App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 314 · 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 sign-up flow, what comes right after “enter the code sent”? (a) tap “Sign up” (b) open the app (c) type name and email (d) see the home screen
2. 2.💾 What number does this code show?
   let friends = ["Aman", "Riya"];
   friends.push("Arjun");
   friends.push("Zoya");
   show(friends.length);
3. 3.🧭 Which part of navigation opens a list of pages? (a) a tab bar (b) a menu button (c) the back button
4. 4.🧭 Which part of navigation undoes one move? (a) a menu button (b) a tab bar (c) the back button
5. 5.True or false: the button colours is about UX (the experience). (a) True (b) False
6. 6.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Map”
   2. tap Back
   3. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
7. 7.💾 What number does this code show?
   let coins = 3;
   coins = coins - 1;
   coins = coins + 1;
   show(coins);
8. 8.🎨 Is this about UI or UX: the theme colours? (a) UI (b) UX
9. 9.True or false: how users feel after is about UI (the look). (a) False (b) True
10. 10.🔘 Our rule: buttons are at least 48 px tall. The Next button is 24 px tall. How many px taller must it be?
11. 11.💾 What number does this code show?
    let points = 3;
    points = points - 3;
    points = points + 1;
    show(points);
12. 12.🔘 Our rule: buttons are at least 48 px tall. The Done button is 20 px tall. How many px taller must it be?
13. 13.💾 What number does this code show?
    let stars = 4;
    stars = stars - 1;
    stars = stars + 1;
    show(stars);
14. 14.🧭 Which part of navigation goes to the last screen? (a) a menu button (b) the back button (c) a tab bar
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Shop → Item → Size → Results
    Design B: Home → Menu → Offers
16. 16.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 52 px tall
    Cancel button: 28 px tall
    Back button: 48 px tall
    Save button: 60 px tall (a) Done (b) Save (c) Cancel (d) Back
17. 17.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap the Quiz tab
    3. tap the Me tab
    4. open “Edit photo”
    5. tap the Lessons tab
    Which screen are you on now? (a) Quiz (b) Lessons (c) Edit photo (d) Score card
18. 18.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Item
    Design B: Home → Size → Menu → Offers → Search → Pens (a) Design A (b) Design B
19. 19.💾 What number does this code show?
    let lives = 8;
    lives = lives - 3;
    lives = lives + 1;
    show(lives);
20. 20.💾 What number does this code show?
    let songs = ["Monsoon", "Rain", "Kites"];
    songs.push("Sunrise");
    show(songs.length);
21. 21.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
22. 22.💾 What number does this code show?
    let friends = ["Zoya", "Riya"];
    friends.push("Arjun");
    show(friends.length);
23. 23.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ filter buttons ]
    [ list of items ]
    [ big picture ]
    [ search box ]
    [ menu icon ] (a) filter buttons (b) menu icon (c) search box (d) big picture
24. 24.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Profile tab
    3. open “Map”
    Which screen are you on now? (a) Search (b) Profile (c) Map (d) Home
25. 25.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
26. 26.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
27. 27.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) tap “Sign up” (c) enter the code sent (d) open the app
28. 28.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap the Me tab
    3. open “Edit photo”
    4. tap the Quiz tab
    5. tap the Quiz tab
    How many times must you tap Back to reach the main screen of this tab?
29. 29.Which colour pair is hard to read? (a) pale pink on white (b) white on black (c) white on dark green (d) black on yellow
30. 30.🎨 UX stands for user ___. (a) express (b) experience (c) extra (d) example
31. 31.True or false: how many taps it takes is about UI (the look). (a) False (b) True
32. 32.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
33. 33.True or false: a final design uses plain grey boxes. (a) True (b) False
34. 34.Which of these fits saving on the phone? (a) photos on two devices (b) a class leaderboard (c) the sound on/off setting (d) chat messages to friends
35. 35.True or false: a wireframe shows where things go. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) how users feel after (b) the font size (c) how fast a task is done (d) how easy sign-up is
37. 37.💾 What number does this code show?
    let lives = 4;
    lives = lives - 4;
    lives = lives + 2;
    show(lives);
38. 38.🔢 In a food-order flow, which comes FIRST? (a) add it to the cart (b) pay for the order (c) open the menu (d) pick a dish
39. 39.💾 What number does this code show?
    let score = 8;
    score = score - 1;
    score = score + 3;
    show(score);
40. 40.🔀 Why plan the user flow before building? (a) to add more taps (b) so each step is clear (c) to hide the buttons (d) to skip testing

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