App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 789 · 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 Feed, Chat, Settings. You start on Feed, then:
   1. open “Friend list”
   2. tap the Feed tab
   3. tap the Chat tab
   4. open “Help page”
   Which screen are you on now? (a) Friend list (b) Chat (c) Help page (d) Feed
2. 2.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
   [ tab bar ]
   [ search box ]
   [ title text ]
   [ menu icon ] (a) title text (b) tab bar (c) search box
3. 3.💾 What is a variable? (a) a picture (b) a type of screen (c) a named box for a value (d) a phone setting
4. 4.Which of these is true of a final design? (a) shows the real fonts (b) has no real colours (c) is a quick sketch (d) uses plain grey boxes
5. 5.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a wireframe (b) a final design
6. 6.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Pay → Menu
   Design B: Home → Results → Offers → Address → Confirm → Search → Pens (a) Design B (b) Design A
7. 7.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Home tab
   2. tap the Home tab
   3. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
8. 8.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) tiny tap areas (d) text that can grow
9. 9.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) shortcut (c) tab bar (d) home screen
10. 10.Which of these is about UX (the experience)? (a) how fast a task is done (b) the button colours (c) the screen layout (d) the icon shapes
11. 11.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
12. 12.♿ Why add captions to videos? (a) to slow them down (b) to hide the sound (c) so anyone can follow (d) to add colour
13. 13.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) add a filter (c) write a caption (d) post the photo
14. 14.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) text that can grow (d) tiny tap areas
15. 15.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) sudden loud sounds (d) strong colour contrast
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 20 px
    Body text: 11 px
    Title: 24 px
    Footer: 21 px
    Caption: 24 px
17. 17.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a charging cable (d) a type of font
18. 18.💾 pop() takes off the last item. What does this code show?
    let notes = ["Music", "Science", "Maths"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Science (b) Maths (c) Music
19. 19.🔢 In a quiz-app flow, which comes LAST? (a) tap “Start quiz” (b) pick an answer (c) see the final score (d) see if it is right
20. 20.🧭 Which part of navigation undoes one move? (a) a tab bar (b) the back button (c) a menu button
21. 21.🔢 In a photo-post flow, which comes first: “post the photo” or “write a caption”? (a) write a caption (b) post the photo
22. 22.True or false: strong colour contrast is good button design. (a) False (b) True
23. 23.🔢 In a sign-up flow, which comes FIRST? (a) open the app (b) see the home screen (c) type name and email (d) enter the code sent
24. 24.💾 What number does this code show?
    let songs = ["Ocean", "Rain", "Monsoon", "Sunrise"];
    songs.push("Kites");
    songs.push("Stars");
    show(songs.length);
25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 44 px tall
    Help button: 52 px tall
    Back button: 68 px tall (a) Save (b) Back (c) Help
26. 26.Which of these helps everyone use the app? (a) icons with no labels (b) fast-flashing lights (c) tiny tap areas (d) labels on every icon
27. 27.True or false: the font size is about UI (the look). (a) False (b) True
28. 28.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
29. 29.💾 What number does this code show?
    let lives = 6;
    lives = lives - 5;
    lives = lives + 1;
    show(lives);
30. 30.True or false: chat messages to friends fits saving in the cloud. (a) True (b) False
31. 31.💾 What number does this code show?
    let points = 7;
    points = points - 5;
    points = points + 2;
    show(points);
32. 32.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
33. 33.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Confirm → Menu → Offers → Shop → Size
    Design B: Home → Pay → Shop → Item → Cart → Size
34. 34.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
35. 35.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) check the cart (c) pick a dish (d) track the order
36. 36.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 60 px tall
    Cancel button: 44 px tall
    Help button: 64 px tall
    Start button: 48 px tall
37. 37.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see if it is right (b) see the final score (c) pick an answer (d) read a question
38. 38.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Badges”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
39. 39.Which of these fits saving in the cloud? (a) your last game level (b) a draft you are typing (c) chat messages to friends (d) the sound on/off setting
40. 40.Which of these is true of a wireframe? (a) is a quick sketch (b) shows the real fonts (c) uses the final pictures (d) has the real colours

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