App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 405 · 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.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
2. 2.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) dead end (c) home screen (d) shortcut
3. 3.💾 What is a variable? (a) a picture (b) a named box for a value (c) a phone setting (d) a type of screen
4. 4.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) check the cart (c) track the order (d) open the menu
5. 5.💾 What number does this code show?
   let coins = 5;
   coins = coins - 2;
   coins = coins + 1;
   show(coins);
6. 6.💾 What does this code show? (Positions start at 0.)
   let friends = ["Meera", "Riya", "Arjun"];
   show(friends[0]); (a) Meera (b) Arjun (c) Riya
7. 7.Which of these fits saving on the phone? (a) the sound on/off setting (b) photos on two devices (c) a class leaderboard (d) chat messages to friends
8. 8.🖼️ How many parts (boxes) does this wireframe have?
   [ Add button ]
   [ menu icon ]
   [ Save button ]
   [ list of items ]
   [ top bar ]
9. 9.💾 What number does this code show?
   let notes = ["Maths", "Art"];
   notes.push("Music");
   notes.push("Science");
   show(notes.length);
10. 10.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ search box ]
    [ Save button ]
    [ top bar ]
    [ filter buttons ] (a) top bar (b) filter buttons (c) search box
11. 11.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
12. 12.Which of these is about UI (the look)? (a) the theme colours (b) whether users get lost (c) how fast a task is done (d) how users feel after
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Address → Pay
    Design B: Home → Address → Cart → Search → Pay → Shop
14. 14.🔢 In a photo-post flow, which comes FIRST? (a) open the camera screen (b) post the photo (c) write a caption (d) take the photo
15. 15.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 64 px tall
    Save button: 36 px tall
    Send button: 36 px tall
    Start button: 36 px tall
16. 16.Which of these is true of a menu button? (a) sits at the bottom (b) switches main sections (c) opens a list of pages (d) shows 3 to 5 icons
17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 68 px tall
    Save button: 32 px tall
    Start button: 52 px tall
    Send button: 52 px tall (a) Start (b) Back (c) Send (d) Save
18. 18.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) the back button (c) a tab bar
19. 19.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
20. 20.Which colour pair is hard to read? (a) white on dark green (b) dark blue on white (c) black on yellow (d) dark blue on black
21. 21.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) the same screen (d) a clear next step
22. 22.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Friend list”
    3. open “Badges”
    4. tap the Search tab
    5. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
23. 23.💾 Which can hold many values in order? (a) a list (b) a single number (c) a switch (d) a button
24. 24.True or false: a wireframe looks like the real app. (a) False (b) True
25. 25.♿ A screen has 8 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
26. 26.True or false: a final design uses plain grey boxes. (a) False (b) True
27. 27.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Badges”
    4. open “Match report”
    5. tap the Feed tab
    How many times must you tap Back to reach the main screen of this tab?
28. 28.Which of these is true of a final design? (a) shows where things go (b) uses plain grey boxes (c) uses the final pictures (d) has no real colours
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 40 px tall
    Back button: 40 px tall
    Save button: 56 px tall
30. 30.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
31. 31.Which of these is true of a final design? (a) is a quick sketch (b) shows where things go (c) has the real colours (d) uses plain grey boxes
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Video”
    3. open “Help page”
    Which screen are you on now? (a) Home (b) Video (c) Help page (d) Search
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. tap Back
    3. open “Video”
    4. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see if it is right (b) pick an answer (c) see the final score (d) read a question
35. 35.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap the Chat tab
    3. tap the Feed tab
    4. open “Map”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
36. 36.Which of these is true of a wireframe? (a) shows where things go (b) has the real colours (c) looks like the real app (d) uses the final pictures
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Back button is 32 px tall. How many px taller must it be?
38. 38.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Map”
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
39. 39.🌗 Is light grey on white easy or hard to read on a button? (a) easy to read (b) hard to read
40. 40.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder

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