App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 13 · 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 food-order flow, what comes right after “add it to the cart”? (a) check the cart (b) track the order (c) pick a dish (d) open the menu
2. 2.True or false: a wireframe uses plain grey boxes. (a) False (b) True
3. 3.Which of these is true of a menu button? (a) opens a list of pages (b) switches main sections (c) shows 3 to 5 icons (d) undoes one move
4. 4.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a final design (b) a wireframe
5. 5.Which of these fits saving in the cloud? (a) a draft you are typing (b) the sound on/off setting (c) notes to read offline (d) a shared to-do list
6. 6.Which of these is about UI (the look)? (a) whether users get lost (b) how easy sign-up is (c) the icon shapes (d) how fast a task is done
7. 7.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) a closed app (c) an error (d) a picture goes here
8. 8.True or false: a final design shows the real fonts. (a) True (b) False
9. 9.Which of these fits saving in the cloud? (a) the sound on/off setting (b) your last game level (c) a class leaderboard (d) a draft you are typing
10. 10.Which of these fits saving on the phone? (a) photos on two devices (b) notes to read offline (c) a class leaderboard (d) a shared to-do list
11. 11.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Music", "Art", "Hindi"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Art (c) Maths (d) Hindi
12. 12.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
13. 13.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Confirm → Offers → Results → Size → Pay
    Design B: Home → Address → Shop → Item → Cart (a) Design B (b) Design A
14. 14.🔍 Which is the odd one out? (a) the icon shapes (b) the theme colours (c) the screen layout (d) how many taps it takes
15. 15.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Size → Results → Menu → Address
    Design B: Home → Menu → Offers → Size → Shop → Cart
17. 17.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
18. 18.💾 What number does this code show?
    let friends = ["Riya", "Aman"];
    friends.push("Zoya");
    show(friends.length);
19. 19.True or false: a final design shows where things go. (a) False (b) True
20. 20.🔢 In a quiz-app flow, which comes first: “pick an answer” or “read a question”? (a) read a question (b) pick an answer
21. 21.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
22. 22.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a sound (c) a long animation (d) a text label
23. 23.True or false: space between buttons is poor button design. (a) False (b) True
24. 24.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
25. 25.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
26. 26.Which of these makes the app harder to use? (a) colour as the only clue (b) labels on every icon (c) captions on videos (d) text that can grow
27. 27.🧭 Tapping a tab usually takes you to ___. (a) that tab’s main screen (b) the phone settings (c) a random page (d) the last app used
28. 28.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
29. 29.🖼️ In this wireframe (top to bottom), what is right below the menu icon?
    [ menu icon ]
    [ tab bar ]
    [ title text ]
    [ Save button ]
    [ filter buttons ]
    [ search box ] (a) filter buttons (b) Save button (c) tab bar (d) search box
30. 30.💾 Data saved only on the phone is lost when ___. (a) the app is closed (b) the phone is lost (c) the screen turns off (d) you send a message
31. 31.True or false: space between buttons is good button design. (a) False (b) True
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Address → Confirm
    Design B: Home → Offers → Address (a) Design A (b) Design B
33. 33.💾 What is a variable? (a) a named box for a value (b) a type of screen (c) a picture (d) a phone setting
34. 34.Which of these helps everyone use the app? (a) text that can grow (b) icons with no labels (c) fast-flashing lights (d) colour as the only clue
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Search → Results → Confirm
    Design B: Home → Size → Pens → Search → Confirm → Pay → Shop
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Pens → Item → Size → Menu
    Design B: Home → Address → Pens → Confirm → Size → Shop → Menu
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Start button is 24 px tall. How many px taller must it be?
38. 38.🔀 What is a user flow? (a) a colour theme (b) a type of font (c) a charging cable (d) the path through screens
39. 39.🔍 Which is the odd one out? (a) the font size (b) how users feel after (c) the button colours (d) the theme colours
40. 40.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Home tab
    3. open “Match report”
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?

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