App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 241 · 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.💾 What does this code show? (Positions start at 0.)
   let friends = ["Aman", "Meera", "Arjun"];
   show(friends[1]); (a) Arjun (b) Meera (c) Aman
2. 2.True or false: a final design has no real colours. (a) False (b) True
3. 3.🔢 In a photo-post flow, which comes LAST? (a) write a caption (b) add a filter (c) take the photo (d) post the photo
4. 4.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) big touch targets (d) tiny tap areas
5. 5.Which of these makes the app harder to use? (a) text that can grow (b) labels on every icon (c) colour as the only clue (d) strong colour contrast
6. 6.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
7. 7.🧭 Why should every screen show where you are? (a) to hide the menu (b) so users do not get lost (c) to use more battery (d) to look busy
8. 8.🧭 What does the back button usually do? (a) goes to the last screen (b) closes all apps (c) deletes the page (d) opens settings
9. 9.🔢 In a sign-up flow, which comes FIRST? (a) tap “Sign up” (b) see the home screen (c) open the app (d) type name and email
10. 10.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Pens → Cart → Confirm
    Design B: Home → Item → Search
11. 11.Which of these is about UX (the experience)? (a) the theme colours (b) the button colours (c) how many taps it takes (d) the icon shapes
12. 12.🎨 Is this about UI or UX: the theme colours? (a) UI (b) UX
13. 13.🖼️ In this wireframe (top to bottom), what is right below the title text?
    [ title text ]
    [ menu icon ]
    [ Save button ]
    [ search box ]
    [ list of items ] (a) search box (b) list of items (c) Save button (d) menu icon
14. 14.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap Back
    3. open “Friend list”
    4. tap Back
    Which screen are you on now? (a) Chat (b) Settings (c) Feed (d) Friend list
15. 15.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 72 px tall
    Back button: 48 px tall
    Next button: 56 px tall
    Done button: 44 px tall (a) Done (b) Next (c) Send (d) Back
16. 16.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read
17. 17.🖼️ In this wireframe (top to bottom), what is right below the top bar?
    [ top bar ]
    [ big picture ]
    [ search box ]
    [ Add button ]
    [ title text ] (a) Add button (b) search box (c) title text (d) big picture
18. 18.🔘 Our rule: buttons are at least 48 px tall. The Start button is 44 px tall. How many px taller must it be?
19. 19.Which of these is true of a wireframe? (a) shows where things go (b) looks like the real app (c) has the real colours (d) shows the real fonts
20. 20.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) the last app used (c) that tab’s main screen (d) a random page
21. 21.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
22. 22.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
23. 23.💾 What number does this code show?
    let lives = 5;
    lives = lives - 2;
    lives = lives + 2;
    show(lives);
24. 24.💾 What number does this code show?
    let points = 7;
    points = points - 1;
    points = points + 3;
    show(points);
25. 25.True or false: a wireframe has the real colours. (a) True (b) False
26. 26.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Profile tab
    3. open “Map”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
27. 27.💾 Which can hold many values in order? (a) a single number (b) a switch (c) a button (d) a list
28. 28.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
29. 29.True or false: chat messages to friends fits saving in the cloud. (a) True (b) False
30. 30.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Results
    Design B: Home → Cart → Shop → Results → Pens → Menu → Address (a) Design A (b) Design B
31. 31.🖼️ In this wireframe (top to bottom), what is right below the title text?
    [ menu icon ]
    [ title text ]
    [ tab bar ]
    [ top bar ]
    [ big picture ] (a) menu icon (b) tab bar (c) top bar (d) big picture
32. 32.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
33. 33.Which of these is true of a wireframe? (a) shows the real fonts (b) uses plain grey boxes (c) has the real colours (d) uses the final pictures
34. 34.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) add it to the cart (c) track the order (d) pick a dish
35. 35.True or false: your last game level fits saving on the phone. (a) False (b) True
36. 36.🔢 In a quiz-app flow, what comes right after “read a question”? (a) pick an answer (b) see if it is right (c) tap “Start quiz” (d) see the final score
37. 37.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Results → Offers
    Design B: Home → Size → Cart (a) Design A (b) Design B
38. 38.🔍 Which is the odd one out? (a) how fast a task is done (b) how easy sign-up is (c) the icon shapes (d) whether users get lost
39. 39.🎨 A beautiful app that confuses everyone has ___. (a) no UI at all (b) perfect UX (c) good UI but poor UX (d) good UX but poor UI
40. 40.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Add button ]
    [ tab bar ]
    [ menu icon ]
    [ top bar ]
    [ search box ] (a) menu icon (b) tab bar (c) search box (d) top bar

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