App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 277 · 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.🔍 Which is the odd one out? (a) labels on every icon (b) icons with no labels (c) captions on videos (d) text that can grow
2. 2.💾 What number does this code show?
   let songs = ["Ocean", "Sunrise"];
   songs.push("Monsoon");
   show(songs.length);
3. 3.🔘 Our rule: buttons are at least 48 px tall. The Send button is 28 px tall. How many px taller must it be?
4. 4.Which colour pair is easy to read? (a) black on pale grey (b) dark blue on black (c) light grey on white (d) yellow on white
5. 5.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Offers → Pay
   Design B: Home → Search → Offers → Size → Results (a) Design A (b) Design B
6. 6.💾 What is a variable? (a) a type of screen (b) a picture (c) a phone setting (d) a named box for a value
7. 7.🔘 Our rule: buttons are at least 48 px tall. The Next button is 32 px tall. How many px taller must it be?
8. 8.Which of these is true of a wireframe? (a) has the real colours (b) looks like the real app (c) is a quick sketch (d) uses the final pictures
9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Send button: 28 px tall
   Done button: 68 px tall
   Next button: 60 px tall (a) Done (b) Next (c) Send
10. 10.Which of these is true of a menu button? (a) opens a list of pages (b) switches main sections (c) sits at the bottom (d) goes to the last screen
11. 11.🖼️ How many parts (boxes) does this wireframe have?
    [ filter buttons ]
    [ tab bar ]
    [ big picture ]
    [ top bar ]
12. 12.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
13. 13.♿ Showing right or wrong only in red and green is a problem for ___. (a) the server (b) colour-blind users (c) fast typists (d) the battery
14. 14.🔢 In a food-order flow, which comes first: “check the cart” or “open the menu”? (a) check the cart (b) open the menu
15. 15.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Match report”
    2. open “Help page”
    3. tap Back
    Which screen are you on now? (a) Help page (b) Match report (c) Quiz (d) Lessons
16. 16.True or false: a final design uses the final pictures. (a) False (b) True
17. 17.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Results → Address
    Design B: Home → Shop → Cart → Menu → Confirm → Size
18. 18.True or false: a final design shows the real fonts. (a) False (b) True
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Menu → Size → Offers → Search
    Design B: Home → Offers → Confirm → Pay
20. 20.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
21. 21.💾 What number does this code show?
    let stars = 4;
    stars = stars - 1;
    stars = stars + 5;
    show(stars);
22. 22.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
23. 23.🖼️ In this wireframe (top to bottom), what is right below the top bar?
    [ top bar ]
    [ list of items ]
    [ tab bar ]
    [ search box ] (a) tab bar (b) search box (c) list of items
24. 24.💾 What number does this code show?
    let score = 3;
    score = score - 1;
    score = score + 4;
    show(score);
25. 25.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. tap the Search tab
    3. open “Video”
    4. open “Video”
    Which screen are you on now? (a) Score card (b) Home (c) Search (d) Video
26. 26.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “open the app”? (a) tap “Sign up” (b) open the app
27. 27.🔀 What is a user flow? (a) a colour theme (b) a type of font (c) a charging cable (d) the path through screens
28. 28.🔢 In a photo-post flow, which comes LAST? (a) write a caption (b) post the photo (c) add a filter (d) take the photo
29. 29.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. open “Friend list”
    3. tap Back
    Which screen are you on now? (a) Feed (b) Chat (c) Badges (d) Friend list
30. 30.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
31. 31.💾 What does this code show? (Positions start at 0.)
    let notes = ["Music", "Hindi", "Science", "Sports"];
    show(notes[2]); (a) Music (b) Sports (c) Hindi (d) Science
32. 32.Which colour pair is easy to read? (a) white on dark green (b) light grey on white (c) pale pink on white (d) yellow on white
33. 33.True or false: a wireframe shows where things go. (a) False (b) True
34. 34.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ title text ]
    [ top bar ]
    [ tab bar ]
    [ Save button ]
    [ Add button ] (a) title text (b) tab bar (c) top bar (d) Add button
35. 35.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
36. 36.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
37. 37.Which of these is about UX (the experience)? (a) the font size (b) the theme colours (c) the icon shapes (d) whether users get lost
38. 38.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) colour as the only clue (d) captions on videos
39. 39.🎨 Who should you test the UX with? (a) only yourself (b) the app icon (c) nobody (d) real users
40. 40.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Item → Shop → Size → Address → Menu
    Design B: Home → Menu → Size → Results (a) Design B (b) Design A

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