App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 738 · 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 can hold many values in order? (a) a switch (b) a button (c) a single number (d) a list
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Back button: 52 px tall
   Next button: 68 px tall
   Start button: 36 px tall (a) Start (b) Back (c) Next
3. 3.💾 pop() takes off the last item. What does this code show?
   let songs = ["Sunrise", "Ocean", "Kites"];
   songs.pop();
   show(songs[songs.length - 1]); (a) Kites (b) Sunrise (c) Ocean
4. 4.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Menu → Pay → Item → Search → Shop → Cart
   Design B: Home → Item → Shop → Pay → Offers → Address (a) Design B (b) Design A
5. 5.💾 What does this code show? (Positions start at 0.)
   let notes = ["Maths", "Art", "Science"];
   show(notes[2]); (a) Science (b) Maths (c) Art
6. 6.🔢 In a quiz-app flow, which comes first: “read a question” or “tap “Start quiz””? (a) tap “Start quiz” (b) read a question
7. 7.Which of these fits saving on the phone? (a) photos on two devices (b) notes to read offline (c) chat messages to friends (d) a shared to-do list
8. 8.🖼️ In this wireframe (top to bottom), what is right below the top bar?
   [ tab bar ]
   [ search box ]
   [ top bar ]
   [ filter buttons ]
   [ big picture ] (a) big picture (b) tab bar (c) filter buttons (d) search box
9. 9.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the app is closed (c) the phone is lost (d) you send a message
10. 10.💾 In most code, the first item of a list is at position ___. (a) 10 (b) 1 (c) 2 (d) 0
11. 11.🔢 In a sign-up flow, which comes LAST? (a) type name and email (b) tap “Sign up” (c) see the home screen (d) enter the code sent
12. 12.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a type of font (d) a charging cable
13. 13.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a text label (d) a long animation
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.🎨 Fewer taps to finish a task usually means ___. (a) more colours (b) a bigger app (c) better UX (d) worse UX
16. 16.True or false: a final design uses the final pictures. (a) True (b) False
17. 17.🖼️ In this wireframe (top to bottom), what is right below the big picture?
    [ big picture ]
    [ filter buttons ]
    [ top bar ]
    [ Add button ] (a) Add button (b) filter buttons (c) top bar
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 17 px
    Caption: 24 px
    Title: 14 px
    Footer: 22 px
    Label: 18 px (a) Title (b) Caption (c) Footer (d) Hint
19. 19.True or false: a wireframe has no real colours. (a) False (b) True
20. 20.🔀 In a good flow, each screen should lead to ___. (a) a clear next step (b) a dead end (c) the same screen (d) a random page
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Size → Search
    Design B: Home → Results → Menu
22. 22.💾 What does this code show? (Positions start at 0.)
    let songs = ["Rain", "Kites", "Sunrise", "Monsoon", "Ocean"];
    show(songs[1]); (a) Sunrise (b) Kites (c) Monsoon (d) Rain
23. 23.🔢 In a photo-post flow, which comes first: “add a filter” or “take the photo”? (a) add a filter (b) take the photo
24. 24.🖼️ How many parts (boxes) does this wireframe have?
    [ Add button ]
    [ search box ]
    [ filter buttons ]
    [ Save button ]
25. 25.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
26. 26.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Cart → Menu → Item → Search
    Design B: Home → Shop → Results (a) Design B (b) Design A
27. 27.🔍 Which is the odd one out? (a) whether users get lost (b) the theme colours (c) how users feel after (d) how easy sign-up is
28. 28.🖼️ In this wireframe (top to bottom), what is right above the big picture?
    [ top bar ]
    [ Add button ]
    [ Save button ]
    [ big picture ] (a) Add button (b) top bar (c) Save button
29. 29.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) shortcut (d) dead end
30. 30.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Friend list”
    3. tap the Profile tab
    4. open “Friend list”
    5. tap Back
    Which screen are you on now? (a) Home (b) Search (c) Profile (d) Friend list
32. 32.🔢 In a food-order flow, which comes first: “open the menu” or “check the cart”? (a) check the cart (b) open the menu
33. 33.💾 What number does this code show?
    let points = 5;
    points = points - 2;
    points = points + 4;
    show(points);
34. 34.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap the Feed tab
    3. open “Score card”
    Which screen are you on now? (a) Video (b) Feed (c) Chat (d) Score card
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 10 px
    Menu: 19 px
    Footer: 16 px
    Body text: 19 px (a) Menu (b) Label (c) Body text (d) Footer
36. 36.Which of these is about UI (the look)? (a) how many taps it takes (b) how easy sign-up is (c) the theme colours (d) whether users get lost
37. 37.✏️ Why draw a wireframe before coding? (a) it saves data (b) it runs the app (c) it adds colours (d) changes are quick
38. 38.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 13 px
    Footer: 17 px
    Title: 13 px
    Caption: 19 px
    Menu: 23 px
40. 40.✏️ Do wireframes usually show the final colours? (a) Yes (b) No

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