App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 131 · 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 colour pair is easy to read? (a) light grey on white (b) black on yellow (c) yellow on white (d) dark blue on black
2. 2.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
3. 3.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
4. 4.🔢 In a food-order flow, which comes FIRST? (a) open the menu (b) check the cart (c) pay for the order (d) track the order
5. 5.💾 What number does this code show?
   let notes = ["Science", "Hindi"];
   notes.push("Maths");
   notes.push("Art");
   show(notes.length);
6. 6.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Edit photo”
   2. tap the Search tab
   3. open “Edit photo”
   Which screen are you on now? (a) Search (b) Home (c) Profile (d) Edit photo
7. 7.💾 What is a variable? (a) a phone setting (b) a picture (c) a named box for a value (d) a type of screen
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Item → Pens → Pay → Cart → Search → Menu
   Design B: Home → Size → Shop → Results → Address
9. 9.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Badges”
   2. tap the Home tab
   3. open “Match report”
   4. tap Back
   How many times must you tap Back to reach the main screen of this tab?
10. 10.💾 What does this code show? (Positions start at 0.)
    let notes = ["Art", "Maths", "Music", "Science"];
    show(notes[1]); (a) Music (b) Maths (c) Art (d) Science
11. 11.Which of these is true of a menu button? (a) undoes one move (b) shows 3 to 5 icons (c) hides extra links (d) switches main sections
12. 12.🎨 Is this about UI or UX: the font size? (a) UX (b) UI
13. 13.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Address → Offers → Pens → Size → Menu
    Design B: Home → Address → Results → Pens (a) Design B (b) Design A
14. 14.✏️ Why draw a wireframe before coding? (a) it saves data (b) changes are quick (c) it runs the app (d) it adds colours
15. 15.True or false: a final design is a quick sketch. (a) True (b) False
16. 16.Which of these is true of the back button? (a) hides extra links (b) shows 3 to 5 icons (c) undoes one move (d) switches main sections
17. 17.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) closes all apps (d) opens settings
18. 18.💾 Which works with no internet at all? (a) data saved on the phone (b) a cloud backup (c) a shared chat (d) a cloud leaderboard
19. 19.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 56 px tall
    Done button: 68 px tall
    Next button: 64 px tall
    Start button: 24 px tall (a) Save (b) Done (c) Next (d) Start
20. 20.True or false: your last game level fits saving on the phone. (a) False (b) True
21. 21.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Item → Shop
    Design B: Home → Shop → Pay → Pens (a) Design B (b) Design A
22. 22.True or false: a final design uses plain grey boxes. (a) False (b) True
23. 23.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Score card”
    3. tap Back
    4. tap the Home tab
    Which screen are you on now? (a) Score card (b) Home (c) Search (d) Profile
24. 24.🔍 Which is the odd one out? (a) tiny tap areas (b) colour as the only clue (c) sudden loud sounds (d) text that can grow
25. 25.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
26. 26.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Pens → Pay → Results → Shop → Item
    Design B: Home → Confirm → Pay (a) Design B (b) Design A
27. 27.Which of these fits saving in the cloud? (a) chat messages to friends (b) a draft you are typing (c) the sound on/off setting (d) notes to read offline
28. 28.💾 What number does this code show?
    let friends = ["Kabir", "Meera", "Arjun"];
    friends.push("Aman");
    friends.push("Riya");
    show(friends.length);
29. 29.💾 What number does this code show?
    let songs = ["Stars", "Ocean"];
    songs.push("Kites");
    songs.push("Monsoon");
    show(songs.length);
30. 30.🎨 Is this about UI or UX: the screen layout? (a) UX (b) UI
31. 31.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ menu icon ]
    [ list of items ]
    [ tab bar ]
    [ search box ]
    [ Add button ]
    [ Save button ] (a) Add button (b) list of items (c) menu icon (d) search box
32. 32.Which colour pair is easy to read? (a) dark blue on black (b) yellow on white (c) white on black (d) light grey on white
33. 33.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
34. 34.♿ A screen has 12 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
35. 35.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Menu → Item → Pens
    Design B: Home → Size → Search (a) Design B (b) Design A
36. 36.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 1 (c) 3 to 5 (d) 10 to 12
37. 37.💾 What does this code show? (Positions start at 0.)
    let songs = ["Sunrise", "Kites", "Rain", "Monsoon", "Stars"];
    show(songs[2]); (a) Rain (b) Monsoon (c) Sunrise (d) Kites
38. 38.Which of these is about UX (the experience)? (a) how easy sign-up is (b) the font size (c) the icon shapes (d) the screen layout
39. 39.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. tap the Home tab
    3. open “Map”
    4. tap Back
    5. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
40. 40.Which of these fits saving on the phone? (a) photos on two devices (b) a draft you are typing (c) chat messages to friends (d) a shared to-do list

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