App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 159 · 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.True or false: a final design looks like the real app. (a) True (b) False
2. 2.🔢 In a photo-post flow, which comes FIRST? (a) write a caption (b) post the photo (c) take the photo (d) open the camera screen
3. 3.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
4. 4.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
5. 5.💾 What does this code show? (Positions start at 0.)
   let notes = ["Science", "Maths", "Sports"];
   show(notes[1]); (a) Science (b) Sports (c) Maths
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Confirm → Address → Offers → Pens → Shop
   Design B: Home → Results → Menu → Search → Item
7. 7.True or false: a final design uses plain grey boxes. (a) False (b) True
8. 8.Which of these fits saving on the phone? (a) chat messages to friends (b) a class leaderboard (c) the sound on/off setting (d) photos on two devices
9. 9.Which of these is true of a menu button? (a) opens a list of pages (b) goes to the last screen (c) sits at the bottom (d) undoes one move
10. 10.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ Save button ]
    [ list of items ]
    [ tab bar ]
    [ search box ] (a) search box (b) Save button (c) tab bar
11. 11.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ list of items ]
    [ big picture ]
    [ menu icon ]
    [ Add button ] (a) Add button (b) menu icon (c) big picture (d) list of items
12. 12.True or false: your last game level fits saving on the phone. (a) True (b) False
13. 13.Which colour pair is easy to read? (a) red on green (b) white on black (c) light grey on white (d) dark blue on black
14. 14.Which colour pair is easy to read? (a) black on yellow (b) yellow on white (c) red on green (d) light grey on white
15. 15.Which of these helps everyone use the app? (a) tiny tap areas (b) colour as the only clue (c) icons with no labels (d) strong colour contrast
16. 16.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
17. 17.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
18. 18.💾 What number does this code show?
    let notes = ["Maths", "Music", "Art", "Sports"];
    notes.push("Science");
    show(notes.length);
19. 19.💾 What number does this code show?
    let score = 8;
    score = score - 2;
    score = score + 5;
    show(score);
20. 20.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 56 px tall
    Back button: 48 px tall
    Send button: 32 px tall
    Save button: 64 px tall
21. 21.Which of these is true of a tab bar? (a) switches main sections (b) undoes one move (c) opens a list of pages (d) goes to the last screen
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 56 px tall
    Start button: 64 px tall
    Cancel button: 44 px tall (a) Cancel (b) Start (c) Done
23. 23.Which of these is about UX (the experience)? (a) the button colours (b) the theme colours (c) how easy sign-up is (d) the screen layout
24. 24.🧭 About how many tabs suit a tab bar best? (a) 1 (b) 10 to 12 (c) 3 to 5 (d) 20
25. 25.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
26. 26.💾 What is a variable? (a) a type of screen (b) a picture (c) a named box for a value (d) a phone setting
27. 27.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
28. 28.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Results → Item → Search
    Design B: Home → Pay → Size → Cart → Item
29. 29.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) it saves data (d) changes are quick
30. 30.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
31. 31.💾 What number does this code show?
    let notes = ["Sports", "Science"];
    notes.push("Music");
    show(notes.length);
32. 32.Which colour pair is hard to read? (a) white on black (b) black on yellow (c) dark blue on white (d) yellow on white
33. 33.True or false: strong colour contrast is good button design. (a) True (b) False
34. 34.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Address → Pens
    Design B: Home → Confirm → Shop → Pens → Pay → Size → Menu
35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 64 px tall
    Send button: 44 px tall
    Save button: 36 px tall
36. 36.💾 Which works with no internet at all? (a) a cloud leaderboard (b) data saved on the phone (c) a shared chat (d) a cloud backup
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. tap the Search tab
    3. tap the Profile tab
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
38. 38.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Confirm → Menu
    Design B: Home → Pens → Shop → Pay → Cart → Size (a) Design B (b) Design A
39. 39.Which of these is true of a tab bar? (a) hides extra links (b) goes to the last screen (c) shows 3 to 5 icons (d) undoes one move
40. 40.🔢 In a food-order flow, which comes first: “check the cart” or “open the menu”? (a) check the cart (b) open the menu

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