App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 558 · 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) big touch targets (b) labels on every icon (c) captions on videos (d) fast-flashing lights
2. 2.💾 What number does this code show?
   let notes = ["Science", "Sports"];
   notes.push("Art");
   notes.push("Hindi");
   show(notes.length);
3. 3.Which of these fits saving in the cloud? (a) notes to read offline (b) the sound on/off setting (c) your last game level (d) a shared to-do list
4. 4.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Map”
   2. open “Help page”
   3. open “Friend list”
   4. open “Edit photo”
   Which screen are you on now? (a) Edit photo (b) Map (c) Friend list (d) Help page
5. 5.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) open the app (c) type name and email (d) see the home screen
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Results → Offers → Address
   Design B: Home → Search → Address → Offers → Pens
7. 7.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Score card”
   2. tap Back
   3. open “Score card”
   4. tap the Quiz tab
   5. tap the Me tab
   Which screen are you on now? (a) Me (b) Score card (c) Lessons (d) Quiz
8. 8.True or false: chat messages to friends fits saving on the phone. (a) False (b) True
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Address → Shop
   Design B: Home → Menu → Confirm → Item
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 17 px
    Body text: 9 px
    Label: 25 px (a) Footer (b) Label (c) Body text
11. 11.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
12. 12.🔢 In a quiz-app flow, which comes first: “pick an answer” or “see the final score”? (a) see the final score (b) pick an answer
13. 13.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
14. 14.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a bright colour (d) a text label
15. 15.Which of these is about UI (the look)? (a) how users feel after (b) the icon shapes (c) how easy sign-up is (d) whether users get lost
16. 16.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 44 px tall
    Save button: 56 px tall
    Done button: 60 px tall
17. 17.✏️ What is a wireframe? (a) a type of password (b) the finished app (c) a charging cable (d) a simple screen sketch
18. 18.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Hindi", "Music", "Science"];
    show(notes[2]); (a) Hindi (b) Maths (c) Science (d) Music
19. 19.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) the path through screens (d) a type of font
20. 20.Which of these is about UX (the experience)? (a) the screen layout (b) the font size (c) how users feel after (d) the button colours
21. 21.💾 What number does this code show?
    let coins = 4;
    coins = coins - 1;
    coins = coins + 2;
    show(coins);
22. 22.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
23. 23.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
24. 24.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
25. 25.🔢 In a food-order flow, which comes first: “pay for the order” or “add it to the cart”? (a) add it to the cart (b) pay for the order
26. 26.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
27. 27.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. open “Score card”
    3. tap Back
    4. open “Video”
    Which screen are you on now? (a) Score card (b) Video (c) Lessons (d) Quiz
28. 28.True or false: a clear word like Save is poor button design. (a) False (b) True
29. 29.🔢 In a photo-post flow, which comes LAST? (a) take the photo (b) post the photo (c) add a filter (d) open the camera screen
30. 30.True or false: how easy sign-up is is about UX (the experience). (a) False (b) True
31. 31.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
32. 32.True or false: your last game level fits saving in the cloud. (a) True (b) False
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 12 px
    Menu: 23 px
    Label: 20 px
    Body text: 20 px
    Caption: 20 px (a) Label (b) Body text (c) Footer (d) Menu
34. 34.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) the button colours (d) whether users get lost
35. 35.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Profile tab
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
36. 36.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) open the app (b) tap “Sign up” (c) see the home screen (d) make a password
37. 37.🔢 In a food-order flow, which comes FIRST? (a) track the order (b) open the menu (c) pay for the order (d) pick a dish
38. 38.💾 pop() takes off the last item. What does this code show?
    let songs = ["Kites", "Stars", "Rain", "Monsoon"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Monsoon (b) Rain (c) Kites (d) Stars
39. 39.Which of these is true of a tab bar? (a) hides extra links (b) shows 3 to 5 icons (c) goes to the last screen (d) opens a list of pages
40. 40.🎨 Who should you test the UX with? (a) nobody (b) the app icon (c) real users (d) only yourself

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