App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 279 · 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.Which of these makes the app harder to use? (a) captions on videos (b) fast-flashing lights (c) text that can grow (d) big touch targets
2. 2.Which of these makes the app harder to use? (a) text that can grow (b) sudden loud sounds (c) big touch targets (d) captions on videos
3. 3.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
4. 4.True or false: grey text on grey is poor button design. (a) False (b) True
5. 5.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
6. 6.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
7. 7.🧭 Which part of navigation switches main sections? (a) the back button (b) a menu button (c) a tab bar
8. 8.🔢 In a photo-post flow, which comes FIRST? (a) write a caption (b) open the camera screen (c) add a filter (d) take the photo
9. 9.True or false: a final design uses the final pictures. (a) True (b) False
10. 10.Which of these is true of a final design? (a) uses plain grey boxes (b) shows where things go (c) uses the final pictures (d) has no real colours
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 64 px tall
    Start button: 52 px tall
    Next button: 72 px tall
    Cancel button: 36 px tall (a) Cancel (b) Next (c) Send (d) Start
12. 12.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 36 px tall
    Send button: 60 px tall
    Next button: 44 px tall
13. 13.🎨 Who should you test the UX with? (a) real users (b) nobody (c) only yourself (d) the app icon
14. 14.Which of these fits saving in the cloud? (a) a draft you are typing (b) chat messages to friends (c) notes to read offline (d) the sound on/off setting
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 24 px
    Hint: 13 px
    Menu: 27 px (a) Menu (b) Title (c) Hint
16. 16.True or false: buttons almost touching is good button design. (a) True (b) False
17. 17.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Edit photo”
    3. open “Friend list”
    4. tap Back
    5. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
18. 18.Which colour pair is easy to read? (a) black on pale grey (b) red on green (c) light grey on white (d) yellow on white
19. 19.True or false: your last game level fits saving on the phone. (a) True (b) False
20. 20.True or false: a wireframe uses plain grey boxes. (a) False (b) True
21. 21.🧭 Which part of navigation opens a list of pages? (a) a tab bar (b) the back button (c) a menu button
22. 22.True or false: a big, easy tap area is poor button design. (a) False (b) True
23. 23.Which of these is true of a final design? (a) shows where things go (b) has no real colours (c) has the real colours (d) is a quick sketch
24. 24.💾 pop() takes off the last item. What does this code show?
    let friends = ["Aman", "Arjun", "Riya", "Meera", "Zoya"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Arjun (b) Aman (c) Meera (d) Riya
25. 25.🔢 In a quiz-app flow, which comes first: “read a question” or “see if it is right”? (a) read a question (b) see if it is right
26. 26.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 25 px
    Menu: 17 px
    Hint: 9 px (a) Menu (b) Hint (c) Caption
27. 27.Which of these is about UX (the experience)? (a) the font size (b) the icon shapes (c) whether users get lost (d) the button colours
28. 28.💾 What number does this code show?
    let songs = ["Sunrise", "Stars"];
    songs.push("Ocean");
    show(songs.length);
29. 29.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) opens settings (d) closes all apps
30. 30.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Search → Menu → Item → Size → Pay
    Design B: Home → Size → Search → Shop
31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 48 px tall
    Cancel button: 48 px tall
    Next button: 56 px tall
    Done button: 40 px tall
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 16 px
    Menu: 9 px
    Title: 21 px (a) Title (b) Menu (c) Footer
33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 52 px tall
    Save button: 64 px tall
    Next button: 40 px tall
    Cancel button: 68 px tall (a) Save (b) Next (c) Back (d) Cancel
34. 34.🔢 In a sign-up flow, which comes first: “type name and email” or “tap “Sign up””? (a) type name and email (b) tap “Sign up”
35. 35.True or false: your last game level fits saving in the cloud. (a) False (b) True
36. 36.💾 pop() takes off the last item. What does this code show?
    let notes = ["Hindi", "Sports", "Music", "Science"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Sports (b) Music (c) Science (d) Hindi
37. 37.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 56 px tall
    Save button: 64 px tall
    Help button: 52 px tall
39. 39.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ top bar ]
    [ filter buttons ]
    [ tab bar ]
    [ big picture ]
    [ title text ] (a) filter buttons (b) title text (c) big picture (d) top bar
40. 40.✏️ What is a wireframe? (a) the finished app (b) a charging cable (c) a simple screen sketch (d) a type of password

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