App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 401 · 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.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
2. 2.💾 What number does this code show?
   let notes = ["Maths", "Art"];
   notes.push("Hindi");
   show(notes.length);
3. 3.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Edit photo”
   2. tap the Quiz tab
   3. tap the Lessons tab
   How many times must you tap Back to reach the main screen of this tab?
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Pay → Address → Search → Menu → Results
   Design B: Home → Confirm → Pens → Cart → Shop → Offers → Pay
5. 5.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Done button: 60 px tall
   Save button: 48 px tall
   Start button: 36 px tall (a) Done (b) Start (c) Save
6. 6.💾 pop() takes off the last item. What does this code show?
   let songs = ["Sunrise", "Stars", "Ocean", "Monsoon", "Rain"];
   songs.pop();
   show(songs[songs.length - 1]); (a) Monsoon (b) Sunrise (c) Stars (d) Ocean
7. 7.True or false: a final design uses the final pictures. (a) True (b) False
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 27 px
   Body text: 20 px
   Title: 17 px
   Hint: 14 px
   Label: 26 px (a) Footer (b) Hint (c) Title (d) Body text
9. 9.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Menu → Results → Pens → Search → Size → Cart
   Design B: Home → Results → Confirm → Search → Menu (a) Design B (b) Design A
10. 10.💾 What number does this code show?
    let points = 8;
    points = points - 2;
    points = points + 2;
    show(points);
11. 11.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
12. 12.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) post the photo (b) take the photo
13. 13.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) read a question (c) see the final score (d) see if it is right
14. 14.💾 What number does this code show?
    let friends = ["Aman", "Kabir"];
    friends.push("Arjun");
    friends.push("Zoya");
    show(friends.length);
15. 15.💾 What number does this code show?
    let coins = 6;
    coins = coins - 1;
    coins = coins + 2;
    show(coins);
16. 16.🖼️ In this wireframe (top to bottom), what is right above the filter buttons?
    [ top bar ]
    [ filter buttons ]
    [ list of items ]
    [ menu icon ] (a) top bar (b) menu icon (c) list of items
17. 17.💾 What number does this code show?
    let friends = ["Zoya", "Riya", "Meera", "Aman"];
    friends.push("Arjun");
    show(friends.length);
18. 18.True or false: how many taps it takes is about UI (the look). (a) False (b) True
19. 19.💾 What does this code show? (Positions start at 0.)
    let songs = ["Rain", "Kites", "Stars", "Ocean"];
    show(songs[1]); (a) Kites (b) Rain (c) Stars (d) Ocean
20. 20.True or false: how users feel after is about UX (the experience). (a) False (b) True
21. 21.💾 Saving data in the cloud lets you ___. (a) shrink the app (b) skip the internet (c) never need a password (d) use it on any device
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 24 px tall
    Cancel button: 64 px tall
    Save button: 72 px tall
    Back button: 52 px tall (a) Save (b) Cancel (c) Back (d) Send
23. 23.🎨 Fewer taps to finish a task usually means ___. (a) better UX (b) a bigger app (c) more colours (d) worse UX
24. 24.True or false: how fast a task is done is about UI (the look). (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) how many taps it takes (b) the button colours (c) how fast a task is done (d) whether users get lost
26. 26.Which of these is true of a final design? (a) is a quick sketch (b) uses plain grey boxes (c) shows the real fonts (d) shows where things go
27. 27.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 44 px tall
    Done button: 44 px tall
    Cancel button: 32 px tall
28. 28.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
29. 29.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
30. 30.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ search box ]
    [ Add button ]
    [ list of items ]
    [ menu icon ] (a) Add button (b) menu icon (c) search box
31. 31.💾 What does this code show? (Positions start at 0.)
    let songs = ["Rain", "Monsoon", "Sunrise"];
    show(songs[0]); (a) Rain (b) Monsoon (c) Sunrise
32. 32.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) plays music (d) reads the screen aloud
33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 32 px tall
    Back button: 36 px tall
    Start button: 36 px tall
34. 34.💾 What number does this code show?
    let points = 3;
    points = points - 2;
    points = points + 2;
    show(points);
35. 35.💾 What number does this code show?
    let notes = ["Science", "Hindi"];
    notes.push("Maths");
    show(notes.length);
36. 36.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Start button is 44 px tall. How many px taller must it be?
38. 38.True or false: the sound on/off setting fits saving on the phone. (a) True (b) False
39. 39.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
40. 40.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Sports", "Art", "Music", "Hindi"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Art (b) Sports (c) Music (d) Maths

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