App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 627 · 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.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 17 px
   Body text: 13 px
   Menu: 19 px
   Caption: 18 px
   Hint: 17 px (a) Menu (b) Body text (c) Footer (d) Caption
2. 2.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
3. 3.Which of these is true of a tab bar? (a) shows 3 to 5 icons (b) goes to the last screen (c) opens a list of pages (d) undoes one move
4. 4.🧭 Where is a tab bar usually placed in a phone app? (a) nowhere (b) at the bottom (c) in the middle (d) inside a button
5. 5.Which of these fits saving in the cloud? (a) the sound on/off setting (b) notes to read offline (c) a shared to-do list (d) a draft you are typing
6. 6.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) a tab bar (c) the back button
7. 7.True or false: a wireframe uses plain grey boxes. (a) True (b) False
8. 8.🖼️ In this wireframe (top to bottom), what is right below the search box?
   [ big picture ]
   [ filter buttons ]
   [ search box ]
   [ tab bar ]
   [ top bar ]
   [ Add button ] (a) big picture (b) filter buttons (c) top bar (d) tab bar
9. 9.💾 What does this code show? (Positions start at 0.)
   let songs = ["Sunrise", "Kites", "Rain", "Stars"];
   show(songs[3]); (a) Kites (b) Stars (c) Sunrise (d) Rain
10. 10.✏️ What is the easiest way to draw a first wireframe? (a) a 3D printer (b) a phone case (c) a microphone (d) pencil and paper
11. 11.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) captions on videos (d) fast-flashing lights
12. 12.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
13. 13.🔢 In a sign-up flow, which comes LAST? (a) tap “Sign up” (b) make a password (c) see the home screen (d) open the app
14. 14.💾 What number does this code show?
    let songs = ["Kites", "Rain"];
    songs.push("Stars");
    show(songs.length);
15. 15.True or false: buttons almost touching is poor button design. (a) False (b) True
16. 16.🔘 Our rule: buttons are at least 48 px tall. The Back button is 28 px tall. How many px taller must it be?
17. 17.🧭 Which part of navigation opens a list of pages? (a) the back button (b) a tab bar (c) a menu button
18. 18.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Offers → Results → Menu → Cart
    Design B: Home → Pens → Cart → Address → Offers → Pay → Item
20. 20.🔢 In a food-order flow, which comes first: “pick a dish” or “add it to the cart”? (a) add it to the cart (b) pick a dish
21. 21.🧭 Which part of navigation undoes one move? (a) a menu button (b) the back button (c) a tab bar
22. 22.💾 What does this code show? (Positions start at 0.)
    let songs = ["Sunrise", "Kites", "Stars", "Monsoon"];
    show(songs[3]); (a) Sunrise (b) Kites (c) Stars (d) Monsoon
23. 23.Which colour pair is easy to read? (a) dark blue on white (b) red on green (c) light grey on white (d) dark blue on black
24. 24.💾 What is a variable? (a) a type of screen (b) a named box for a value (c) a phone setting (d) a picture
25. 25.True or false: how easy sign-up is is about UI (the look). (a) True (b) False
26. 26.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) see the final score (c) see if it is right (d) tap “Start quiz”
27. 27.True or false: a final design has the real colours. (a) True (b) False
28. 28.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 36 px tall
    Save button: 52 px tall
    Back button: 72 px tall (a) Back (b) Save (c) Next
29. 29.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
30. 30.True or false: a class leaderboard fits saving in the cloud. (a) True (b) False
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Item → Address → Size → Offers → Pay → Shop
    Design B: Home → Item → Search
32. 32.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) your last game level (d) a class leaderboard
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap Back
    3. open “Map”
    4. tap the Home tab
    Which screen are you on now? (a) Map (b) Badges (c) Search (d) Home
34. 34.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
35. 35.💾 What number does this code show?
    let lives = 4;
    lives = lives - 3;
    lives = lives + 1;
    show(lives);
36. 36.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap the Feed tab
    3. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
37. 37.True or false: a final design has no real colours. (a) False (b) True
38. 38.Which of these fits saving on the phone? (a) a shared to-do list (b) notes to read offline (c) photos on two devices (d) a class leaderboard
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 11 px
    Hint: 20 px
    Menu: 18 px (a) Body text (b) Menu (c) Hint
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 10 px
    Footer: 19 px
    Label: 25 px (a) Footer (b) Label (c) Title

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