App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 636 · 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 works with no internet at all? (a) data saved on the phone (b) a shared chat (c) a cloud leaderboard (d) a cloud backup
2. 2.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 22 px
   Title: 10 px
   Menu: 24 px
   Caption: 19 px (a) Title (b) Footer (c) Caption (d) Menu
3. 3.True or false: a wireframe has the real colours. (a) True (b) False
4. 4.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
5. 5.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
6. 6.True or false: a big, easy tap area is poor button design. (a) False (b) True
7. 7.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Start button: 56 px tall
   Save button: 60 px tall
   Next button: 40 px tall
   Help button: 56 px tall
8. 8.💾 Saving data in the cloud lets you ___. (a) shrink the app (b) use it on any device (c) never need a password (d) skip the internet
9. 9.🎨 Who should you test the UX with? (a) nobody (b) the app icon (c) real users (d) only yourself
10. 10.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 28 px tall. How many px taller must it be?
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 26 px
    Body text: 16 px
    Title: 26 px
    Menu: 10 px (a) Body text (b) Title (c) Menu (d) Footer
12. 12.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) so anyone can follow (d) to slow them down
13. 13.True or false: how fast a task is done is about UX (the experience). (a) True (b) False
14. 14.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 48 px tall
    Start button: 52 px tall
    Next button: 52 px tall
    Save button: 24 px tall (a) Start (b) Send (c) Save (d) Next
15. 15.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
16. 16.True or false: space between buttons is good button design. (a) False (b) True
17. 17.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Badges”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
18. 18.Which colour pair is easy to read? (a) red on green (b) yellow on white (c) dark blue on white (d) pale pink on white
19. 19.💾 What number does this code show?
    let friends = ["Arjun", "Aman", "Kabir"];
    friends.push("Zoya");
    show(friends.length);
20. 20.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. open “Friend list”
    3. open “Edit photo”
    Which screen are you on now? (a) Home (b) Edit photo (c) Friend list (d) Help page
21. 21.True or false: how users feel after is about UX (the experience). (a) True (b) False
22. 22.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) shortcut (c) dead end (d) home screen
23. 23.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
24. 24.♿ What should every icon-only button have for screen readers? (a) a text label (b) a bright colour (c) a sound (d) a long animation
25. 25.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pay → Cart → Confirm
    Design B: Home → Pay → Pens → Cart → Address
26. 26.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 52 px tall
    Start button: 64 px tall
    Back button: 60 px tall
    Done button: 64 px tall
27. 27.🔀 Why plan the user flow before building? (a) to add more taps (b) so each step is clear (c) to hide the buttons (d) to skip testing
28. 28.🎨 Fewer taps to finish a task usually means ___. (a) better UX (b) more colours (c) worse UX (d) a bigger app
29. 29.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ filter buttons ]
    [ Add button ]
    [ big picture ]
    [ list of items ]
    [ tab bar ] (a) big picture (b) filter buttons (c) Add button (d) tab bar
30. 30.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
31. 31.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
32. 32.💾 What number does this code show?
    let coins = 8;
    coins = coins - 2;
    coins = coins + 1;
    show(coins);
33. 33.Which of these is true of the back button? (a) goes to the last screen (b) hides extra links (c) sits at the bottom (d) opens a list of pages
34. 34.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Menu → Cart → Pay → Offers → Pens
    Design B: Home → Address → Pens
36. 36.True or false: a big, easy tap area is good button design. (a) True (b) False
37. 37.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
38. 38.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. open “Score card”
    3. tap Back
    4. tap the Feed tab
    Which screen are you on now? (a) Help page (b) Feed (c) Score card (d) Chat
39. 39.Which of these is about UX (the experience)? (a) how fast a task is done (b) the theme colours (c) the icon shapes (d) the button colours
40. 40.🔘 Our rule: buttons are at least 48 px tall. The Send button is 28 px tall. How many px taller must it be?

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