App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 721 · 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. How many texts on this screen are too small?
   Body text: 10 px
   Title: 23 px
   Label: 10 px
   Footer: 16 px
2. 2.True or false: a shared to-do list fits saving in the cloud. (a) False (b) True
3. 3.True or false: the icon shapes is about UX (the experience). (a) True (b) False
4. 4.💾 What number does this code show?
   let lives = 3;
   lives = lives - 2;
   lives = lives + 2;
   show(lives);
5. 5.♿ A screen has 11 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
6. 6.🔍 Which is the odd one out? (a) text that can grow (b) big touch targets (c) fast-flashing lights (d) labels on every icon
7. 7.True or false: the theme colours is about UX (the experience). (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) the button colours (b) the screen layout (c) how many taps it takes (d) the theme colours
9. 9.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
10. 10.Which of these is true of a final design? (a) has no real colours (b) has the real colours (c) uses plain grey boxes (d) shows where things go
11. 11.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) a closed app (c) a picture goes here (d) an error
12. 12.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Menu → Cart → Search → Address → Shop
    Design B: Home → Results → Shop → Size → Pens
13. 13.🖼️ In this wireframe (top to bottom), what is right above the search box?
    [ top bar ]
    [ big picture ]
    [ menu icon ]
    [ search box ] (a) menu icon (b) big picture (c) top bar
14. 14.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Aman", "Kabir", "Riya"];
    show(friends[0]); (a) Kabir (b) Arjun (c) Aman (d) Riya
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 26 px
    Caption: 22 px
    Title: 13 px
    Hint: 17 px (a) Caption (b) Title (c) Menu (d) Hint
16. 16.Which of these is about UI (the look)? (a) how users feel after (b) the font size (c) whether users get lost (d) how easy sign-up is
17. 17.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) everyone (d) nobody
18. 18.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 64 px tall
    Save button: 24 px tall
    Help button: 60 px tall (a) Back (b) Save (c) Help
19. 19.Which of these is true of a wireframe? (a) looks like the real app (b) uses the final pictures (c) shows where things go (d) has the real colours
20. 20.🔍 Which is the odd one out? (a) how many taps it takes (b) how easy sign-up is (c) how users feel after (d) the button colours
21. 21.🎨 Who should you test the UX with? (a) the app icon (b) only yourself (c) nobody (d) real users
22. 22.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Score card”
    3. tap Back
    Which screen are you on now? (a) Home (b) Profile (c) Score card (d) Search
23. 23.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
24. 24.🎨 Is this about UI or UX: how easy sign-up is? (a) UX (b) UI
25. 25.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Size → Shop
    Design B: Home → Confirm → Cart → Pay → Offers (a) Design A (b) Design B
26. 26.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a random page (c) a dead end (d) a clear next step
27. 27.💾 pop() takes off the last item. What does this code show?
    let friends = ["Riya", "Zoya", "Aman", "Kabir", "Meera"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Aman (b) Zoya (c) Kabir (d) Riya
28. 28.💾 What is a variable? (a) a picture (b) a named box for a value (c) a type of screen (d) a phone setting
29. 29.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Address → Pens → Item → Cart → Pay
    Design B: Home → Size → Results
30. 30.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
31. 31.💾 pop() takes off the last item. What does this code show?
    let songs = ["Kites", "Ocean", "Sunrise", "Stars", "Rain"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Kites (c) Sunrise (d) Stars
32. 32.True or false: a final design uses plain grey boxes. (a) False (b) True
33. 33.True or false: a final design uses the final pictures. (a) True (b) False
34. 34.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
35. 35.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
36. 36.🧭 About how many tabs suit a tab bar best? (a) 3 to 5 (b) 20 (c) 1 (d) 10 to 12
37. 37.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
38. 38.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Results → Cart
    Design B: Home → Item → Offers → Pens → Results → Pay → Confirm (a) Design A (b) Design B
39. 39.🔢 In a quiz-app flow, which comes first: “pick an answer” or “see the final score”? (a) see the final score (b) pick an answer
40. 40.Which of these is true of a final design? (a) has no real colours (b) is a quick sketch (c) uses the final pictures (d) shows where things go

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