App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 224 · 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 number does this code show?
   let notes = ["Hindi", "Science", "Art"];
   notes.push("Maths");
   show(notes.length);
2. 2.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
3. 3.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) strong colour contrast (d) tiny tap areas
4. 4.🔘 Our rule: buttons are at least 48 px tall. The Send button is 32 px tall. How many px taller must it be?
5. 5.True or false: a wireframe looks like the real app. (a) True (b) False
6. 6.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
7. 7.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Cart → Confirm → Item → Pens → Search → Size
   Design B: Home → Size → Pay → Search → Cart → Pens (a) Design B (b) Design A
8. 8.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Address → Menu → Pay → Results
   Design B: Home → Item → Address → Size → Pens → Search → Menu (a) Design B (b) Design A
9. 9.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Chat tab
   2. tap the Settings tab
   3. tap the Feed tab
   4. tap the Feed tab
   5. open “Video”
   Which screen are you on now? (a) Chat (b) Feed (c) Settings (d) Video
10. 10.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) makes text tiny (d) plays music
11. 11.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
12. 12.🔍 Which is the odd one out? (a) the font size (b) how easy sign-up is (c) the screen layout (d) the icon shapes
13. 13.♿ A screen has 7 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
14. 14.Which of these makes the app harder to use? (a) strong colour contrast (b) colour as the only clue (c) big touch targets (d) text that can grow
15. 15.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
16. 16.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
17. 17.True or false: a big, easy tap area is good button design. (a) True (b) False
18. 18.True or false: the screen layout is about UI (the look). (a) False (b) True
19. 19.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) add it to the cart (c) pick a dish (d) check the cart
20. 20.🔢 In a food-order flow, which comes first: “pay for the order” or “open the menu”? (a) pay for the order (b) open the menu
21. 21.True or false: the icon shapes is about UX (the experience). (a) True (b) False
22. 22.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a clear next step (c) a random page (d) a dead end
23. 23.🖼️ How many parts (boxes) does this wireframe have?
    [ top bar ]
    [ list of items ]
    [ tab bar ]
    [ search box ]
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 9 px
    Menu: 16 px
    Label: 21 px (a) Footer (b) Menu (c) Label
25. 25.🖼️ How many parts (boxes) does this wireframe have?
    [ Add button ]
    [ tab bar ]
    [ title text ]
    [ list of items ]
    [ big picture ]
    [ top bar ]
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 12 px
    Hint: 20 px
    Title: 18 px
    Footer: 22 px
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Address → Search → Results → Size
    Design B: Home → Item → Search → Offers → Pens → Cart → Pay
28. 28.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) more colours (c) better UX (d) a bigger app
29. 29.🧭 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 Quiz tab
    5. tap the Quiz tab
    Which screen are you on now? (a) Quiz (b) Video (c) Lessons (d) Me
30. 30.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
31. 31.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ big picture ]
    [ Save button ]
    [ top bar ]
    [ title text ]
    [ tab bar ] (a) big picture (b) top bar (c) title text (d) tab bar
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap Back
    3. open “Help page”
    Which screen are you on now? (a) Badges (b) Help page (c) Search (d) Home
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. open “Score card”
    3. tap Back
    4. open “Video”
    5. open “Friend list”
    Which screen are you on now? (a) Home (b) Friend list (c) Score card (d) Video
34. 34.🔍 Which is the odd one out? (a) big touch targets (b) tiny tap areas (c) fast-flashing lights (d) sudden loud sounds
35. 35.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) see the final score (b) tap “Start quiz” (c) see if it is right (d) read a question
36. 36.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
37. 37.Which of these helps everyone use the app? (a) fast-flashing lights (b) colour as the only clue (c) text that can grow (d) icons with no labels
38. 38.💾 pop() takes off the last item. What does this code show?
    let friends = ["Meera", "Zoya", "Riya", "Aman", "Kabir"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Zoya (b) Aman (c) Riya (d) Meera
39. 39.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. open “Edit photo”
    3. tap the Me tab
    How many times must you tap Back to reach the main screen of this tab?
40. 40.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX

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