App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 491 · 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: 60 px tall
   Save button: 44 px tall
   Send button: 56 px tall
   Help button: 60 px tall
2. 2.🔍 Which is the odd one out? (a) sudden loud sounds (b) text that can grow (c) strong colour contrast (d) big touch targets
3. 3.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
4. 4.💾 pop() takes off the last item. What does this code show?
   let notes = ["Maths", "Sports", "Music", "Hindi", "Art"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Hindi (b) Music (c) Sports (d) Maths
5. 5.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
6. 6.🔍 Which is the odd one out? (a) the icon shapes (b) how many taps it takes (c) the button colours (d) the theme colours
7. 7.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ tab bar ]
   [ menu icon ]
   [ Add button ]
   [ list of items ]
   [ filter buttons ]
   [ Save button ] (a) menu icon (b) Add button (c) Save button (d) filter buttons
8. 8.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Start button: 44 px tall
   Cancel button: 40 px tall
   Help button: 44 px tall
9. 9.True or false: strong colour contrast is poor button design. (a) True (b) False
10. 10.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 68 px tall
    Next button: 28 px tall
    Start button: 60 px tall (a) Next (b) Cancel (c) Start
11. 11.🔍 Which is the odd one out? (a) colour as the only clue (b) fast-flashing lights (c) icons with no labels (d) big touch targets
12. 12.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Offers → Item
    Design B: Home → Search → Address → Shop → Cart → Offers → Size
13. 13.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
14. 14.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
15. 15.🔢 In a sign-up flow, which comes first: “type name and email” or “open the app”? (a) open the app (b) type name and email
16. 16.🧭 Which part of navigation hides extra links? (a) the back button (b) a tab bar (c) a menu button
17. 17.🔍 Which is the odd one out? (a) text that can grow (b) strong colour contrast (c) labels on every icon (d) icons with no labels
18. 18.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Science", "Art", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Maths (b) Science (c) Sports (d) Art
19. 19.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. open “Edit photo”
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
20. 20.Which of these is about UI (the look)? (a) how users feel after (b) the screen layout (c) how easy sign-up is (d) how fast a task is done
21. 21.🔀 What is a user flow? (a) a charging cable (b) a type of font (c) the path through screens (d) a colour theme
22. 22.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
23. 23.💾 What is a variable? (a) a picture (b) a named box for a value (c) a type of screen (d) a phone setting
24. 24.🔀 In a good flow, each screen should lead to ___. (a) a clear next step (b) a dead end (c) a random page (d) the same screen
25. 25.🔢 In a photo-post flow, which comes FIRST? (a) add a filter (b) write a caption (c) open the camera screen (d) take the photo
26. 26.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap Back
    3. open “Edit photo”
    4. tap Back
    Which screen are you on now? (a) Friend list (b) Feed (c) Chat (d) Edit photo
27. 27.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) text that can grow (d) icons with no labels
28. 28.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
29. 29.🔢 In a quiz-app flow, which comes first: “see the final score” or “read a question”? (a) read a question (b) see the final score
30. 30.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
31. 31.💾 pop() takes off the last item. What does this code show?
    let friends = ["Riya", "Arjun", "Kabir", "Meera"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Kabir (b) Riya (c) Arjun (d) Meera
32. 32.True or false: your last game level fits saving on the phone. (a) True (b) False
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. tap the Chat tab
    3. tap the Settings tab
    4. open “Score card”
    Which screen are you on now? (a) Help page (b) Score card (c) Chat (d) Feed
34. 34.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. open “Badges”
    3. open “Edit photo”
    4. tap Back
    5. tap the Feed tab
    How many times must you tap Back to reach the main screen of this tab?
35. 35.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) that tab’s main screen (c) the last app used (d) a random page
36. 36.💾 pop() takes off the last item. What does this code show?
    let notes = ["Science", "Music", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Science (c) Sports
37. 37.🧭 Why should every screen show where you are? (a) to look busy (b) so users do not get lost (c) to hide the menu (d) to use more battery
38. 38.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Menu → Pens → Shop
    Design B: Home → Item → Results → Cart → Pay → Offers → Address
39. 39.🎨 Is this about UI or UX: how easy sign-up is? (a) UX (b) UI
40. 40.Which of these is true of a wireframe? (a) uses the final pictures (b) has the real colours (c) uses plain grey boxes (d) shows the real fonts

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