App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 227 · 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 is the odd one out? (a) labels on every icon (b) captions on videos (c) sudden loud sounds (d) big touch targets
2. 2.🧭 Which part of navigation opens a list of pages? (a) a menu button (b) the back button (c) a tab bar
3. 3.Which of these is true of a final design? (a) has no real colours (b) shows where things go (c) uses plain grey boxes (d) shows the real fonts
4. 4.🔢 In a quiz-app flow, which comes first: “pick an answer” or “tap “Start quiz””? (a) pick an answer (b) tap “Start quiz”
5. 5.True or false: the theme colours is about UX (the experience). (a) False (b) True
6. 6.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
7. 7.🖼️ How many parts (boxes) does this wireframe have?
   [ search box ]
   [ list of items ]
   [ Add button ]
   [ top bar ]
   [ tab bar ]
   [ title text ]
8. 8.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a wireframe (b) a final design
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Item → Pens → Confirm → Cart → Shop
   Design B: Home → Shop → Confirm → Address
10. 10.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Shop
    Design B: Home → Cart → Address → Search → Pay
11. 11.Which of these is true of a final design? (a) shows where things go (b) is a quick sketch (c) uses plain grey boxes (d) has the real colours
12. 12.♿ Why add captions to videos? (a) to slow them down (b) to hide the sound (c) to add colour (d) so anyone can follow
13. 13.💾 What number does this code show?
    let stars = 3;
    stars = stars - 2;
    stars = stars + 2;
    show(stars);
14. 14.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 25 px
    Body text: 18 px
    Menu: 9 px (a) Title (b) Body text (c) Menu
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Size → Shop → Confirm
    Design B: Home → Search → Pens
16. 16.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
17. 17.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
18. 18.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) on the phone (b) in the cloud
19. 19.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ title text ]
    [ big picture ]
    [ Add button ]
    [ top bar ]
    [ filter buttons ]
20. 20.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see if it is right (b) pick an answer (c) read a question (d) see the final score
21. 21.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap the Quiz tab
    3. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
22. 22.🧭 Which part of navigation goes to the last screen? (a) a tab bar (b) the back button (c) a menu button
23. 23.🔍 Which is the odd one out? (a) whether users get lost (b) how many taps it takes (c) how users feel after (d) the icon shapes
24. 24.Which of these helps everyone use the app? (a) fast-flashing lights (b) icons with no labels (c) text that can grow (d) tiny tap areas
25. 25.💾 Data saved only on the phone is lost when ___. (a) you send a message (b) the screen turns off (c) the phone is lost (d) the app is closed
26. 26.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
27. 27.Which of these is true of the back button? (a) shows 3 to 5 icons (b) goes to the last screen (c) switches main sections (d) sits at the bottom
28. 28.🔍 Which is the odd one out? (a) the screen layout (b) the theme colours (c) whether users get lost (d) the button colours
29. 29.💾 What number does this code show?
    let lives = 5;
    lives = lives - 1;
    lives = lives + 5;
    show(lives);
30. 30.🔢 In a photo-post flow, which comes first: “open the camera screen” or “take the photo”? (a) take the photo (b) open the camera screen
31. 31.💾 What number does this code show?
    let friends = ["Zoya", "Meera", "Arjun"];
    friends.push("Aman");
    show(friends.length);
32. 32.Which colour pair is easy to read? (a) light grey on white (b) pale pink on white (c) red on green (d) black on pale grey
33. 33.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
34. 34.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Pens → Shop → Results → Menu
    Design B: Home → Cart → Menu → Pay (a) Design A (b) Design B
35. 35.🎨 Is this about UI or UX: how users feel after? (a) UI (b) UX
36. 36.🧭 Why should every screen show where you are? (a) to hide the menu (b) so users do not get lost (c) to look busy (d) to use more battery
37. 37.🎨 UI stands for user ___. (a) internet (b) interface (c) idea (d) input
38. 38.🔘 Our rule: buttons are at least 48 px tall. The Back button is 20 px tall. How many px taller must it be?
39. 39.True or false: a final design shows where things go. (a) True (b) False
40. 40.True or false: notes to read offline fits saving on the phone. (a) False (b) True

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