App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 875 · 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.✏️ A box with a cross in a wireframe usually means ___. (a) a closed app (b) an error (c) delete this (d) a picture goes here
2. 2.Which of these is true of a final design? (a) uses plain grey boxes (b) is a quick sketch (c) has the real colours (d) has no real colours
3. 3.🔢 In a sign-up flow, which comes FIRST? (a) tap “Sign up” (b) open the app (c) see the home screen (d) enter the code sent
4. 4.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) good UX but poor UI (c) no UI at all (d) good UI but poor UX
5. 5.💾 What number does this code show?
   let coins = 7;
   coins = coins - 5;
   coins = coins + 1;
   show(coins);
6. 6.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
7. 7.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) you send a message (c) the phone is lost (d) the app is closed
8. 8.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
9. 9.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Score card”
   2. open “Badges”
   3. tap Back
   4. tap Back
   How many times must you tap Back to reach the main screen of this tab?
10. 10.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
11. 11.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Add button ]
    [ filter buttons ]
    [ Save button ]
    [ big picture ] (a) Save button (b) filter buttons (c) Add button (d) big picture
12. 12.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) a tab bar (c) the back button
13. 13.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) see the final score (b) tap “Start quiz” (c) read a question (d) see if it is right
14. 14.💾 pop() takes off the last item. What does this code show?
    let notes = ["Science", "Sports", "Music"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Sports (b) Music (c) Science
15. 15.Which of these is true of a final design? (a) has no real colours (b) is a quick sketch (c) uses plain grey boxes (d) uses the final pictures
16. 16.🔢 In a quiz-app flow, which comes LAST? (a) read a question (b) see if it is right (c) see the final score (d) pick an answer
17. 17.🔍 Which is the odd one out? (a) the icon shapes (b) the button colours (c) the font size (d) how fast a task is done
18. 18.True or false: whether users get lost is about UX (the experience). (a) True (b) False
19. 19.💾 What number does this code show?
    let notes = ["Maths", "Sports", "Music"];
    notes.push("Science");
    notes.push("Art");
    show(notes.length);
20. 20.True or false: how fast a task is done is about UI (the look). (a) False (b) True
21. 21.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it adds colours (c) it saves data (d) it runs the app
22. 22.🖼️ In this wireframe (top to bottom), what is right below the Add button?
    [ Save button ]
    [ title text ]
    [ Add button ]
    [ tab bar ]
    [ list of items ] (a) title text (b) list of items (c) Save button (d) tab bar
23. 23.🔢 In a food-order flow, which comes first: “add it to the cart” or “open the menu”? (a) open the menu (b) add it to the cart
24. 24.🔀 Why plan the user flow before building? (a) to hide the buttons (b) so each step is clear (c) to add more taps (d) to skip testing
25. 25.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
26. 26.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ list of items ]
    [ top bar ]
    [ big picture ]
    [ Add button ] (a) list of items (b) top bar (c) big picture (d) Add button
27. 27.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
28. 28.Which of these fits saving in the cloud? (a) your last game level (b) a class leaderboard (c) a draft you are typing (d) notes to read offline
29. 29.🧭 Which part of navigation hides extra links? (a) a menu button (b) a tab bar (c) the back button
30. 30.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 32 px tall. How many px taller must it be?
31. 31.True or false: a final design shows where things go. (a) True (b) False
32. 32.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ menu icon ]
    [ list of items ]
    [ filter buttons ]
    [ Save button ] (a) menu icon (b) list of items (c) filter buttons
33. 33.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) tap “Start quiz” (b) pick an answer (c) read a question (d) see the final score
34. 34.Which of these fits saving on the phone? (a) photos on two devices (b) a class leaderboard (c) a shared to-do list (d) a draft you are typing
35. 35.✏️ What is a wireframe? (a) a charging cable (b) a type of password (c) the finished app (d) a simple screen sketch
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Shop → Item
    Design B: Home → Cart → Size
37. 37.🔢 In a food-order flow, which comes first: “pick a dish” or “add it to the cart”? (a) add it to the cart (b) pick a dish
38. 38.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Results → Pay → Size
    Design B: Home → Address → Pay → Cart → Offers → Pens → Results
39. 39.🧭 Which part of navigation switches main sections? (a) a tab bar (b) a menu button (c) the back button
40. 40.Which of these is true of a tab bar? (a) hides extra links (b) undoes one move (c) goes to the last screen (d) switches main sections

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