App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 4 · 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) the theme colours (b) the icon shapes (c) the font size (d) how fast a task is done
2. 2.♿ A screen has 9 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
3. 3.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Cancel button: 68 px tall
   Save button: 52 px tall
   Send button: 52 px tall
   Help button: 24 px tall (a) Save (b) Help (c) Send (d) Cancel
4. 4.💾 What number does this code show?
   let friends = ["Aman", "Arjun", "Zoya", "Meera"];
   friends.push("Kabir");
   friends.push("Riya");
   show(friends.length);
5. 5.💾 Saving data in the cloud lets you ___. (a) never need a password (b) shrink the app (c) use it on any device (d) skip the internet
6. 6.Which colour pair is hard to read? (a) pale pink on white (b) white on dark green (c) black on yellow (d) black on pale grey
7. 7.🧭 About how many tabs suit a tab bar best? (a) 1 (b) 20 (c) 3 to 5 (d) 10 to 12
8. 8.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Shop → Confirm
   Design B: Home → Pens → Address → Pay (a) Design A (b) Design B
9. 9.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
10. 10.🔘 Our rule: buttons are at least 48 px tall. The Help button is 28 px tall. How many px taller must it be?
11. 11.💾 pop() takes off the last item. What does this code show?
    let friends = ["Aman", "Riya", "Arjun", "Zoya", "Kabir"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Aman (b) Riya (c) Zoya (d) Arjun
12. 12.🔢 In a food-order flow, which comes first: “pay for the order” or “track the order”? (a) pay for the order (b) track the order
13. 13.True or false: icons with no meaning is poor button design. (a) True (b) False
14. 14.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
15. 15.Which of these is about UI (the look)? (a) whether users get lost (b) how easy sign-up is (c) the screen layout (d) how fast a task is done
16. 16.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a wireframe (b) a final design
17. 17.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
18. 18.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) text that can grow (d) sudden loud sounds
19. 19.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a type of font (d) a charging cable
20. 20.🖼️ In this wireframe (top to bottom), what is right below the list of items?
    [ list of items ]
    [ Save button ]
    [ top bar ]
    [ search box ]
    [ menu icon ]
    [ tab bar ] (a) search box (b) Save button (c) menu icon (d) tab bar
21. 21.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
22. 22.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 48 px tall
    Help button: 36 px tall
    Save button: 64 px tall
23. 23.Which colour pair is hard to read? (a) white on dark green (b) black on pale grey (c) light grey on white (d) black on yellow
24. 24.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Match report”
    3. tap the Profile tab
    Which screen are you on now? (a) Profile (b) Search (c) Home (d) Match report
25. 25.💾 What number does this code show?
    let lives = 4;
    lives = lives - 3;
    lives = lives + 3;
    show(lives);
26. 26.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
27. 27.🎨 Is this about UI or UX: the font size? (a) UX (b) UI
28. 28.🔢 In a food-order flow, which comes first: “pay for the order” or “check the cart”? (a) check the cart (b) pay for the order
29. 29.🔍 Which is the odd one out? (a) whether users get lost (b) how users feel after (c) how many taps it takes (d) the button colours
30. 30.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ Save button ]
    [ filter buttons ]
    [ list of items ] (a) list of items (b) filter buttons (c) tab bar (d) Save button
31. 31.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Cart → Search → Results → Shop
    Design B: Home → Pay → Size → Search → Item → Address → Results (a) Design A (b) Design B
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Profile tab
    3. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. tap Back
    3. open “Help page”
    4. tap the Search tab
    5. open “Video”
    Which screen are you on now? (a) Help page (b) Home (c) Video (d) Map
35. 35.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Hint: 17 px
    Footer: 13 px
37. 37.True or false: a wireframe shows the real fonts. (a) False (b) True
38. 38.♿ Showing right or wrong only in red and green is a problem for ___. (a) the server (b) colour-blind users (c) the battery (d) fast typists
39. 39.True or false: strong colour contrast is good button design. (a) True (b) False
40. 40.🔢 In a food-order flow, which comes FIRST? (a) check the cart (b) pick a dish (c) track the order (d) open the menu

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