer
36. 36.🧭 Which part of navigation sits at the bottom? (a) a menu button (b) the back button (c) a tab bar
37. 37.💾 What number does this code show?
    let friends = ["Aman", "Arjun", "Zoya", "Riya"];
    friends.push("Kabir");
    show(friends.length);
38. 38.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. tap the Feed tab
    3. open “Help page”
    4. open “Badges”
    Which screen are you on now? (a) Help page (b) Feed (c) Badges (d) Chat
39. 39.✏️ What is the easiest way to draw a first wireframe? (a) a 3D printer (b) a microphone (c) pencil and paper (d) a phone case
40. 40.🔢 In a quiz-app flow, which comes LAST? (a) read a question (b) see if it is right (c) see the final score (d) pick an answer

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