App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 827 · 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 number does this code show?
   let coins = 7;
   coins = coins - 2;
   coins = coins + 1;
   show(coins);
2. 2.🖼️ In this wireframe (top to bottom), what is right below the Add button?
   [ big picture ]
   [ Add button ]
   [ top bar ]
   [ list of items ] (a) list of items (b) top bar (c) big picture
3. 3.Which colour pair is hard to read? (a) dark blue on white (b) white on dark green (c) pale pink on white (d) black on pale grey
4. 4.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) shortcut (c) dead end (d) home screen
5. 5.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Item → Pay → Cart → Address → Shop
   Design B: Home → Pens → Address → Shop → Offers
6. 6.True or false: notes to read offline fits saving in the cloud. (a) False (b) True
7. 7.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Item → Menu → Results → Shop → Confirm → Pens
   Design B: Home → Offers → Address → Confirm
8. 8.✏️ What is a wireframe? (a) a type of password (b) a charging cable (c) the finished app (d) a simple screen sketch
9. 9.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
10. 10.🎨 Is this about UI or UX: the theme colours? (a) UI (b) UX
11. 11.🎨 A beautiful app that confuses everyone has ___. (a) no UI at all (b) good UI but poor UX (c) good UX but poor UI (d) perfect UX
12. 12.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) a type of font (d) the path through screens
13. 13.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) sudden loud sounds (d) captions on videos
14. 14.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
15. 15.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Results → Cart → Offers → Pay → Menu → Item
    Design B: Home → Offers → Size → Shop (a) Design A (b) Design B
16. 16.💾 What number does this code show?
    let friends = ["Riya", "Zoya", "Meera", "Kabir"];
    friends.push("Aman");
    friends.push("Arjun");
    show(friends.length);
17. 17.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) a random page (c) that tab’s main screen (d) the last app used
18. 18.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) tiny tap areas (d) captions on videos
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Menu → Item → Cart → Shop → Size
    Design B: Home → Results → Cart
20. 20.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) track the order (c) open the menu (d) add it to the cart
21. 21.🎨 UI stands for user ___. (a) internet (b) idea (c) input (d) interface
22. 22.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Item → Shop → Menu → Offers → Address
    Design B: Home → Pens → Menu → Search
23. 23.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ big picture ]
    [ search box ]
    [ Save button ]
    [ tab bar ]
    [ list of items ] (a) tab bar (b) Save button (c) search box (d) list of items
24. 24.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
25. 25.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) post the photo (c) write a caption (d) add a filter
26. 26.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
27. 27.🔍 Which is the odd one out? (a) how users feel after (b) the button colours (c) the theme colours (d) the icon shapes
28. 28.♿ A screen has 10 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
29. 29.Which colour pair is hard to read? (a) white on black (b) light grey on white (c) black on pale grey (d) dark blue on white
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 21 px
    Title: 10 px
    Footer: 22 px
    Hint: 22 px
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 18 px
    Title: 23 px
    Menu: 20 px
    Caption: 13 px
    Footer: 20 px
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. open “Help page”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
33. 33.💾 What is a variable? (a) a named box for a value (b) a phone setting (c) a type of screen (d) a picture
34. 34.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
    [ search box ]
    [ filter buttons ]
    [ big picture ]
    [ tab bar ]
    [ top bar ] (a) search box (b) big picture (c) filter buttons (d) top bar
35. 35.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap the Profile tab
    3. open “Badges”
    4. open “Match report”
    5. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
36. 36.True or false: a wireframe shows where things go. (a) True (b) False
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 19 px
    Menu: 18 px
    Label: 12 px
    Body text: 23 px
    Title: 16 px (a) Caption (b) Label (c) Menu (d) Body text
38. 38.Which colour pair is easy to read? (a) black on yellow (b) red on green (c) pale pink on white (d) dark blue on black
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pay → Address → Size
    Design B: Home → Pens → Offers → Search → Address → Confirm
40. 40.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Menu
    Design B: Home → Pens → Cart → Menu → Pay → Offers

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