App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 597 · 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.🔘 Our rule: buttons are at least 48 px tall. The Help button is 20 px tall. How many px taller must it be?
2. 2.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
3. 3.🖼️ In this wireframe (top to bottom), what is right above the big picture?
   [ menu icon ]
   [ title text ]
   [ top bar ]
   [ big picture ]
   [ filter buttons ]
   [ tab bar ] (a) title text (b) top bar (c) menu icon (d) tab bar
4. 4.Which of these fits saving on the phone? (a) a shared to-do list (b) the sound on/off setting (c) a class leaderboard (d) photos on two devices
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. open “Edit photo”
   3. open “Badges”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🧭 Why should every screen show where you are? (a) to use more battery (b) to hide the menu (c) so users do not get lost (d) to look busy
7. 7.🔍 Which is the odd one out? (a) how many taps it takes (b) the button colours (c) how users feel after (d) how fast a task is done
8. 8.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
9. 9.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
10. 10.💾 Which works with no internet at all? (a) data saved on the phone (b) a cloud leaderboard (c) a cloud backup (d) a shared chat
11. 11.🖼️ How many parts (boxes) does this wireframe have?
    [ top bar ]
    [ menu icon ]
    [ title text ]
    [ Save button ]
    [ tab bar ]
12. 12.🔢 In a sign-up flow, which comes first: “enter the code sent” or “see the home screen”? (a) see the home screen (b) enter the code sent
13. 13.🎨 Is this about UI or UX: how users feel after? (a) UX (b) UI
14. 14.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. open “Edit photo”
    3. open “Edit photo”
    4. tap the Search tab
    5. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
16. 16.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) write a caption (c) take the photo (d) post the photo
17. 17.True or false: how users feel after is about UI (the look). (a) False (b) True
18. 18.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
19. 19.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Match report”
    2. tap Back
    3. open “Score card”
    4. open “Edit photo”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
20. 20.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
21. 21.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
22. 22.🔍 Which is the odd one out? (a) how fast a task is done (b) how easy sign-up is (c) whether users get lost (d) the font size
23. 23.🔢 In a food-order flow, what comes right after “pay for the order”? (a) pick a dish (b) open the menu (c) check the cart (d) track the order
24. 24.🔢 In a food-order flow, which comes LAST? (a) open the menu (b) track the order (c) add it to the cart (d) pick a dish
25. 25.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
26. 26.🖼️ In this wireframe (top to bottom), what is right below the list of items?
    [ title text ]
    [ Save button ]
    [ list of items ]
    [ filter buttons ] (a) Save button (b) title text (c) filter buttons
27. 27.True or false: a class leaderboard fits saving in the cloud. (a) False (b) True
28. 28.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 14 px
    Hint: 14 px
    Title: 14 px
29. 29.🔍 Which is the odd one out? (a) text that can grow (b) colour as the only clue (c) sudden loud sounds (d) tiny tap areas
30. 30.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Results → Menu → Pens → Size
    Design B: Home → Search → Address → Cart → Pay (a) Design B (b) Design A
31. 31.True or false: how many taps it takes is about UX (the experience). (a) True (b) False
32. 32.Which of these fits saving on the phone? (a) photos on two devices (b) notes to read offline (c) chat messages to friends (d) a class leaderboard
33. 33.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Pens → Offers → Address → Search → Pay → Item
    Design B: Home → Offers → Results → Cart → Item
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 24 px
    Caption: 19 px
    Label: 13 px (a) Title (b) Caption (c) Label
35. 35.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 72 px tall
    Start button: 28 px tall
    Save button: 56 px tall
    Help button: 64 px tall (a) Start (b) Help (c) Save (d) Next
36. 36.💾 What number does this code show?
    let coins = 5;
    coins = coins - 4;
    coins = coins + 1;
    show(coins);
37. 37.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
38. 38.💾 What number does this code show?
    let friends = ["Riya", "Kabir", "Zoya", "Arjun"];
    friends.push("Meera");
    friends.push("Aman");
    show(friends.length);
39. 39.🧭 Which part of navigation goes to the last screen? (a) a tab bar (b) the back button (c) a menu button
40. 40.🔢 In a photo-post flow, which comes first: “post the photo” or “open the camera screen”? (a) post the photo (b) open the camera screen

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