App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 144 · 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.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. tap the Profile tab
   3. tap the Home tab
   4. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
2. 2.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
3. 3.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
4. 4.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a text label (d) a long animation
5. 5.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 18 px
   Menu: 23 px
   Caption: 9 px (a) Menu (b) Caption (c) Hint
6. 6.Which of these is true of a tab bar? (a) sits at the bottom (b) undoes one move (c) goes to the last screen (d) opens a list of pages
7. 7.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Edit photo”
   2. open “Map”
   3. tap Back
   How many times must you tap Back to reach the main screen of this tab?
8. 8.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
9. 9.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) text that can grow (d) colour as the only clue
10. 10.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
    [ tab bar ]
    [ big picture ]
    [ title text ]
    [ top bar ]
    [ menu icon ] (a) big picture (b) top bar (c) menu icon (d) title text
11. 11.🔢 In a quiz-app flow, which comes first: “see if it is right” or “read a question”? (a) see if it is right (b) read a question
12. 12.True or false: a final design has the real colours. (a) False (b) True
13. 13.Which of these is about UX (the experience)? (a) how users feel after (b) the icon shapes (c) the screen layout (d) the font size
14. 14.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
15. 15.🖼️ In this wireframe (top to bottom), what is right below the big picture?
    [ big picture ]
    [ tab bar ]
    [ menu icon ]
    [ filter buttons ]
    [ title text ] (a) title text (b) filter buttons (c) tab bar (d) menu icon
16. 16.🎨 UI stands for user ___. (a) interface (b) internet (c) idea (d) input
17. 17.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ top bar ]
    [ big picture ]
    [ Save button ]
    [ list of items ]
    [ Add button ] (a) Add button (b) list of items (c) big picture (d) tab bar
18. 18.Which of these is about UI (the look)? (a) how fast a task is done (b) the font size (c) whether users get lost (d) how easy sign-up is
19. 19.🔀 What is a user flow? (a) a type of font (b) a charging cable (c) a colour theme (d) the path through screens
20. 20.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap Back
    3. open “Map”
    4. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.🔢 In a photo-post flow, what comes right after “take the photo”? (a) add a filter (b) open the camera screen (c) write a caption (d) post the photo
22. 22.💾 What number does this code show?
    let lives = 7;
    lives = lives - 1;
    lives = lives + 2;
    show(lives);
23. 23.💾 What number does this code show?
    let coins = 9;
    coins = coins - 2;
    coins = coins + 2;
    show(coins);
24. 24.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ list of items ]
    [ filter buttons ]
    [ title text ] (a) filter buttons (b) title text (c) list of items (d) search box
25. 25.🧭 About how many tabs suit a tab bar best? (a) 10 to 12 (b) 1 (c) 20 (d) 3 to 5
26. 26.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. open “Help page”
    3. open “Edit photo”
    Which screen are you on now? (a) Help page (b) Edit photo (c) Video (d) Home
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 10 px
    Menu: 19 px
    Footer: 18 px (a) Footer (b) Menu (c) Caption
28. 28.💾 Saving data in the cloud lets you ___. (a) skip the internet (b) never need a password (c) shrink the app (d) use it on any device
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 60 px tall
    Next button: 56 px tall
    Start button: 32 px tall
    Save button: 40 px tall
30. 30.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) that tab’s main screen (c) a random page (d) the last app used
31. 31.🎨 UX stands for user ___. (a) experience (b) extra (c) example (d) express
32. 32.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
33. 33.True or false: space between buttons is poor button design. (a) True (b) False
34. 34.🔢 In a food-order flow, what comes right after “pay for the order”? (a) open the menu (b) track the order (c) pick a dish (d) check the cart
35. 35.Which colour pair is easy to read? (a) pale pink on white (b) black on pale grey (c) light grey on white (d) dark blue on black
36. 36.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 64 px tall
    Next button: 36 px tall
    Back button: 68 px tall (a) Done (b) Next (c) Back
37. 37.Which of these fits saving on the phone? (a) the sound on/off setting (b) photos on two devices (c) chat messages to friends (d) a shared to-do list
38. 38.🔀 In a good flow, each screen should lead to ___. (a) a dead end (b) a clear next step (c) the same screen (d) a random page
39. 39.🧭 Which part of navigation sits at the bottom? (a) a menu button (b) a tab bar (c) the back button
40. 40.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) post the photo (b) write a caption (c) add a filter (d) take the photo

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