App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 639 · 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.Which of these is about UI (the look)? (a) how easy sign-up is (b) whether users get lost (c) how fast a task is done (d) the button colours
2. 2.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. open “Edit photo”
   3. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
3. 3.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Address → Offers → Menu
   Design B: Home → Results → Search → Offers → Size → Pay → Address
4. 4.🔢 In a sign-up flow, which comes FIRST? (a) tap “Sign up” (b) open the app (c) see the home screen (d) type name and email
5. 5.Which of these is about UI (the look)? (a) how many taps it takes (b) how fast a task is done (c) the screen layout (d) whether users get lost
6. 6.True or false: a final design is a quick sketch. (a) True (b) False
7. 7.Which of these makes the app harder to use? (a) labels on every icon (b) text that can grow (c) sudden loud sounds (d) big touch targets
8. 8.Which of these fits saving in the cloud? (a) the sound on/off setting (b) your last game level (c) a draft you are typing (d) a shared to-do list
9. 9.🔢 In a sign-up flow, what comes right after “open the app”? (a) enter the code sent (b) see the home screen (c) tap “Sign up” (d) type name and email
10. 10.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
11. 11.🔢 In a photo-post flow, what comes right after “add a filter”? (a) write a caption (b) take the photo (c) open the camera screen (d) post the photo
12. 12.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. open “Badges”
    3. tap the Search tab
    4. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
13. 13.🔢 In a sign-up flow, which comes first: “enter the code sent” or “make a password”? (a) enter the code sent (b) make a password
14. 14.💾 What number does this code show?
    let friends = ["Meera", "Riya", "Zoya"];
    friends.push("Arjun");
    friends.push("Aman");
    show(friends.length);
15. 15.True or false: the sound on/off setting fits saving on the phone. (a) True (b) False
16. 16.Which of these is about UI (the look)? (a) the font size (b) how users feel after (c) how fast a task is done (d) how easy sign-up is
17. 17.🔍 Which is the odd one out? (a) the font size (b) how fast a task is done (c) the screen layout (d) the theme colours
18. 18.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ search box ]
    [ tab bar ]
    [ Add button ]
    [ filter buttons ]
    [ list of items ]
    [ top bar ] (a) tab bar (b) top bar (c) filter buttons (d) Add button
19. 19.🔀 What is a user flow? (a) a colour theme (b) the path through screens (c) a charging cable (d) a type of font
20. 20.💾 What number does this code show?
    let points = 3;
    points = points - 3;
    points = points + 4;
    show(points);
21. 21.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 44 px tall
    Send button: 64 px tall
    Start button: 32 px tall
    Help button: 64 px tall
22. 22.Which of these is true of a tab bar? (a) hides extra links (b) sits at the bottom (c) opens a list of pages (d) undoes one move
23. 23.Which of these is about UI (the look)? (a) how easy sign-up is (b) whether users get lost (c) the icon shapes (d) how users feel after
24. 24.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Pens → Offers
    Design B: Home → Offers → Shop (a) Design B (b) Design A
25. 25.True or false: how easy sign-up is is about UX (the experience). (a) True (b) False
26. 26.True or false: a class leaderboard fits saving on the phone. (a) False (b) True
27. 27.True or false: the font size is about UX (the experience). (a) True (b) False
28. 28.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap Back
    3. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?
29. 29.🧭 Which part of navigation switches main sections? (a) a tab bar (b) a menu button (c) the back button
30. 30.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
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Menu → Pens → Results → Cart
    Design B: Home → Confirm → Results → Pens → Address
32. 32.True or false: strong colour contrast is poor button design. (a) False (b) True
33. 33.🔢 In a food-order flow, what comes right after “open the menu”? (a) check the cart (b) track the order (c) pick a dish (d) add it to the cart
34. 34.💾 pop() takes off the last item. What does this code show?
    let friends = ["Aman", "Riya", "Arjun", "Meera", "Kabir"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Meera (b) Arjun (c) Riya (d) Aman
35. 35.🧭 Which part of navigation sits at the bottom? (a) a tab bar (b) the back button (c) a menu button
36. 36.💾 What number does this code show?
    let notes = ["Maths", "Art", "Hindi", "Sports"];
    notes.push("Science");
    show(notes.length);
37. 37.💾 Which can hold many values in order? (a) a single number (b) a button (c) a switch (d) a list
38. 38.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
39. 39.💾 Where should the app save your last game level: on the phone or in the cloud? (a) in the cloud (b) on the phone
40. 40.✏️ Why draw a wireframe before coding? (a) it saves data (b) changes are quick (c) it runs the app (d) it adds colours

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