App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 16 · 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.🖼️ In this wireframe (top to bottom), what is right above the big picture?
   [ top bar ]
   [ big picture ]
   [ menu icon ]
   [ tab bar ]
   [ list of items ] (a) tab bar (b) menu icon (c) list of items (d) top bar
2. 2.🔢 In a sign-up flow, what comes right after “make a password”? (a) type name and email (b) tap “Sign up” (c) enter the code sent (d) open the app
3. 3.Which of these is true of a final design? (a) has the real colours (b) uses plain grey boxes (c) shows where things go (d) is a quick sketch
4. 4.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a final design (b) a wireframe
5. 5.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Send button: 32 px tall
   Next button: 44 px tall
   Save button: 48 px tall
6. 6.🔢 In a sign-up flow, which comes FIRST? (a) see the home screen (b) enter the code sent (c) make a password (d) open the app
7. 7.Which of these is true of a final design? (a) is a quick sketch (b) shows the real fonts (c) has no real colours (d) uses plain grey boxes
8. 8.True or false: a wireframe has the real colours. (a) True (b) False
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Menu → Pay
   Design B: Home → Size → Menu → Item → Pay → Cart → Address
10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 52 px tall
    Send button: 40 px tall
    Start button: 32 px tall
11. 11.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) big touch targets (d) colour as the only clue
12. 12.💾 pop() takes off the last item. What does this code show?
    let songs = ["Rain", "Kites", "Sunrise"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Sunrise (b) Rain (c) Kites
13. 13.🔍 Which is the odd one out? (a) tiny tap areas (b) strong colour contrast (c) fast-flashing lights (d) colour as the only clue
14. 14.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
15. 15.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a class leaderboard (d) notes to read offline
16. 16.💾 What number does this code show?
    let score = 4;
    score = score - 1;
    score = score + 1;
    show(score);
17. 17.🔢 In a photo-post flow, which comes LAST? (a) take the photo (b) add a filter (c) post the photo (d) open the camera screen
18. 18.🔘 Our rule: buttons are at least 48 px tall. The Done button is 40 px tall. How many px taller must it be?
19. 19.Which of these is true of a wireframe? (a) looks like the real app (b) uses the final pictures (c) shows where things go (d) has the real colours
20. 20.💾 pop() takes off the last item. What does this code show?
    let songs = ["Ocean", "Sunrise", "Stars"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Sunrise (b) Stars (c) Ocean
21. 21.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
22. 22.True or false: the button colours is about UX (the experience). (a) False (b) True
23. 23.🧭 What does the back button usually do? (a) opens settings (b) closes all apps (c) goes to the last screen (d) deletes the page
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 17 px
    Body text: 16 px
    Footer: 14 px
    Title: 26 px
    Label: 22 px (a) Footer (b) Body text (c) Menu (d) Title
25. 25.🔢 In a food-order flow, which comes first: “pick a dish” or “open the menu”? (a) pick a dish (b) open the menu
26. 26.💾 What is a variable? (a) a phone setting (b) a type of screen (c) a picture (d) a named box for a value
27. 27.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Badges”
    3. tap the Home tab
    4. open “Help page”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
28. 28.🔢 In a sign-up flow, which comes LAST? (a) tap “Sign up” (b) see the home screen (c) enter the code sent (d) open the app
29. 29.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) tap “Sign up” (b) open the app (c) see the home screen (d) make a password
30. 30.True or false: the icon shapes is about UX (the experience). (a) True (b) False
31. 31.🔀 In a good flow, each screen should lead to ___. (a) a clear next step (b) a dead end (c) a random page (d) the same screen
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Offers → Menu → Search
    Design B: Home → Pens → Item → Size → Shop (a) Design A (b) Design B
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. open “Map”
    3. tap Back
    Which screen are you on now? (a) Settings (b) Chat (c) Map (d) Feed
34. 34.💾 pop() takes off the last item. What does this code show?
    let notes = ["Music", "Hindi", "Science"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Science (b) Hindi (c) Music
35. 35.🧭 Where is a tab bar usually placed in a phone app? (a) nowhere (b) inside a button (c) at the bottom (d) in the middle
36. 36.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. tap the Lessons tab
    3. open “Video”
    4. tap the Lessons tab
    How many times must you tap Back to reach the main screen of this tab?
37. 37.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
38. 38.True or false: the screen layout is about UI (the look). (a) False (b) True
39. 39.💾 Saving data in the cloud lets you ___. (a) never need a password (b) skip the internet (c) shrink the app (d) use it on any device
40. 40.Which of these fits saving in the cloud? (a) photos on two devices (b) a draft you are typing (c) your last game level (d) the sound on/off setting

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