App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 346 · 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.💾 What does this code show? (Positions start at 0.)
   let songs = ["Ocean", "Stars", "Sunrise", "Rain"];
   show(songs[0]); (a) Rain (b) Ocean (c) Stars (d) Sunrise
2. 2.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Feed tab
   2. tap the Chat tab
   3. open “Match report”
   4. tap the Feed tab
   5. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
3. 3.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ title text ]
   [ top bar ]
   [ Add button ]
   [ list of items ] (a) top bar (b) Add button (c) list of items (d) title text
4. 4.🖼️ How many parts (boxes) does this wireframe have?
   [ Add button ]
   [ search box ]
   [ Save button ]
   [ top bar ]
5. 5.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see the final score (b) pick an answer (c) see if it is right (d) read a question
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Size → Pay → Menu
   Design B: Home → Address → Offers → Shop → Pay → Menu
7. 7.Which of these is true of a wireframe? (a) has the real colours (b) shows where things go (c) looks like the real app (d) uses the final pictures
8. 8.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ list of items ]
   [ tab bar ]
   [ filter buttons ]
   [ top bar ] (a) filter buttons (b) list of items (c) top bar (d) tab bar
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 22 px
   Menu: 27 px
   Hint: 9 px
   Caption: 24 px (a) Menu (b) Hint (c) Caption (d) Label
10. 10.💾 Which can hold many values in order? (a) a switch (b) a list (c) a button (d) a single number
11. 11.💾 pop() takes off the last item. What does this code show?
    let songs = ["Rain", "Monsoon", "Kites", "Ocean", "Sunrise"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Monsoon (b) Ocean (c) Rain (d) Kites
12. 12.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a long animation (d) a text label
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Address → Cart
    Design B: Home → Offers → Pay → Results → Menu → Size
14. 14.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
15. 15.🔢 In a food-order flow, which comes FIRST? (a) open the menu (b) add it to the cart (c) track the order (d) pick a dish
16. 16.💾 Where should the app save your last game level: on the phone or in the cloud? (a) in the cloud (b) on the phone
17. 17.True or false: icons with no meaning is poor button design. (a) True (b) False
18. 18.Which of these fits saving in the cloud? (a) the sound on/off setting (b) your last game level (c) a draft you are typing (d) a shared to-do list
19. 19.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. open “Video”
    3. open “Edit photo”
    4. tap Back
    Which screen are you on now? (a) Video (b) Lessons (c) Badges (d) Edit photo
20. 20.True or false: how easy sign-up is is about UX (the experience). (a) False (b) True
21. 21.Which of these helps everyone use the app? (a) text that can grow (b) fast-flashing lights (c) tiny tap areas (d) colour as the only clue
22. 22.True or false: a shared to-do list fits saving in the cloud. (a) True (b) False
23. 23.Which of these is true of a tab bar? (a) opens a list of pages (b) undoes one move (c) hides extra links (d) sits at the bottom
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 9 px
    Body text: 16 px
    Footer: 19 px
    Hint: 25 px
    Menu: 24 px (a) Footer (b) Hint (c) Caption (d) Body text
25. 25.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. open “Match report”
    3. tap the Feed tab
    4. tap the Feed tab
    5. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
26. 26.🔢 In a photo-post flow, which comes first: “post the photo” or “take the photo”? (a) take the photo (b) post the photo
27. 27.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
28. 28.🔢 In a sign-up flow, which comes first: “open the app” or “make a password”? (a) make a password (b) open the app
29. 29.Which of these is true of a wireframe? (a) looks like the real app (b) shows the real fonts (c) has the real colours (d) is a quick sketch
30. 30.Which of these is about UI (the look)? (a) whether users get lost (b) the theme colours (c) how users feel after (d) how many taps it takes
31. 31.🧭 Where is a tab bar usually placed in a phone app? (a) at the bottom (b) nowhere (c) inside a button (d) in the middle
32. 32.🔀 Why plan the user flow before building? (a) to add more taps (b) to hide the buttons (c) to skip testing (d) so each step is clear
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap the Chat tab
    3. open “Edit photo”
    4. tap the Settings tab
    Which screen are you on now? (a) Settings (b) Map (c) Edit photo (d) Feed
34. 34.✏️ What is a wireframe? (a) a type of password (b) the finished app (c) a simple screen sketch (d) a charging cable
35. 35.💾 Saving data in the cloud lets you ___. (a) shrink the app (b) skip the internet (c) use it on any device (d) never need a password
36. 36.💾 What number does this code show?
    let stars = 4;
    stars = stars - 2;
    stars = stars + 5;
    show(stars);
37. 37.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Save button ]
    [ title text ]
    [ filter buttons ]
    [ tab bar ]
    [ big picture ]
    [ top bar ] (a) Save button (b) title text (c) top bar (d) filter buttons
38. 38.True or false: a final design looks like the real app. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) captions on videos (b) colour as the only clue (c) sudden loud sounds (d) tiny tap areas
40. 40.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 24 px tall. How many px taller must it be?

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