App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 951 · 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.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “open the app”? (a) tap “Sign up” (b) open the app
2. 2.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 10 px
   Body text: 14 px
   Menu: 14 px
   Hint: 16 px
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 → Results → Menu → Confirm → Cart → Pay
   Design B: Home → Shop → Cart → Pay → Menu
4. 4.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. tap the Lessons tab
   3. open “Badges”
   4. tap the Me tab
   5. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
7. 7.✏️ What is the easiest way to draw a first wireframe? (a) a microphone (b) a 3D printer (c) a phone case (d) pencil and paper
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 23 px
   Hint: 21 px
   Caption: 10 px
   Title: 18 px
   Body text: 19 px (a) Caption (b) Label (c) Title (d) Hint
9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Help button: 48 px tall
   Done button: 44 px tall
   Cancel button: 40 px tall
10. 10.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
11. 11.🔘 Our rule: buttons are at least 48 px tall. The Help button is 32 px tall. How many px taller must it be?
12. 12.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) to hide the buttons (d) so each step is clear
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 18 px
    Body text: 28 px
    Label: 27 px
    Menu: 9 px
    Title: 28 px (a) Label (b) Menu (c) Body text (d) Caption
14. 14.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. open “Score card”
    3. tap Back
    Which screen are you on now? (a) Video (b) Search (c) Home (d) Score card
15. 15.Which colour pair is easy to read? (a) pale pink on white (b) light grey on white (c) black on yellow (d) dark blue on black
16. 16.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a final design (b) a wireframe
17. 17.🖼️ In this wireframe (top to bottom), what is right above the title text?
    [ list of items ]
    [ tab bar ]
    [ big picture ]
    [ title text ] (a) tab bar (b) big picture (c) list of items
18. 18.Which of these fits saving in the cloud? (a) chat messages to friends (b) the sound on/off setting (c) a draft you are typing (d) notes to read offline
19. 19.True or false: a final design shows the real fonts. (a) False (b) True
20. 20.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a clear next step (c) a dead end (d) a random page
21. 21.True or false: space between buttons is good button design. (a) True (b) False
22. 22.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) read a question (b) see if it is right (c) see the final score (d) tap “Start quiz”
23. 23.True or false: the theme colours is about UI (the look). (a) True (b) False
24. 24.🧭 Which part of navigation opens a list of pages? (a) a tab bar (b) a menu button (c) the back button
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 12 px
    Title: 21 px
    Hint: 12 px
26. 26.🔢 In a food-order flow, which comes FIRST? (a) add it to the cart (b) pick a dish (c) open the menu (d) pay for the order
27. 27.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
28. 28.Which of these is true of a menu button? (a) undoes one move (b) sits at the bottom (c) goes to the last screen (d) opens a list of pages
29. 29.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
30. 30.💾 Which can hold many values in order? (a) a button (b) a switch (c) a list (d) a single number
31. 31.💾 What number does this code show?
    let notes = ["Sports", "Art"];
    notes.push("Music");
    show(notes.length);
32. 32.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Quiz tab
    2. open “Edit photo”
    3. tap the Quiz tab
    4. open “Friend list”
    5. tap the Lessons tab
    Which screen are you on now? (a) Lessons (b) Quiz (c) Friend list (d) Edit photo
33. 33.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Friend list”
    2. tap the Quiz tab
    3. open “Friend list”
    4. tap the Quiz tab
    How many times must you tap Back to reach the main screen of this tab?
34. 34.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a sound (c) a text label (d) a bright colour
35. 35.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. tap Back
    3. open “Score card”
    Which screen are you on now? (a) Settings (b) Score card (c) Chat (d) Feed
36. 36.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 48 px tall
    Save button: 60 px tall
    Send button: 36 px tall
    Back button: 56 px tall
37. 37.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Address
    Design B: Home → Size → Shop → Pens
38. 38.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Results → Size
    Design B: Home → Confirm → Pay → Address → Item (a) Design B (b) Design A
39. 39.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) a type of font (d) the path through screens
40. 40.🔢 In a photo-post flow, what comes right after “write a caption”? (a) add a filter (b) take the photo (c) post the photo (d) open the camera screen

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