App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 564 · 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.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 19 px
   Title: 10 px
   Body text: 21 px
   Caption: 18 px (a) Title (b) Caption (c) Body text (d) Hint
2. 2.💾 What number does this code show?
   let coins = 4;
   coins = coins - 4;
   coins = coins + 5;
   show(coins);
3. 3.Which colour pair is easy to read? (a) yellow on white (b) dark blue on black (c) light grey on white (d) dark blue on white
4. 4.Which colour pair is hard to read? (a) black on yellow (b) dark blue on white (c) black on pale grey (d) red on green
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Friend list”
   2. tap the Feed tab
   3. open “Match report”
   4. tap Back
   5. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) a draft you are typing (d) chat messages to friends
7. 7.Which of these is true of a wireframe? (a) has no real colours (b) has the real colours (c) looks like the real app (d) shows the real fonts
8. 8.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 14 px
   Menu: 19 px
   Body text: 19 px
   Caption: 22 px (a) Title (b) Caption (c) Menu (d) Body text
10. 10.💾 Which works with no internet at all? (a) a cloud leaderboard (b) a cloud backup (c) a shared chat (d) data saved on the phone
11. 11.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
12. 12.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap the Home tab
    3. open “Help page”
    4. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
13. 13.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) dead end (d) shortcut
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Quiz tab
    2. tap the Lessons tab
    3. open “Score card”
    4. open “Edit photo”
    5. tap Back
    Which screen are you on now? (a) Lessons (b) Edit photo (c) Quiz (d) Score card
15. 15.🔍 Which is the odd one out? (a) sudden loud sounds (b) captions on videos (c) big touch targets (d) strong colour contrast
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Menu
    Design B: Home → Cart → Shop → Menu → Pay
17. 17.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 48 px tall
    Cancel button: 32 px tall
    Help button: 48 px tall
18. 18.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Friend list”
    3. tap the Home tab
    4. open “Badges”
    5. open “Video”
    Which screen are you on now? (a) Score card (b) Friend list (c) Badges (d) Video
19. 19.🎨 UI stands for user ___. (a) interface (b) internet (c) idea (d) input
20. 20.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
21. 21.🔢 In a food-order flow, which comes first: “track the order” or “pick a dish”? (a) pick a dish (b) track the order
22. 22.♿ A screen has 10 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
23. 23.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
24. 24.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) plays music (d) takes photos
25. 25.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
26. 26.True or false: a big, easy tap area is poor button design. (a) True (b) False
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Item → Size → Offers
    Design B: Home → Pay → Pens
28. 28.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) type name and email (b) make a password (c) enter the code sent (d) open the app
29. 29.🖼️ In this wireframe (top to bottom), what is right above the Add button?
    [ menu icon ]
    [ filter buttons ]
    [ top bar ]
    [ Add button ] (a) filter buttons (b) top bar (c) menu icon
30. 30.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap the Home tab
    3. open “Help page”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
31. 31.Which of these helps everyone use the app? (a) tiny tap areas (b) sudden loud sounds (c) fast-flashing lights (d) labels on every icon
32. 32.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap the Chat tab
    3. tap the Feed tab
    4. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
33. 33.💾 What number does this code show?
    let score = 7;
    score = score - 2;
    score = score + 2;
    show(score);
34. 34.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. tap the Lessons tab
    3. tap the Lessons tab
    Which screen are you on now? (a) Map (b) Quiz (c) Me (d) Lessons
35. 35.Which of these is about UI (the look)? (a) how many taps it takes (b) the button colours (c) how users feel after (d) how fast a task is done
36. 36.♿ A screen has 10 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 18 px
    Menu: 20 px
    Caption: 18 px
    Title: 19 px
    Body text: 13 px (a) Caption (b) Body text (c) Menu (d) Label
38. 38.Which of these is true of a final design? (a) uses plain grey boxes (b) shows where things go (c) is a quick sketch (d) has the real colours
39. 39.Which of these fits saving on the phone? (a) photos on two devices (b) a class leaderboard (c) a shared to-do list (d) notes to read offline
40. 40.♿ Why add captions to videos? (a) to add colour (b) to slow them down (c) so anyone can follow (d) to hide the sound

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students