App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 929 · 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.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) add a filter (b) take the photo (c) post the photo (d) write a caption
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Start button: 64 px tall
   Back button: 24 px tall
   Cancel button: 48 px tall
   Send button: 68 px tall (a) Cancel (b) Start (c) Back (d) Send
3. 3.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Cancel button: 36 px tall
   Back button: 36 px tall
   Done button: 56 px tall
   Start button: 56 px tall
4. 4.💾 pop() takes off the last item. What does this code show?
   let notes = ["Science", "Music", "Maths", "Art", "Sports"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Music (b) Art (c) Maths (d) Science
5. 5.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
6. 6.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Chat tab
   2. open “Friend list”
   3. tap Back
   Which screen are you on now? (a) Feed (b) Settings (c) Chat (d) Friend list
7. 7.True or false: how fast a task is done is about UX (the experience). (a) False (b) True
8. 8.Which of these is true of a tab bar? (a) hides extra links (b) undoes one move (c) sits at the bottom (d) opens a list of pages
9. 9.♿ A screen has 11 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
10. 10.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. tap the Quiz tab
    3. open “Map”
    4. open “Score card”
    5. tap the Quiz tab
    How many times must you tap Back to reach the main screen of this tab?
11. 11.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
12. 12.True or false: your last game level fits saving on the phone. (a) True (b) False
13. 13.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
14. 14.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) type name and email (b) see the home screen (c) make a password (d) open the app
15. 15.Which of these is about UI (the look)? (a) whether users get lost (b) the button colours (c) how many taps it takes (d) how users feel after
16. 16.🔢 In a photo-post flow, which comes first: “write a caption” or “open the camera screen”? (a) write a caption (b) open the camera screen
17. 17.🔢 In a photo-post flow, which comes first: “open the camera screen” or “post the photo”? (a) open the camera screen (b) post the photo
18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 64 px tall
    Send button: 40 px tall
    Back button: 44 px tall
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Menu → Cart
    Design B: Home → Search → Offers → Pens → Cart → Pay
20. 20.🔍 Which is the odd one out? (a) captions on videos (b) text that can grow (c) icons with no labels (d) strong colour contrast
21. 21.💾 Which can hold many values in order? (a) a button (b) a switch (c) a single number (d) a list
22. 22.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ list of items ]
    [ search box ]
    [ Save button ]
    [ Add button ]
    [ menu icon ] (a) menu icon (b) search box (c) Add button (d) list of items
23. 23.💾 What does this code show? (Positions start at 0.)
    let songs = ["Monsoon", "Kites", "Rain"];
    show(songs[1]); (a) Monsoon (b) Rain (c) Kites
24. 24.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Menu → Results → Cart
    Design B: Home → Size → Search → Cart → Pens → Results
25. 25.Which of these is true of a final design? (a) uses plain grey boxes (b) shows where things go (c) has no real colours (d) uses the final pictures
26. 26.💾 What number does this code show?
    let friends = ["Meera", "Zoya", "Aman", "Arjun"];
    friends.push("Kabir");
    friends.push("Riya");
    show(friends.length);
27. 27.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
28. 28.True or false: a big, easy tap area is poor button design. (a) False (b) True
29. 29.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
30. 30.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 17 px
    Title: 9 px
    Footer: 20 px (a) Footer (b) Title (c) Body text
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Score card”
    3. open “Score card”
    Which screen are you on now? (a) Search (b) Profile (c) Home (d) Score card
33. 33.True or false: a wireframe uses plain grey boxes. (a) False (b) True
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 19 px
    Body text: 22 px
    Menu: 27 px
    Footer: 26 px
    Hint: 13 px (a) Menu (b) Label (c) Hint (d) Body text
35. 35.💾 What number does this code show?
    let points = 6;
    points = points - 1;
    points = points + 3;
    show(points);
36. 36.🧭 Which part of navigation opens a list of pages? (a) a tab bar (b) a menu button (c) the back button
37. 37.🖼️ In this wireframe (top to bottom), what is right below the search box?
    [ filter buttons ]
    [ tab bar ]
    [ Add button ]
    [ Save button ]
    [ search box ]
    [ top bar ] (a) Save button (b) filter buttons (c) top bar (d) tab bar
38. 38.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
39. 39.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
40. 40.Which of these fits saving on the phone? (a) chat messages to friends (b) a class leaderboard (c) a shared to-do list (d) your last game level

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