App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 925 · 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.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Friend list”
   2. tap the Me tab
   3. open “Match report”
   4. tap the Quiz tab
   5. open “Help page”
   How many times must you tap Back to reach the main screen of this tab?
2. 2.Which of these is true of the back button? (a) switches main sections (b) hides extra links (c) undoes one move (d) shows 3 to 5 icons
3. 3.♿ A screen has 12 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
4. 4.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
5. 5.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
6. 6.💾 pop() takes off the last item. What does this code show?
   let friends = ["Zoya", "Kabir", "Arjun"];
   friends.pop();
   show(friends[friends.length - 1]); (a) Zoya (b) Kabir (c) Arjun
7. 7.Which of these fits saving on the phone? (a) a class leaderboard (b) chat messages to friends (c) the sound on/off setting (d) photos on two devices
8. 8.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
9. 9.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
10. 10.🖼️ How many parts (boxes) does this wireframe have?
    [ title text ]
    [ search box ]
    [ menu icon ]
    [ list of items ]
11. 11.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 1 (c) 10 to 12 (d) 3 to 5
12. 12.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap the Lessons tab
    3. tap the Me tab
    Which screen are you on now? (a) Lessons (b) Quiz (c) Edit photo (d) Me
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Results → Pens → Menu
    Design B: Home → Address → Offers
14. 14.🔘 Our rule: buttons are at least 48 px tall. The Save button is 32 px tall. How many px taller must it be?
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Help page”
    3. tap Back
    Which screen are you on now? (a) Score card (b) Search (c) Help page (d) Home
16. 16.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) a type of font (d) the path through screens
17. 17.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) plays music (d) takes photos
18. 18.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. open “Video”
    3. open “Match report”
    4. tap Back
    5. tap Back
    Which screen are you on now? (a) Match report (b) Video (c) Home (d) Edit photo
20. 20.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
21. 21.🎨 Who should you test the UX with? (a) the app icon (b) nobody (c) real users (d) only yourself
22. 22.🔢 In a food-order flow, what comes right after “pay for the order”? (a) pick a dish (b) track the order (c) add it to the cart (d) check the cart
23. 23.💾 pop() takes off the last item. What does this code show?
    let songs = ["Sunrise", "Ocean", "Monsoon", "Rain"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Monsoon (b) Sunrise (c) Rain (d) Ocean
24. 24.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 64 px tall
    Start button: 52 px tall
    Done button: 40 px tall (a) Start (b) Help (c) Done
25. 25.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Confirm → Offers → Size → Pens
    Design B: Home → Shop → Size → Confirm
26. 26.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 52 px tall
    Done button: 36 px tall
    Help button: 60 px tall
    Back button: 40 px tall
27. 27.🧭 What does the back button usually do? (a) closes all apps (b) opens settings (c) goes to the last screen (d) deletes the page
28. 28.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Confirm → Pens
    Design B: Home → Results → Address → Menu → Pens → Item
29. 29.✏️ Why draw a wireframe before coding? (a) it saves data (b) it runs the app (c) it adds colours (d) changes are quick
30. 30.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap Back
    3. tap the Profile tab
    4. open “Badges”
    Which screen are you on now? (a) Friend list (b) Search (c) Badges (d) Home
32. 32.Which of these helps everyone use the app? (a) tiny tap areas (b) colour as the only clue (c) fast-flashing lights (d) big touch targets
33. 33.🔍 Which is the odd one out? (a) how many taps it takes (b) how easy sign-up is (c) how users feel after (d) the font size
34. 34.Which of these is true of a final design? (a) shows where things go (b) looks like the real app (c) is a quick sketch (d) has no real colours
35. 35.🔢 In a food-order flow, which comes first: “check the cart” or “track the order”? (a) track the order (b) check the cart
36. 36.🔍 Which is the odd one out? (a) how many taps it takes (b) how fast a task is done (c) how easy sign-up is (d) the theme colours
37. 37.✏️ What is a wireframe? (a) a simple screen sketch (b) a charging cable (c) a type of password (d) the finished app
38. 38.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
39. 39.💾 What is a variable? (a) a type of screen (b) a picture (c) a phone setting (d) a named box for a value
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 64 px tall
    Cancel button: 60 px tall
    Done button: 28 px tall
    Send button: 68 px tall (a) Done (b) Cancel (c) Send (d) Help

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