App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 274 · 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 part of navigation opens a list of pages? (a) a menu button (b) the back button (c) a tab bar
2. 2.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Confirm → Pay → Size → Pens → Menu → Results
   Design B: Home → Shop → Address → Cart → Size → Menu
3. 3.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a random page (c) a clear next step (d) a dead end
4. 4.🔢 In a quiz-app flow, which comes first: “read a question” or “see if it is right”? (a) see if it is right (b) read a question
5. 5.🧭 About how many tabs suit a tab bar best? (a) 3 to 5 (b) 1 (c) 10 to 12 (d) 20
6. 6.🔢 In a food-order flow, what comes right after “check the cart”? (a) add it to the cart (b) pick a dish (c) pay for the order (d) open the menu
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Chat tab
   2. tap the Chat tab
   3. open “Edit photo”
   4. open “Map”
   5. tap Back
   Which screen are you on now? (a) Map (b) Chat (c) Feed (d) Edit photo
8. 8.Which of these fits saving on the phone? (a) photos on two devices (b) your last game level (c) a shared to-do list (d) chat messages to friends
9. 9.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ big picture ]
   [ menu icon ]
   [ top bar ]
   [ filter buttons ] (a) menu icon (b) big picture (c) filter buttons (d) top bar
10. 10.True or false: a wireframe uses the final pictures. (a) False (b) True
11. 11.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a class leaderboard (d) the sound on/off setting
12. 12.🔢 In a food-order flow, what comes right after “pay for the order”? (a) pick a dish (b) add it to the cart (c) track the order (d) check the cart
13. 13.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. open “Badges”
    3. open “Map”
    4. tap Back
    5. tap Back
    Which screen are you on now? (a) Badges (b) Map (c) Edit photo (d) Lessons
14. 14.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
15. 15.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 36 px tall
    Save button: 56 px tall
    Cancel button: 48 px tall
16. 16.Which of these is true of the back button? (a) opens a list of pages (b) goes to the last screen (c) sits at the bottom (d) hides extra links
17. 17.Which of these is true of a final design? (a) has the real colours (b) has no real colours (c) is a quick sketch (d) uses plain grey boxes
18. 18.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Pens → Cart → Offers → Confirm → Shop
    Design B: Home → Cart → Offers → Shop
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 14 px
    Caption: 12 px
    Body text: 19 px
20. 20.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
21. 21.True or false: a final design is a quick sketch. (a) True (b) False
22. 22.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ list of items ]
    [ big picture ]
    [ top bar ]
    [ Save button ] (a) Save button (b) top bar (c) search box (d) big picture
23. 23.🖼️ In this wireframe (top to bottom), what is right below the list of items?
    [ list of items ]
    [ filter buttons ]
    [ menu icon ]
    [ big picture ]
    [ Add button ] (a) big picture (b) menu icon (c) filter buttons (d) Add button
24. 24.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) see if it is right (c) see the final score (d) tap “Start quiz”
25. 25.💾 pop() takes off the last item. What does this code show?
    let songs = ["Monsoon", "Kites", "Ocean", "Sunrise", "Stars"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Sunrise (b) Kites (c) Ocean (d) Monsoon
26. 26.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
27. 27.Which colour pair is easy to read? (a) pale pink on white (b) red on green (c) dark blue on white (d) light grey on white
28. 28.True or false: a class leaderboard fits saving on the phone. (a) False (b) True
29. 29.♿ Accessibility means an app works for ___. (a) only experts (b) everyone (c) nobody (d) only the coder
30. 30.🖼️ How many parts (boxes) does this wireframe have?
    [ big picture ]
    [ search box ]
    [ tab bar ]
    [ Save button ]
31. 31.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a shared to-do list (d) notes to read offline
32. 32.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
33. 33.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) changes are quick (d) it saves data
34. 34.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Pay → Address → Results → Shop → Cart
    Design B: Home → Offers → Confirm → Search
35. 35.Which colour pair is hard to read? (a) white on dark green (b) black on pale grey (c) dark blue on white (d) yellow on white
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Address → Menu → Item → Pens
    Design B: Home → Results → Search → Address → Cart
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap Back
    3. open “Badges”
    4. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?
38. 38.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a sound (d) a long animation
39. 39.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Art", "Sports"];
    show(notes[1]); (a) Maths (b) Sports (c) Art
40. 40.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe

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