App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 633 · 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.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a final design (b) a wireframe
2. 2.🧭 Which part of navigation hides extra links? (a) a menu button (b) the back button (c) a tab bar
3. 3.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
4. 4.💾 What does this code show? (Positions start at 0.)
   let songs = ["Ocean", "Sunrise", "Rain"];
   show(songs[1]); (a) Ocean (b) Sunrise (c) Rain
5. 5.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Match report”
   2. tap Back
   3. open “Friend list”
   4. tap the Search tab
   5. open “Map”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🔢 In a sign-up flow, which comes first: “open the app” or “enter the code sent”? (a) open the app (b) enter the code sent
7. 7.💾 What is a variable? (a) a phone setting (b) a type of screen (c) a picture (d) a named box for a value
8. 8.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
9. 9.True or false: a tiny 20 px button is poor button design. (a) True (b) False
10. 10.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Friend list”
    3. open “Match report”
    4. open “Edit photo”
    Which screen are you on now? (a) Friend list (b) Match report (c) Home (d) Edit photo
11. 11.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap Back
    3. tap the Feed tab
    4. open “Edit photo”
    5. open “Score card”
    Which screen are you on now? (a) Map (b) Feed (c) Score card (d) Edit photo
12. 12.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 56 px tall
    Next button: 44 px tall
    Cancel button: 40 px tall
    Send button: 56 px tall
13. 13.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
14. 14.Which of these is true of a menu button? (a) sits at the bottom (b) undoes one move (c) goes to the last screen (d) hides extra links
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. open “Edit photo”
    3. tap Back
    4. open “Video”
    5. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
16. 16.Which of these is about UI (the look)? (a) how users feel after (b) the theme colours (c) how fast a task is done (d) how easy sign-up is
17. 17.🎨 Is this about UI or UX: the font size? (a) UX (b) UI
18. 18.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
19. 19.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. open “Help page”
    3. tap Back
    4. tap the Chat tab
    5. open “Edit photo”
    Which screen are you on now? (a) Map (b) Feed (c) Edit photo (d) Help page
20. 20.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Friend list”
    3. tap the Profile tab
    4. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. open “Help page”
    3. tap Back
    4. open “Badges”
    Which screen are you on now? (a) Badges (b) Help page (c) Feed (d) Video
22. 22.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) read a question (c) see if it is right (d) tap “Start quiz”
23. 23.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
24. 24.Which colour pair is hard to read? (a) white on dark green (b) white on black (c) black on pale grey (d) yellow on white
25. 25.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 40 px tall
    Done button: 32 px tall
    Cancel button: 60 px tall
26. 26.Which of these makes the app harder to use? (a) strong colour contrast (b) labels on every icon (c) captions on videos (d) tiny tap areas
27. 27.🔀 Why plan the user flow before building? (a) to skip testing (b) so each step is clear (c) to add more taps (d) to hide the buttons
28. 28.♿ A screen has 5 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
29. 29.Which of these is true of a tab bar? (a) undoes one move (b) switches main sections (c) opens a list of pages (d) goes to the last screen
30. 30.🧭 Tapping a tab usually takes you to ___. (a) the last app used (b) a random page (c) the phone settings (d) that tab’s main screen
31. 31.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) text that can grow (d) tiny tap areas
32. 32.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Music", "Hindi", "Sports", "Science"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Hindi (b) Maths (c) Sports (d) Music
33. 33.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) a type of font (d) the path through screens
34. 34.🧭 What does the back button usually do? (a) deletes the page (b) closes all apps (c) opens settings (d) goes to the last screen
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 16 px
    Hint: 14 px
    Body text: 16 px
    Caption: 13 px
    Label: 10 px
36. 36.🧭 Why should every screen show where you are? (a) to hide the menu (b) to use more battery (c) so users do not get lost (d) to look busy
37. 37.Which of these is about UX (the experience)? (a) the icon shapes (b) how many taps it takes (c) the screen layout (d) the font size
38. 38.🖼️ How many parts (boxes) does this wireframe have?
    [ list of items ]
    [ Add button ]
    [ menu icon ]
    [ title text ]
    [ search box ]
    [ big picture ]
39. 39.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
40. 40.True or false: the theme colours is about UI (the look). (a) True (b) False

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