App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 162 · 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.🔢 In a sign-up flow, which comes first: “open the app” or “make a password”? (a) make a password (b) open the app
2. 2.🔢 In a food-order flow, what comes right after “pay for the order”? (a) check the cart (b) add it to the cart (c) track the order (d) pick a dish
3. 3.🖼️ In this wireframe (top to bottom), what is right below the Add button?
   [ top bar ]
   [ Add button ]
   [ tab bar ]
   [ list of items ]
   [ title text ]
   [ menu icon ] (a) tab bar (b) menu icon (c) top bar (d) title text
4. 4.🔀 What is a user flow? (a) a charging cable (b) the path through screens (c) a type of font (d) a colour theme
5. 5.True or false: space between buttons is poor button design. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) text that can grow (d) icons with no labels
7. 7.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Item → Cart
   Design B: Home → Confirm → Offers → Item → Shop → Pens → Address (a) Design B (b) Design A
8. 8.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) how users feel after (d) the screen layout
9. 9.🔢 In a sign-up flow, which comes FIRST? (a) open the app (b) make a password (c) tap “Sign up” (d) see the home screen
10. 10.🔍 Which is the odd one out? (a) the button colours (b) how users feel after (c) the font size (d) the icon shapes
11. 11.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
12. 12.🔍 Which is the odd one out? (a) the font size (b) the button colours (c) the screen layout (d) how many taps it takes
13. 13.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 24 px tall
    Save button: 64 px tall
    Done button: 52 px tall (a) Done (b) Save (c) Start
14. 14.🧭 Which part of navigation undoes one move? (a) the back button (b) a tab bar (c) a menu button
15. 15.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
16. 16.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
17. 17.True or false: whether users get lost is about UI (the look). (a) True (b) False
18. 18.Which of these is true of a wireframe? (a) has the real colours (b) uses the final pictures (c) has no real colours (d) shows the real fonts
19. 19.🔀 A screen with no way forward or back is called a ___. (a) home screen (b) dead end (c) shortcut (d) tab bar
20. 20.🎨 UI stands for user ___. (a) idea (b) interface (c) internet (d) input
21. 21.Which of these is true of the back button? (a) opens a list of pages (b) hides extra links (c) undoes one move (d) shows 3 to 5 icons
22. 22.🎨 Is this about UI or UX: the theme colours? (a) UI (b) UX
23. 23.💾 pop() takes off the last item. What does this code show?
    let songs = ["Stars", "Kites", "Rain"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Kites (b) Stars (c) Rain
24. 24.Which colour pair is hard to read? (a) white on dark green (b) light grey on white (c) black on pale grey (d) black on yellow
25. 25.♿ A screen has 10 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
26. 26.🔢 In a photo-post flow, which comes first: “take the photo” or “write a caption”? (a) write a caption (b) take the photo
27. 27.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Item
    Design B: Home → Offers → Size → Item → Results → Search → Shop (a) Design A (b) Design B
28. 28.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 60 px tall
    Send button: 36 px tall
    Back button: 40 px tall
    Start button: 60 px tall
30. 30.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
31. 31.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Match report”
    2. tap Back
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
32. 32.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
33. 33.🎨 Is this about UI or UX: whether users get lost? (a) UX (b) UI
34. 34.True or false: photos on two devices fits saving on the phone. (a) False (b) True
35. 35.🔢 In a sign-up flow, which comes first: “see the home screen” or “make a password”? (a) see the home screen (b) make a password
36. 36.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
37. 37.♿ A screen has 12 icon buttons. Only 11 of them have a text label for screen readers. How many still need a label?
38. 38.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
39. 39.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap Back
    3. tap the Settings tab
    4. open “Friend list”
    5. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
40. 40.✏️ Do wireframes usually show the final colours? (a) No (b) Yes

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