App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 340 · 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.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Address → Pens
   Design B: Home → Item → Results → Address → Shop → Menu → Pens
2. 2.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
3. 3.🔘 Our rule: buttons are at least 48 px tall. The Back button is 24 px tall. How many px taller must it be?
4. 4.🧭 Where is a tab bar usually placed in a phone app? (a) in the middle (b) nowhere (c) at the bottom (d) inside a button
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Score card”
   2. tap the Lessons tab
   3. open “Help page”
   4. open “Badges”
   5. tap the Lessons tab
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🧭 Which part of navigation switches main sections? (a) the back button (b) a tab bar (c) a menu button
7. 7.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
8. 8.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Confirm → Item → Pay → Cart → Address
   Design B: Home → Address → Offers → Item → Pens
10. 10.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. tap the Feed tab
    3. open “Edit photo”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
11. 11.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Item → Size → Pens → Pay → Search
    Design B: Home → Menu → Offers → Address → Pay → Results → Confirm (a) Design A (b) Design B
12. 12.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Sports", "Art"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Maths (b) Art (c) Sports
13. 13.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
14. 14.🧭 What does the back button usually do? (a) closes all apps (b) opens settings (c) deletes the page (d) goes to the last screen
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Pens → Menu → Address → Cart → Pay
    Design B: Home → Menu → Pens → Shop → Confirm
16. 16.🧭 Why should every screen show where you are? (a) to look busy (b) so users do not get lost (c) to hide the menu (d) to use more battery
17. 17.🔢 In a sign-up flow, which comes first: “open the app” or “type name and email”? (a) type name and email (b) open the app
18. 18.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
19. 19.True or false: a wireframe shows where things go. (a) False (b) True
20. 20.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ filter buttons ]
    [ search box ]
    [ Add button ]
    [ tab bar ] (a) filter buttons (b) search box (c) tab bar (d) Add button
21. 21.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) an error (c) a picture goes here (d) a closed app
22. 22.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ title text ]
    [ list of items ]
    [ filter buttons ]
    [ top bar ]
    [ big picture ]
    [ Save button ] (a) top bar (b) title text (c) big picture (d) filter buttons
23. 23.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a tab bar (c) a menu button
24. 24.Which of these is true of a tab bar? (a) switches main sections (b) hides extra links (c) opens a list of pages (d) undoes one move
25. 25.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
26. 26.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap Back
    3. open “Friend list”
    4. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
27. 27.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 44 px tall
    Help button: 60 px tall
    Start button: 64 px tall
    Done button: 72 px tall (a) Start (b) Help (c) Done (d) Next
28. 28.✏️ What is a wireframe? (a) the finished app (b) a type of password (c) a simple screen sketch (d) a charging cable
29. 29.🖼️ How many parts (boxes) does this wireframe have?
    [ big picture ]
    [ top bar ]
    [ Add button ]
    [ menu icon ]
30. 30.True or false: how users feel after is about UX (the experience). (a) True (b) False
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 16 px
    Body text: 16 px
    Menu: 20 px
32. 32.True or false: a final design shows where things go. (a) False (b) True
33. 33.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Art", "Science", "Sports"];
    show(notes[0]); (a) Maths (b) Science (c) Sports (d) Art
34. 34.Which of these is true of the back button? (a) switches main sections (b) shows 3 to 5 icons (c) opens a list of pages (d) undoes one move
35. 35.💾 What number does this code show?
    let lives = 4;
    lives = lives - 1;
    lives = lives + 5;
    show(lives);
36. 36.🔀 Why plan the user flow before building? (a) to skip testing (b) to hide the buttons (c) to add more taps (d) so each step is clear
37. 37.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. tap the Chat tab
    3. open “Help page”
    Which screen are you on now? (a) Feed (b) Chat (c) Help page (d) Settings
38. 38.True or false: a wireframe is a quick sketch. (a) True (b) False
39. 39.🖼️ How many parts (boxes) does this wireframe have?
    [ filter buttons ]
    [ big picture ]
    [ search box ]
    [ Save button ]
    [ list of items ]
    [ Add button ]
40. 40.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 40 px tall
    Cancel button: 40 px tall
    Help button: 36 px tall

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