App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 450 · 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: looks like the real app? (a) a wireframe (b) a final design
2. 2.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) open the menu (b) check the cart (c) track the order (d) pay for the order
3. 3.Which of these is true of a tab bar? (a) sits at the bottom (b) opens a list of pages (c) hides extra links (d) goes to the last screen
4. 4.💾 What number does this code show?
   let score = 8;
   score = score - 3;
   score = score + 2;
   show(score);
5. 5.🧭 Which part of navigation shows 3 to 5 icons? (a) a tab bar (b) the back button (c) a menu button
6. 6.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
7. 7.True or false: a draft you are typing fits saving in the cloud. (a) False (b) True
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. open “Help page”
   3. tap Back
   4. tap the Profile tab
   How many times must you tap Back to reach the main screen of this tab?
9. 9.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
10. 10.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Edit photo”
    3. tap the Profile tab
    Which screen are you on now? (a) Profile (b) Search (c) Home (d) Edit photo
12. 12.🔍 Which is the odd one out? (a) how users feel after (b) how many taps it takes (c) the button colours (d) how easy sign-up is
13. 13.🔢 In a photo-post flow, which comes FIRST? (a) write a caption (b) open the camera screen (c) take the photo (d) add a filter
14. 14.🔘 Our rule: buttons are at least 48 px tall. The Start button is 20 px tall. How many px taller must it be?
15. 15.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
16. 16.🎨 Is this about UI or UX: how many taps it takes? (a) UI (b) UX
17. 17.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) tap “Start quiz” (b) pick an answer (c) see the final score (d) read a question
18. 18.💾 What number does this code show?
    let songs = ["Kites", "Ocean", "Rain", "Stars"];
    songs.push("Sunrise");
    songs.push("Monsoon");
    show(songs.length);
19. 19.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
20. 20.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Size → Menu → Pay → Item
    Design B: Home → Menu → Size → Offers → Item → Shop
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 28 px
    Menu: 10 px
    Body text: 21 px
    Hint: 17 px (a) Hint (b) Body text (c) Menu (d) Label
23. 23.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) a clear next step (d) the same screen
24. 24.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Shop → Offers → Pens → Search → Item
    Design B: Home → Results → Size → Confirm
25. 25.♿ A screen has 8 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
26. 26.♿ 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
27. 27.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ Save button ]
    [ tab bar ]
    [ menu icon ]
    [ title text ] (a) tab bar (b) menu icon (c) title text
28. 28.♿ A screen has 12 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 24 px
    Menu: 17 px
    Title: 26 px
    Hint: 13 px (a) Footer (b) Title (c) Hint (d) Menu
30. 30.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. open “Score card”
    3. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
31. 31.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Map”
    3. open “Edit photo”
    4. tap Back
    5. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 15 px
    Body text: 18 px
    Menu: 12 px
    Footer: 13 px
34. 34.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
35. 35.🧭 Tapping a tab usually takes you to ___. (a) a random page (b) the last app used (c) that tab’s main screen (d) the phone settings
36. 36.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) pick a dish (c) add it to the cart (d) check the cart
37. 37.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. tap Back
    3. tap the Chat tab
    4. tap the Chat tab
    5. open “Video”
    Which screen are you on now? (a) Score card (b) Feed (c) Chat (d) Video
38. 38.💾 Data saved only on the phone is lost when ___. (a) the phone is lost (b) the app is closed (c) you send a message (d) the screen turns off
39. 39.🔢 In a quiz-app flow, which comes LAST? (a) tap “Start quiz” (b) pick an answer (c) see if it is right (d) see the final score
40. 40.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Item → Menu
    Design B: Home → Pay → Menu → Shop → Cart → Size → Results (a) Design B (b) Design A

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