App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 543 · 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.💾 What does this code show? (Positions start at 0.)
   let notes = ["Sports", "Hindi", "Maths", "Music"];
   show(notes[2]); (a) Music (b) Maths (c) Sports (d) Hindi
2. 2.🎨 UX stands for user ___. (a) experience (b) example (c) extra (d) express
3. 3.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Badges”
   2. open “Video”
   3. tap the Home tab
   4. open “Map”
   5. tap Back
   Which screen are you on now? (a) Badges (b) Home (c) Video (d) Map
4. 4.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
   [ list of items ]
   [ title text ]
   [ menu icon ]
   [ tab bar ]
   [ search box ]
   [ Save button ] (a) menu icon (b) title text (c) search box (d) list of items
5. 5.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Pay → Menu
   Design B: Home → Offers → Cart → Results → Address → Pens
6. 6.Which of these fits saving in the cloud? (a) your last game level (b) chat messages to friends (c) a draft you are typing (d) notes to read offline
7. 7.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) makes text tiny (d) plays music
8. 8.Which colour pair is hard to read? (a) pale pink on white (b) black on pale grey (c) white on dark green (d) dark blue on white
9. 9.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Help page”
   2. tap the Home tab
   3. open “Video”
   4. open “Video”
   Which screen are you on now? (a) Help page (b) Home (c) Video (d) Search
10. 10.💾 What does this code show? (Positions start at 0.)
    let notes = ["Science", "Maths", "Art"];
    show(notes[0]); (a) Maths (b) Art (c) Science
11. 11.💾 What does this code show? (Positions start at 0.)
    let friends = ["Kabir", "Riya", "Meera", "Zoya"];
    show(friends[1]); (a) Zoya (b) Meera (c) Riya (d) Kabir
12. 12.Which of these is true of a final design? (a) shows where things go (b) is a quick sketch (c) has no real colours (d) has the real colours
13. 13.🔘 Our rule: buttons are at least 48 px tall. The Send button is 20 px tall. How many px taller must it be?
14. 14.🔢 In a quiz-app flow, which comes first: “see the final score” or “see if it is right”? (a) see if it is right (b) see the final score
15. 15.💾 What number does this code show?
    let friends = ["Arjun", "Kabir"];
    friends.push("Meera");
    friends.push("Riya");
    show(friends.length);
16. 16.🔀 Why plan the user flow before building? (a) to hide the buttons (b) to add more taps (c) to skip testing (d) so each step is clear
17. 17.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
18. 18.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. tap the Chat tab
    3. open “Badges”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
19. 19.Which of these is true of a wireframe? (a) uses plain grey boxes (b) uses the final pictures (c) shows the real fonts (d) has the real colours
20. 20.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “see the home screen”? (a) tap “Sign up” (b) see the home screen
21. 21.True or false: the icon shapes is about UI (the look). (a) True (b) False
22. 22.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
23. 23.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Done button: 60 px tall
    Help button: 48 px tall
    Cancel button: 28 px tall (a) Next (b) Help (c) Done (d) Cancel
24. 24.True or false: how easy sign-up is is about UI (the look). (a) True (b) False
25. 25.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
26. 26.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 32 px tall
    Back button: 48 px tall
    Help button: 40 px tall
27. 27.True or false: a big, easy tap area is good button design. (a) False (b) True
28. 28.✏️ A box with a cross in a wireframe usually means ___. (a) a closed app (b) an error (c) delete this (d) a picture goes here
29. 29.💾 What does this code show? (Positions start at 0.)
    let songs = ["Rain", "Stars", "Monsoon", "Kites"];
    show(songs[1]); (a) Rain (b) Monsoon (c) Stars (d) Kites
30. 30.✏️ Why draw a wireframe before coding? (a) it adds colours (b) it saves data (c) changes are quick (d) it runs the app
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 21 px
    Label: 28 px
    Caption: 17 px
    Footer: 11 px
    Hint: 28 px (a) Body text (b) Footer (c) Label (d) Caption
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 18 px
    Title: 20 px
    Hint: 12 px
    Menu: 27 px
    Caption: 17 px (a) Menu (b) Hint (c) Body text (d) Title
33. 33.True or false: how users feel after is about UI (the look). (a) False (b) True
34. 34.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
35. 35.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Menu
    Design B: Home → Pay → Shop → Search → Item → Confirm (a) Design B (b) Design A
36. 36.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
37. 37.♿ Accessibility means an app works for ___. (a) everyone (b) only experts (c) nobody (d) only the coder
38. 38.Which of these is true of the back button? (a) undoes one move (b) hides extra links (c) opens a list of pages (d) switches main sections
39. 39.💾 What number does this code show?
    let stars = 5;
    stars = stars - 2;
    stars = stars + 1;
    show(stars);
40. 40.🖼️ How many parts (boxes) does this wireframe have?
    [ big picture ]
    [ list of items ]
    [ search box ]
    [ Add button ]
    [ menu icon ]
    [ tab bar ]

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