App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 319 · 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 does this code show? (Positions start at 0.)
   let friends = ["Arjun", "Aman", "Kabir", "Meera", "Zoya"];
   show(friends[1]); (a) Kabir (b) Meera (c) Arjun (d) Aman
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Next button: 72 px tall
   Cancel button: 52 px tall
   Back button: 40 px tall
   Help button: 48 px tall (a) Next (b) Help (c) Back (d) Cancel
3. 3.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) shortcut (c) home screen (d) tab bar
4. 4.Which of these is true of a wireframe? (a) has the real colours (b) shows the real fonts (c) looks like the real app (d) is a quick sketch
5. 5.True or false: how fast a task is done is about UI (the look). (a) True (b) False
6. 6.Which colour pair is hard to read? (a) red on green (b) white on dark green (c) dark blue on white (d) black on yellow
7. 7.🎨 UI stands for user ___. (a) input (b) internet (c) idea (d) interface
8. 8.Which of these is true of a wireframe? (a) uses the final pictures (b) has the real colours (c) uses plain grey boxes (d) looks like the real app
9. 9.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Pens → Menu → Address → Item → Search
   Design B: Home → Menu → Pay (a) Design B (b) Design A
10. 10.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Done button: 24 px tall
    Back button: 60 px tall
    Help button: 60 px tall (a) Next (b) Done (c) Back (d) Help
12. 12.♿ A screen has 9 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 19 px
    Menu: 16 px
    Body text: 9 px (a) Label (b) Menu (c) Body text
14. 14.Which colour pair is easy to read? (a) red on green (b) pale pink on white (c) black on yellow (d) yellow on white
15. 15.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
16. 16.Which colour pair is hard to read? (a) dark blue on white (b) black on yellow (c) light grey on white (d) black on pale grey
17. 17.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Search → Shop
    Design B: Home → Offers → Search → Item
18. 18.Which of these is about UI (the look)? (a) how many taps it takes (b) how easy sign-up is (c) the button colours (d) how users feel after
19. 19.🔢 In a sign-up flow, which comes LAST? (a) open the app (b) tap “Sign up” (c) type name and email (d) see the home screen
20. 20.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) tap “Start quiz” (c) read a question (d) see the final score
21. 21.Which of these is true of a tab bar? (a) hides extra links (b) goes to the last screen (c) undoes one move (d) switches main sections
22. 22.Which of these fits saving in the cloud? (a) your last game level (b) the sound on/off setting (c) a class leaderboard (d) notes to read offline
23. 23.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ filter buttons ]
    [ top bar ]
    [ Add button ]
    [ menu icon ]
    [ Save button ] (a) top bar (b) Add button (c) menu icon (d) filter buttons
24. 24.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ Add button ]
    [ big picture ]
    [ filter buttons ]
    [ top bar ] (a) Add button (b) tab bar (c) filter buttons (d) top bar
25. 25.Which of these is true of a wireframe? (a) uses the final pictures (b) looks like the real app (c) has the real colours (d) shows where things go
26. 26.💾 What does this code show? (Positions start at 0.)
    let songs = ["Monsoon", "Stars", "Ocean"];
    show(songs[0]); (a) Ocean (b) Monsoon (c) Stars
27. 27.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap the Chat tab
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
28. 28.💾 What number does this code show?
    let points = 3;
    points = points - 1;
    points = points + 1;
    show(points);
29. 29.💾 What number does this code show?
    let songs = ["Rain", "Kites"];
    songs.push("Ocean");
    show(songs.length);
30. 30.🔢 In a food-order flow, which comes first: “pick a dish” or “open the menu”? (a) open the menu (b) pick a dish
31. 31.True or false: how many taps it takes is about UX (the experience). (a) True (b) False
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Address → Shop
    Design B: Home → Cart → Offers (a) Design A (b) Design B
33. 33.True or false: a class leaderboard fits saving on the phone. (a) True (b) False
34. 34.Which of these is true of a menu button? (a) shows 3 to 5 icons (b) sits at the bottom (c) switches main sections (d) opens a list of pages
35. 35.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
36. 36.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a wireframe (b) a final design
37. 37.Which of these is true of a tab bar? (a) goes to the last screen (b) shows 3 to 5 icons (c) hides extra links (d) opens a list of pages
38. 38.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) on the phone (b) in the cloud
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Results
    Design B: Home → Item → Address → Search → Size
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 40 px tall
    Save button: 56 px tall
    Next button: 56 px tall (a) Back (b) Save (c) Next

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