App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 916 · 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 true of a menu button? (a) opens a list of pages (b) shows 3 to 5 icons (c) switches main sections (d) sits at the bottom
2. 2.💾 pop() takes off the last item. What does this code show?
   let notes = ["Maths", "Music", "Science"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Music (b) Science (c) Maths
3. 3.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
4. 4.🎨 Who should you test the UX with? (a) the app icon (b) only yourself (c) nobody (d) real users
5. 5.💾 Which can hold many values in order? (a) a button (b) a single number (c) a list (d) a switch
6. 6.True or false: the icon shapes is about UI (the look). (a) False (b) True
7. 7.🔢 In a food-order flow, which comes first: “pick a dish” or “open the menu”? (a) pick a dish (b) open the menu
8. 8.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Map”
   2. open “Help page”
   3. tap the Chat tab
   Which screen are you on now? (a) Map (b) Help page (c) Feed (d) Chat
9. 9.💾 What number does this code show?
   let friends = ["Arjun", "Meera", "Kabir", "Riya"];
   friends.push("Aman");
   friends.push("Zoya");
   show(friends.length);
10. 10.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 72 px tall
    Back button: 68 px tall
    Start button: 40 px tall (a) Start (b) Back (c) Save
11. 11.🔢 In a photo-post flow, which comes first: “write a caption” or “post the photo”? (a) post the photo (b) write a caption
12. 12.🔀 What is a user flow? (a) the path through screens (b) a charging cable (c) a colour theme (d) a type of font
13. 13.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. tap the Chat tab
    3. open “Badges”
    How many times must you tap Back to reach the main screen of this tab?
14. 14.💾 What number does this code show?
    let coins = 4;
    coins = coins - 2;
    coins = coins + 5;
    show(coins);
15. 15.🧭 Which part of navigation goes to the last screen? (a) a menu button (b) a tab bar (c) the back button
16. 16.🔢 In a quiz-app flow, which comes first: “pick an answer” or “see if it is right”? (a) see if it is right (b) pick an answer
17. 17.🔢 In a food-order flow, what comes right after “check the cart”? (a) track the order (b) pick a dish (c) add it to the cart (d) pay for the order
18. 18.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 44 px tall
    Start button: 52 px tall
    Help button: 48 px tall
    Back button: 72 px tall (a) Start (b) Save (c) Back (d) Help
19. 19.💾 Data saved only on the phone is lost when ___. (a) you send a message (b) the screen turns off (c) the app is closed (d) the phone is lost
20. 20.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) colour-blind users (d) fast typists
21. 21.🎨 UX stands for user ___. (a) extra (b) express (c) experience (d) example
22. 22.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Cart → Pay
    Design B: Home → Menu → Confirm (a) Design B (b) Design A
23. 23.🔢 In a sign-up flow, which comes LAST? (a) type name and email (b) enter the code sent (c) see the home screen (d) open the app
24. 24.Which of these is true of a wireframe? (a) has the real colours (b) shows the real fonts (c) looks like the real app (d) is a quick sketch
25. 25.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
26. 26.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
27. 27.True or false: buttons almost touching is good button design. (a) True (b) False
28. 28.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ tab bar ]
    [ top bar ]
    [ big picture ]
    [ search box ]
    [ list of items ]
    [ Save button ] (a) tab bar (b) big picture (c) Save button (d) search box
29. 29.🔍 Which is the odd one out? (a) tiny tap areas (b) colour as the only clue (c) captions on videos (d) icons with no labels
30. 30.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a menu button (c) a tab bar
31. 31.Which of these makes the app harder to use? (a) strong colour contrast (b) labels on every icon (c) text that can grow (d) fast-flashing lights
32. 32.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
33. 33.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
34. 34.Which of these is true of a final design? (a) uses plain grey boxes (b) has no real colours (c) shows where things go (d) shows the real fonts
35. 35.🧭 Why should every screen show where you are? (a) to use more battery (b) to hide the menu (c) so users do not get lost (d) to look busy
36. 36.🎨 Is this about UI or UX: the screen layout? (a) UI (b) UX
37. 37.True or false: photos on two devices fits saving on the phone. (a) True (b) False
38. 38.🔢 In a sign-up flow, which comes first: “enter the code sent” or “type name and email”? (a) type name and email (b) enter the code sent
39. 39.🔍 Which is the odd one out? (a) how users feel after (b) whether users get lost (c) the button colours (d) how fast a task is done
40. 40.♿ A screen has 10 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?

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