App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 102 · 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: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Cancel button: 64 px tall
   Save button: 48 px tall
   Next button: 44 px tall
   Help button: 40 px tall
2. 2.🔢 In a food-order flow, which comes first: “pay for the order” or “pick a dish”? (a) pay for the order (b) pick a dish
3. 3.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. tap the Me tab
   3. tap the Lessons tab
   4. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
4. 4.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. open “Help page”
   3. tap the Settings tab
   4. open “Friend list”
   How many times must you tap Back to reach the main screen of this tab?
5. 5.🌗 Is light grey on white easy or hard to read on a button? (a) easy to read (b) hard to read
6. 6.🖼️ How many parts (boxes) does this wireframe have?
   [ top bar ]
   [ big picture ]
   [ Save button ]
   [ title text ]
   [ filter buttons ]
7. 7.True or false: the screen layout is about UI (the look). (a) False (b) True
8. 8.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
9. 9.🧭 Which part of navigation shows 3 to 5 icons? (a) a tab bar (b) a menu button (c) the back button
10. 10.💾 What is a variable? (a) a type of screen (b) a named box for a value (c) a picture (d) a phone setting
11. 11.♿ Accessibility means an app works for ___. (a) everyone (b) only experts (c) only the coder (d) nobody
12. 12.🔢 In a quiz-app flow, which comes FIRST? (a) tap “Start quiz” (b) read a question (c) see if it is right (d) pick an answer
13. 13.💾 Which can hold many values in order? (a) a list (b) a button (c) a switch (d) a single number
14. 14.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
15. 15.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
16. 16.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 48 px tall
    Back button: 44 px tall
    Start button: 52 px tall (a) Next (b) Start (c) Back
17. 17.Which of these is true of a final design? (a) is a quick sketch (b) has no real colours (c) uses the final pictures (d) uses plain grey boxes
18. 18.🖼️ How many parts (boxes) does this wireframe have?
    [ title text ]
    [ Add button ]
    [ big picture ]
    [ top bar ]
19. 19.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) in the cloud (b) on the phone
20. 20.Which of these is about UX (the experience)? (a) how many taps it takes (b) the theme colours (c) the icon shapes (d) the screen layout
21. 21.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 60 px tall
    Help button: 68 px tall
    Send button: 56 px tall
    Next button: 36 px tall (a) Start (b) Send (c) Help (d) Next
23. 23.True or false: a final design shows the real fonts. (a) False (b) True
24. 24.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Pens → Address
    Design B: Home → Results → Search → Size → Pay → Offers → Item (a) Design A (b) Design B
25. 25.Which colour pair is easy to read? (a) white on black (b) light grey on white (c) red on green (d) yellow on white
26. 26.🔘 Our rule: buttons are at least 48 px tall. The Start button is 36 px tall. How many px taller must it be?
27. 27.🔘 Our rule: buttons are at least 48 px tall. The Next button is 36 px tall. How many px taller must it be?
28. 28.True or false: icons with no meaning is poor button design. (a) False (b) True
29. 29.🎨 UI stands for user ___. (a) idea (b) interface (c) input (d) internet
30. 30.🔘 Our rule: buttons are at least 48 px tall. The Save button is 28 px tall. How many px taller must it be?
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Pens → Confirm → Results → Cart
    Design B: Home → Shop → Results
32. 32.💾 pop() takes off the last item. What does this code show?
    let songs = ["Monsoon", "Sunrise", "Stars"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Stars (b) Monsoon (c) Sunrise
33. 33.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) plays music (d) makes text tiny
34. 34.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Address
    Design B: Home → Pay → Offers → Item → Size → Address (a) Design A (b) Design B
35. 35.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) shortcut (c) home screen (d) dead end
36. 36.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ filter buttons ]
    [ top bar ]
    [ title text ] (a) top bar (b) search box (c) filter buttons (d) title text
37. 37.🧭 Which part of navigation switches main sections? (a) a menu button (b) a tab bar (c) the back button
38. 38.True or false: a final design looks like the real app. (a) True (b) False
39. 39.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) the same screen (c) a clear next step (d) a dead end
40. 40.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. open “Badges”
    3. tap the Home tab
    4. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?

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