App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 988 · 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.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Search → Offers → Size → Results → Menu
   Design B: Home → Cart → Results → Item → Pay → Pens → Address
2. 2.🔍 Which is the odd one out? (a) captions on videos (b) strong colour contrast (c) big touch targets (d) fast-flashing lights
3. 3.✏️ What is a wireframe? (a) a charging cable (b) a simple screen sketch (c) a type of password (d) the finished app
4. 4.Which of these fits saving in the cloud? (a) the sound on/off setting (b) your last game level (c) photos on two devices (d) a draft you are typing
5. 5.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) fast-flashing lights (d) captions on videos
6. 6.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Item → Address
   Design B: Home → Results → Menu → Search → Address (a) Design B (b) Design A
7. 7.Which of these helps everyone use the app? (a) fast-flashing lights (b) sudden loud sounds (c) text that can grow (d) tiny tap areas
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Edit photo”
   2. open “Video”
   3. tap the Home tab
   How many times must you tap Back to reach the main screen of this tab?
9. 9.True or false: a final design shows the real fonts. (a) False (b) True
10. 10.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
11. 11.Which of these is true of a final design? (a) is a quick sketch (b) has no real colours (c) has the real colours (d) shows where things go
12. 12.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) white on black (d) light grey on white
13. 13.True or false: a wireframe has the real colours. (a) True (b) False
14. 14.🖼️ How many parts (boxes) does this wireframe have?
    [ menu icon ]
    [ filter buttons ]
    [ top bar ]
    [ Save button ]
    [ title text ]
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 24 px
    Hint: 26 px
    Caption: 10 px (a) Caption (b) Title (c) Hint
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Shop → Offers → Confirm → Pay
    Design B: Home → Cart → Size → Address
17. 17.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) in the cloud (b) on the phone
18. 18.True or false: grey text on grey is poor button design. (a) False (b) True
19. 19.💾 What number does this code show?
    let songs = ["Sunrise", "Ocean", "Kites"];
    songs.push("Rain");
    show(songs.length);
20. 20.Which of these fits saving on the phone? (a) a shared to-do list (b) photos on two devices (c) a class leaderboard (d) a draft you are typing
21. 21.🔢 In a sign-up flow, what comes right after “open the app”? (a) tap “Sign up” (b) type name and email (c) make a password (d) enter the code sent
22. 22.🔢 In a sign-up flow, which comes FIRST? (a) see the home screen (b) type name and email (c) make a password (d) open the app
23. 23.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. open “Match report”
    3. tap Back
    4. tap the Lessons tab
    Which screen are you on now? (a) Badges (b) Match report (c) Quiz (d) Lessons
24. 24.🔘 Our rule: buttons are at least 48 px tall. The Save button is 28 px tall. How many px taller must it be?
25. 25.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
26. 26.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
27. 27.🔢 In a food-order flow, which comes first: “add it to the cart” or “pick a dish”? (a) add it to the cart (b) pick a dish
28. 28.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 24 px tall
    Next button: 56 px tall
    Save button: 48 px tall (a) Save (b) Done (c) Next
29. 29.🔘 Our rule: buttons are at least 48 px tall. The Next button is 36 px tall. How many px taller must it be?
30. 30.🔘 Our rule: buttons are at least 48 px tall. The Next button is 24 px tall. How many px taller must it be?
31. 31.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
32. 32.🎨 UX stands for user ___. (a) example (b) express (c) experience (d) extra
33. 33.Which of these is about UX (the experience)? (a) the icon shapes (b) the button colours (c) the screen layout (d) whether users get lost
34. 34.True or false: the font size is about UX (the experience). (a) True (b) False
35. 35.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
36. 36.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) nobody (d) everyone
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Done button is 24 px tall. How many px taller must it be?
38. 38.Which of these fits saving on the phone? (a) a shared to-do list (b) chat messages to friends (c) your last game level (d) a class leaderboard
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 23 px
    Menu: 24 px
    Hint: 15 px
40. 40.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud

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