App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 413 · 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 has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
2. 2.🔢 In a photo-post flow, which comes first: “post the photo” or “open the camera screen”? (a) post the photo (b) open the camera screen
3. 3.🔍 Which is the odd one out? (a) how easy sign-up is (b) how users feel after (c) the font size (d) whether users get lost
4. 4.Which of these is about UI (the look)? (a) the screen layout (b) how easy sign-up is (c) how fast a task is done (d) how many taps it takes
5. 5.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) see the final score (c) see if it is right (d) read a question
6. 6.Which of these fits saving on the phone? (a) the sound on/off setting (b) photos on two devices (c) a shared to-do list (d) a class leaderboard
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. open “Help page”
   3. open “Map”
   4. tap Back
   5. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
8. 8.Which of these is true of a final design? (a) shows where things go (b) is a quick sketch (c) uses the final pictures (d) has no real colours
9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Save button: 48 px tall
   Send button: 52 px tall
   Next button: 56 px tall
10. 10.Which of these makes the app harder to use? (a) big touch targets (b) labels on every icon (c) tiny tap areas (d) strong colour contrast
11. 11.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) strong colour contrast (d) colour as the only clue
12. 12.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ top bar ]
    [ menu icon ]
    [ tab bar ]
    [ search box ]
    [ big picture ] (a) big picture (b) top bar (c) tab bar (d) search box
13. 13.🧭 Tapping a tab usually takes you to ___. (a) the last app used (b) the phone settings (c) a random page (d) that tab’s main screen
14. 14.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
15. 15.🧭 Which part of navigation goes to the last screen? (a) a tab bar (b) a menu button (c) the back button
16. 16.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
17. 17.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
18. 18.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) track the order (c) pick a dish (d) add it to the cart
19. 19.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) post the photo (b) take the photo (c) add a filter (d) write a caption
20. 20.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. open “Edit photo”
    3. open “Map”
    4. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.🔢 In a food-order flow, which comes LAST? (a) add it to the cart (b) check the cart (c) open the menu (d) track the order
22. 22.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
23. 23.💾 pop() takes off the last item. What does this code show?
    let notes = ["Hindi", "Music", "Science"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Hindi (c) Science
24. 24.🔢 In a sign-up flow, which comes first: “make a password” or “tap “Sign up””? (a) make a password (b) tap “Sign up”
25. 25.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud
26. 26.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
27. 27.🔢 In a photo-post flow, which comes LAST? (a) add a filter (b) take the photo (c) post the photo (d) write a caption
28. 28.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Profile tab
    3. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. tap the Search tab
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
30. 30.Which of these fits saving on the phone? (a) a class leaderboard (b) chat messages to friends (c) photos on two devices (d) your last game level
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap the Home tab
    3. tap the Search tab
    4. open “Score card”
    Which screen are you on now? (a) Search (b) Match report (c) Home (d) Score card
32. 32.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
33. 33.💾 What number does this code show?
    let score = 7;
    score = score - 6;
    score = score + 2;
    show(score);
34. 34.💾 What number does this code show?
    let notes = ["Maths", "Hindi", "Art", "Science"];
    notes.push("Music");
    show(notes.length);
35. 35.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 26 px
    Body text: 11 px
    Footer: 19 px (a) Body text (b) Footer (c) Label
37. 37.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
38. 38.Which colour pair is easy to read? (a) light grey on white (b) black on yellow (c) dark blue on black (d) pale pink on white
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Offers → Cart → Menu → Pens → Confirm
    Design B: Home → Item → Pens
40. 40.True or false: a wireframe has the real colours. (a) True (b) False

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