App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 193 · 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.Which of these is about UX (the experience)? (a) the screen layout (b) how fast a task is done (c) the font size (d) the button colours
2. 2.Which of these is true of a wireframe? (a) has the real colours (b) uses the final pictures (c) uses plain grey boxes (d) looks like the real app
3. 3.True or false: a big, easy tap area is poor button design. (a) False (b) True
4. 4.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
5. 5.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) strong colour contrast (d) sudden loud sounds
6. 6.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Help button: 40 px tall
   Done button: 60 px tall
   Start button: 60 px tall
   Back button: 36 px tall
7. 7.Which of these is true of a tab bar? (a) hides extra links (b) opens a list of pages (c) goes to the last screen (d) switches main sections
8. 8.🧭 Which part of navigation switches main sections? (a) the back button (b) a menu button (c) a tab bar
9. 9.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ filter buttons ]
   [ Add button ]
   [ top bar ]
   [ Save button ]
   [ search box ] (a) Add button (b) top bar (c) search box (d) Save button
10. 10.✏️ Why draw a wireframe before coding? (a) it adds colours (b) it saves data (c) changes are quick (d) it runs the app
11. 11.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Menu → Item → Address → Offers → Shop
    Design B: Home → Search → Cart → Menu → Address (a) Design A (b) Design B
12. 12.Which of these is true of the back button? (a) opens a list of pages (b) switches main sections (c) undoes one move (d) sits at the bottom
13. 13.💾 What number does this code show?
    let score = 5;
    score = score - 1;
    score = score + 1;
    show(score);
14. 14.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 24 px
    Caption: 20 px
    Label: 15 px
    Menu: 24 px
    Footer: 19 px
15. 15.🔘 Our rule: buttons are at least 48 px tall. The Done button is 44 px tall. How many px taller must it be?
16. 16.🖼️ How many parts (boxes) does this wireframe have?
    [ menu icon ]
    [ tab bar ]
    [ Save button ]
    [ Add button ]
17. 17.💾 Which works with no internet at all? (a) a cloud leaderboard (b) a shared chat (c) a cloud backup (d) data saved on the phone
18. 18.Which of these makes the app harder to use? (a) captions on videos (b) sudden loud sounds (c) strong colour contrast (d) big touch targets
19. 19.🖼️ In this wireframe (top to bottom), what is right below the top bar?
    [ search box ]
    [ big picture ]
    [ top bar ]
    [ filter buttons ]
    [ menu icon ] (a) search box (b) big picture (c) filter buttons (d) menu icon
20. 20.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 22 px
    Body text: 14 px
    Footer: 20 px
22. 22.♿ A screen has 9 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
23. 23.Which of these is true of a final design? (a) is a quick sketch (b) shows where things go (c) uses the final pictures (d) uses plain grey boxes
24. 24.True or false: a final design looks like the real app. (a) True (b) False
25. 25.🔢 In a food-order flow, which comes first: “open the menu” or “add it to the cart”? (a) open the menu (b) add it to the cart
26. 26.Which of these is true of a menu button? (a) hides extra links (b) undoes one move (c) switches main sections (d) sits at the bottom
27. 27.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. open “Video”
    3. tap Back
    4. tap Back
    5. tap the Profile tab
    Which screen are you on now? (a) Profile (b) Edit photo (c) Home (d) Video
28. 28.True or false: the icon shapes is about UX (the experience). (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) whether users get lost (b) how users feel after (c) the button colours (d) how fast a task is done
30. 30.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
31. 31.Which colour pair is easy to read? (a) pale pink on white (b) red on green (c) light grey on white (d) white on black
32. 32.💾 What number does this code show?
    let friends = ["Meera", "Aman"];
    friends.push("Arjun");
    friends.push("Kabir");
    show(friends.length);
33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 64 px tall
    Send button: 72 px tall
    Back button: 36 px tall (a) Save (b) Send (c) Back
34. 34.💾 What number does this code show?
    let score = 3;
    score = score - 2;
    score = score + 4;
    show(score);
35. 35.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Results
    Design B: Home → Offers → Address → Item → Confirm (a) Design B (b) Design A
36. 36.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a tab bar (c) a menu button
37. 37.Which of these is true of a final design? (a) is a quick sketch (b) shows where things go (c) uses plain grey boxes (d) shows the real fonts
38. 38.True or false: a big, easy tap area is good button design. (a) True (b) False
39. 39.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
40. 40.✏️ Do wireframes usually show the final colours? (a) Yes (b) No

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