App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 17 · 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: has the real colours? (a) a wireframe (b) a final design
2. 2.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
3. 3.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Address → Size → Pens
   Design B: Home → Cart → Shop → Search → Offers → Results
4. 4.💾 Which works with no internet at all? (a) data saved on the phone (b) a shared chat (c) a cloud backup (d) a cloud leaderboard
5. 5.💾 What number does this code show?
   let notes = ["Music", "Science"];
   notes.push("Maths");
   notes.push("Art");
   show(notes.length);
6. 6.🔍 Which is the odd one out? (a) how users feel after (b) how easy sign-up is (c) whether users get lost (d) the theme colours
7. 7.🔢 In a photo-post flow, which comes FIRST? (a) post the photo (b) open the camera screen (c) add a filter (d) take the photo
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. open “Score card”
   3. tap Back
   4. open “Map”
   5. open “Badges”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🔀 Why plan the user flow before building? (a) to skip testing (b) to add more taps (c) so each step is clear (d) to hide the buttons
10. 10.Which of these is true of a tab bar? (a) switches main sections (b) goes to the last screen (c) hides extra links (d) opens a list of pages
11. 11.💾 What number does this code show?
    let notes = ["Maths", "Art"];
    notes.push("Sports");
    show(notes.length);
12. 12.💾 What does this code show? (Positions start at 0.)
    let notes = ["Sports", "Science", "Art", "Maths"];
    show(notes[1]); (a) Art (b) Science (c) Maths (d) Sports
13. 13.💾 What number does this code show?
    let points = 8;
    points = points - 4;
    points = points + 2;
    show(points);
14. 14.True or false: a final design is a quick sketch. (a) True (b) False
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. open “Friend list”
    3. tap Back
    4. tap the Profile tab
    Which screen are you on now? (a) Home (b) Profile (c) Map (d) Friend list
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 18 px
    Body text: 19 px
    Label: 9 px (a) Menu (b) Body text (c) Label
17. 17.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Item
    Design B: Home → Cart → Search → Confirm → Address → Pay → Shop (a) Design B (b) Design A
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Label: 15 px
    Caption: 10 px
19. 19.True or false: a wireframe has no real colours. (a) False (b) True
20. 20.Which of these is true of the back button? (a) opens a list of pages (b) switches main sections (c) goes to the last screen (d) hides extra links
21. 21.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
22. 22.🔀 In a good flow, each screen should lead to ___. (a) a dead end (b) a random page (c) a clear next step (d) the same screen
23. 23.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap the Me tab
    3. tap the Lessons tab
    4. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
24. 24.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
25. 25.🧭 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
26. 26.🔢 In a sign-up flow, which comes FIRST? (a) type name and email (b) tap “Sign up” (c) see the home screen (d) open the app
27. 27.🖼️ In this wireframe (top to bottom), what is right above the search box?
    [ filter buttons ]
    [ menu icon ]
    [ list of items ]
    [ search box ] (a) list of items (b) menu icon (c) filter buttons
28. 28.True or false: a wireframe has the real colours. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) how many taps it takes (b) how users feel after (c) the font size (d) whether users get lost
30. 30.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Match report”
    Which screen are you on now? (a) Feed (b) Match report (c) Edit photo (d) Chat
31. 31.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Pens
    Design B: Home → Cart → Pay → Menu → Confirm → Results → Search
33. 33.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) add it to the cart (c) open the menu (d) track the order
34. 34.True or false: a draft you are typing fits saving in the cloud. (a) True (b) False
35. 35.True or false: the sound on/off setting fits saving on the phone. (a) True (b) False
36. 36.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ title text ]
    [ menu icon ]
    [ big picture ]
    [ filter buttons ] (a) big picture (b) filter buttons (c) title text (d) menu icon
37. 37.🧭 Which part of navigation sits at the bottom? (a) a menu button (b) the back button (c) a tab bar
38. 38.🧭 Which part of navigation undoes one move? (a) a menu button (b) the back button (c) a tab bar
39. 39.True or false: a clear word like Save is good button design. (a) True (b) False
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 52 px tall
    Start button: 68 px tall
    Next button: 44 px tall (a) Cancel (b) Start (c) Next

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