App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 179 · 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 photo-post flow, which comes first: “open the camera screen” or “add a filter”? (a) open the camera screen (b) add a filter
2. 2.🖼️ In this wireframe (top to bottom), what is right below the title text?
   [ big picture ]
   [ Add button ]
   [ title text ]
   [ menu icon ]
   [ search box ] (a) Add button (b) search box (c) menu icon (d) big picture
3. 3.Which of these is true of a tab bar? (a) sits at the bottom (b) opens a list of pages (c) goes to the last screen (d) undoes one move
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Label: 14 px
   Footer: 18 px
   Menu: 13 px
5. 5.🧭 Why should every screen show where you are? (a) to hide the menu (b) so users do not get lost (c) to look busy (d) to use more battery
6. 6.🖼️ In this wireframe (top to bottom), what is right below the filter buttons?
   [ filter buttons ]
   [ list of items ]
   [ Add button ]
   [ big picture ]
   [ search box ] (a) big picture (b) Add button (c) search box (d) list of items
7. 7.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
8. 8.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
   [ title text ]
   [ tab bar ]
   [ big picture ]
   [ menu icon ] (a) menu icon (b) big picture (c) title text
9. 9.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
10. 10.🔢 In a quiz-app flow, which comes LAST? (a) tap “Start quiz” (b) see if it is right (c) see the final score (d) read a question
11. 11.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Results → Size → Offers → Shop → Search
    Design B: Home → Size → Shop → Cart → Confirm → Search → Menu
12. 12.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Menu → Confirm → Search → Pay
    Design B: Home → Offers → Shop → Item → Size → Pens → Results
13. 13.True or false: how many taps it takes is about UI (the look). (a) True (b) False
14. 14.Which of these fits saving in the cloud? (a) a draft you are typing (b) notes to read offline (c) chat messages to friends (d) your last game level
15. 15.🖼️ How many parts (boxes) does this wireframe have?
    [ tab bar ]
    [ list of items ]
    [ search box ]
    [ title text ]
16. 16.True or false: a wireframe has the real colours. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) big touch targets (d) icons with no labels
18. 18.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
19. 19.Which of these is true of a wireframe? (a) uses the final pictures (b) looks like the real app (c) shows the real fonts (d) has no real colours
20. 20.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
21. 21.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 18 px
    Footer: 16 px
    Title: 13 px
    Body text: 24 px
    Caption: 27 px (a) Footer (b) Body text (c) Menu (d) Title
23. 23.🔢 In a food-order flow, which comes first: “pay for the order” or “check the cart”? (a) pay for the order (b) check the cart
24. 24.True or false: chat messages to friends fits saving in the cloud. (a) True (b) False
25. 25.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 40 px tall
    Save button: 52 px tall
    Done button: 36 px tall
26. 26.💾 What number does this code show?
    let songs = ["Sunrise", "Rain", "Kites"];
    songs.push("Stars");
    songs.push("Monsoon");
    show(songs.length);
27. 27.🔢 In a food-order flow, which comes first: “add it to the cart” or “pay for the order”? (a) add it to the cart (b) pay for the order
28. 28.🔢 In a photo-post flow, which comes LAST? (a) take the photo (b) write a caption (c) open the camera screen (d) post the photo
29. 29.🔢 In a sign-up flow, which comes FIRST? (a) see the home screen (b) open the app (c) make a password (d) tap “Sign up”
30. 30.🔍 Which is the odd one out? (a) how users feel after (b) how many taps it takes (c) how easy sign-up is (d) the theme colours
31. 31.🎨 UX stands for user ___. (a) extra (b) express (c) example (d) experience
32. 32.True or false: the font size is about UI (the look). (a) True (b) False
33. 33.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
34. 34.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. open “Edit photo”
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
35. 35.💾 Data saved only on the phone is lost when ___. (a) the phone is lost (b) the app is closed (c) the screen turns off (d) you send a message
36. 36.💾 pop() takes off the last item. What does this code show?
    let friends = ["Riya", "Arjun", "Meera", "Aman"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Meera (b) Aman (c) Riya (d) Arjun
37. 37.♿ A screen has 11 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
38. 38.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. open “Badges”
    3. tap the Home tab
    4. open “Badges”
    How many times must you tap Back to reach the main screen of this tab?
39. 39.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
40. 40.True or false: a draft you are typing fits saving in the cloud. (a) False (b) True

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