App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 505 · 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.🖼️ How many parts (boxes) does this wireframe have?
   [ top bar ]
   [ big picture ]
   [ Save button ]
   [ filter buttons ]
2. 2.💾 pop() takes off the last item. What does this code show?
   let notes = ["Music", "Art", "Sports"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Art (b) Music (c) Sports
3. 3.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Badges”
   2. tap Back
   3. open “Badges”
   Which screen are you on now? (a) Home (b) Badges (c) Search (d) Profile
4. 4.💾 In most code, the first item of a list is at position ___. (a) 2 (b) 10 (c) 0 (d) 1
5. 5.True or false: a big, easy tap area is poor button design. (a) False (b) True
6. 6.Which of these fits saving in the cloud? (a) chat messages to friends (b) the sound on/off setting (c) notes to read offline (d) a draft you are typing
7. 7.Which of these helps everyone use the app? (a) tiny tap areas (b) fast-flashing lights (c) colour as the only clue (d) captions on videos
8. 8.💾 pop() takes off the last item. What does this code show?
   let notes = ["Sports", "Music", "Science", "Hindi", "Maths"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Music (b) Science (c) Hindi (d) Sports
9. 9.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
10. 10.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
11. 11.Which of these is about UX (the experience)? (a) the button colours (b) the font size (c) the screen layout (d) how fast a task is done
12. 12.Which of these fits saving on the phone? (a) a class leaderboard (b) photos on two devices (c) chat messages to friends (d) the sound on/off setting
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 20 px
    Title: 28 px
    Menu: 11 px (a) Footer (b) Menu (c) Title
14. 14.True or false: notes to read offline fits saving in the cloud. (a) False (b) True
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 23 px
    Menu: 24 px
    Title: 17 px
16. 16.🧭 Which part of navigation undoes one move? (a) the back button (b) a tab bar (c) a menu button
17. 17.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) colour as the only clue (d) big touch targets
18. 18.🎨 Is this about UI or UX: how users feel after? (a) UI (b) UX
19. 19.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
20. 20.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) plays music (d) takes photos
21. 21.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) you send a message (c) the phone is lost (d) the app is closed
22. 22.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap Back
    3. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
23. 23.🔢 In a quiz-app flow, which comes first: “read a question” or “tap “Start quiz””? (a) tap “Start quiz” (b) read a question
24. 24.🧭 Which part of navigation shows 3 to 5 icons? (a) a tab bar (b) the back button (c) a menu button
25. 25.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) text that can grow (d) icons with no labels
26. 26.Which colour pair is easy to read? (a) light grey on white (b) pale pink on white (c) yellow on white (d) black on yellow
27. 27.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
28. 28.🧭 What does the back button usually do? (a) opens settings (b) goes to the last screen (c) closes all apps (d) deletes the page
29. 29.🔢 In a photo-post flow, which comes LAST? (a) write a caption (b) take the photo (c) add a filter (d) post the photo
30. 30.🔢 In a sign-up flow, which comes LAST? (a) type name and email (b) see the home screen (c) tap “Sign up” (d) enter the code sent
31. 31.🎨 Is this about UI or UX: whether users get lost? (a) UX (b) UI
32. 32.Which of these is true of a wireframe? (a) has the real colours (b) is a quick sketch (c) looks like the real app (d) shows the real fonts
33. 33.True or false: a wireframe has no real colours. (a) False (b) True
34. 34.Which colour pair is easy to read? (a) yellow on white (b) red on green (c) white on dark green (d) dark blue on black
35. 35.💾 What number does this code show?
    let songs = ["Monsoon", "Kites", "Stars"];
    songs.push("Rain");
    songs.push("Ocean");
    show(songs.length);
36. 36.🎨 Fewer taps to finish a task usually means ___. (a) a bigger app (b) better UX (c) worse UX (d) more colours
37. 37.🖼️ In this wireframe (top to bottom), what is right above the search box?
    [ tab bar ]
    [ list of items ]
    [ filter buttons ]
    [ title text ]
    [ Add button ]
    [ search box ] (a) tab bar (b) filter buttons (c) title text (d) Add button
38. 38.Which of these is about UX (the experience)? (a) the button colours (b) the icon shapes (c) the font size (d) how users feel after
39. 39.🎨 UX stands for user ___. (a) express (b) extra (c) experience (d) example
40. 40.🔍 Which is the odd one out? (a) how fast a task is done (b) whether users get lost (c) the button colours (d) how easy sign-up is

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