App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 526 · 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 screen with no way forward or back is called a ___. (a) home screen (b) dead end (c) tab bar (d) shortcut
2. 2.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) to hide the buttons (d) so each step is clear
3. 3.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. tap the Home tab
   3. open “Video”
   4. tap Back
   How many times must you tap Back to reach the main screen of this tab?
4. 4.♿ A screen has 11 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
5. 5.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Back button: 44 px tall
   Cancel button: 48 px tall
   Save button: 60 px tall (a) Save (b) Cancel (c) Back
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Search → Cart
   Design B: Home → Pay → Offers → Menu → Search → Size → Results
7. 7.True or false: photos on two devices fits saving on the phone. (a) False (b) True
8. 8.🖼️ How many parts (boxes) does this wireframe have?
   [ tab bar ]
   [ search box ]
   [ Add button ]
   [ title text ]
9. 9.💾 Saving data in the cloud lets you ___. (a) use it on any device (b) never need a password (c) skip the internet (d) shrink the app
10. 10.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Sports", "Science"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Science (b) Sports (c) Maths
11. 11.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it adds colours (c) it saves data (d) it runs the app
12. 12.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
13. 13.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ menu icon ]
    [ list of items ]
    [ search box ]
    [ tab bar ]
    [ Save button ]
    [ big picture ] (a) search box (b) big picture (c) tab bar (d) list of items
14. 14.Which of these is about UI (the look)? (a) the screen layout (b) how easy sign-up is (c) how users feel after (d) how many taps it takes
15. 15.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
16. 16.🎨 Is this about UI or UX: whether users get lost? (a) UX (b) UI
17. 17.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) take the photo (b) post the photo
18. 18.🔀 What is a user flow? (a) a type of font (b) the path through screens (c) a colour theme (d) a charging cable
19. 19.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) pick a dish (c) track the order (d) add it to the cart
20. 20.True or false: how users feel after is about UI (the look). (a) False (b) True
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 25 px
    Label: 13 px
    Menu: 22 px (a) Menu (b) Label (c) Body text
22. 22.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
23. 23.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Results → Pay → Address
    Design B: Home → Cart → Pens → Pay → Confirm → Item
24. 24.True or false: a tiny 20 px button is good button design. (a) False (b) True
25. 25.True or false: a final design is a quick sketch. (a) True (b) False
26. 26.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) see the final score (b) read a question (c) tap “Start quiz” (d) see if it is right
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 11 px
    Body text: 16 px
    Hint: 25 px
    Footer: 18 px
    Label: 26 px (a) Title (b) Body text (c) Footer (d) Hint
28. 28.True or false: a wireframe uses the final pictures. (a) False (b) True
29. 29.True or false: a final design has the real colours. (a) True (b) False
30. 30.Which of these is true of a tab bar? (a) hides extra links (b) undoes one move (c) opens a list of pages (d) sits at the bottom
31. 31.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
32. 32.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Save button ]
    [ filter buttons ]
    [ menu icon ]
    [ top bar ]
    [ list of items ] (a) filter buttons (b) menu icon (c) list of items (d) Save button
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Video”
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. open “Friend list”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
35. 35.Which of these fits saving on the phone? (a) a shared to-do list (b) chat messages to friends (c) photos on two devices (d) your last game level
36. 36.Which of these fits saving in the cloud? (a) photos on two devices (b) notes to read offline (c) your last game level (d) the sound on/off setting
37. 37.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) the same screen (d) a clear next step
38. 38.🖼️ In this wireframe (top to bottom), what is right below the top bar?
    [ top bar ]
    [ filter buttons ]
    [ big picture ]
    [ tab bar ] (a) tab bar (b) filter buttons (c) big picture
39. 39.🔍 Which is the odd one out? (a) the button colours (b) how easy sign-up is (c) the icon shapes (d) the screen layout
40. 40.Which of these fits saving on the phone? (a) chat messages to friends (b) a draft you are typing (c) a shared to-do list (d) a class leaderboard

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