App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 547 · 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 class leaderboard fits saving in the cloud. (a) False (b) True
2. 2.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
3. 3.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Quiz tab
   2. tap the Lessons tab
   3. open “Score card”
   Which screen are you on now? (a) Me (b) Quiz (c) Lessons (d) Score card
4. 4.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Edit photo”
   2. open “Badges”
   3. tap Back
   How many times must you tap Back to reach the main screen of this tab?
5. 5.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Results → Menu → Pens → Address
   Design B: Home → Pay → Results → Menu → Cart → Shop → Search
7. 7.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Quiz tab
   2. open “Help page”
   3. tap Back
   4. open “Badges”
   5. tap Back
   Which screen are you on now? (a) Lessons (b) Quiz (c) Badges (d) Help page
8. 8.💾 What number does this code show?
   let stars = 4;
   stars = stars - 3;
   stars = stars + 1;
   show(stars);
9. 9.🧭 Which part of navigation goes to the last screen? (a) the back button (b) a tab bar (c) a menu button
10. 10.🔢 In a quiz-app flow, which comes FIRST? (a) see the final score (b) read a question (c) pick an answer (d) tap “Start quiz”
11. 11.💾 Which can hold many values in order? (a) a single number (b) a button (c) a list (d) a switch
12. 12.💾 What number does this code show?
    let friends = ["Riya", "Arjun", "Meera"];
    friends.push("Aman");
    show(friends.length);
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 15 px
    Footer: 16 px
    Title: 10 px
    Hint: 18 px
    Label: 13 px
14. 14.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Body text: 17 px
    Footer: 24 px
    Menu: 17 px
    Caption: 10 px
15. 15.💾 In most code, the first item of a list is at position ___. (a) 2 (b) 0 (c) 10 (d) 1
16. 16.True or false: a final design is a quick sketch. (a) False (b) True
17. 17.💾 What does this code show? (Positions start at 0.)
    let songs = ["Ocean", "Monsoon", "Rain", "Sunrise", "Kites"];
    show(songs[2]); (a) Rain (b) Sunrise (c) Monsoon (d) Ocean
18. 18.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) check the cart (b) open the menu (c) pick a dish (d) track the order
19. 19.🔍 Which is the odd one out? (a) how fast a task is done (b) whether users get lost (c) how easy sign-up is (d) the theme colours
20. 20.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
21. 21.🧭 Which part of navigation hides extra links? (a) the back button (b) a tab bar (c) a menu button
22. 22.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 25 px
    Footer: 14 px
    Title: 17 px (a) Title (b) Body text (c) Footer
24. 24.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 64 px tall
    Start button: 28 px tall
    Next button: 52 px tall (a) Start (b) Done (c) Next
25. 25.Which of these is about UI (the look)? (a) whether users get lost (b) the icon shapes (c) how fast a task is done (d) how easy sign-up is
26. 26.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
27. 27.🖼️ In this wireframe (top to bottom), what is right above the Add button?
    [ tab bar ]
    [ search box ]
    [ big picture ]
    [ list of items ]
    [ Add button ] (a) search box (b) tab bar (c) big picture (d) list of items
28. 28.Which of these is true of a wireframe? (a) uses the final pictures (b) uses plain grey boxes (c) looks like the real app (d) has the real colours
29. 29.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Cart → Confirm → Size
    Design B: Home → Offers → Confirm → Menu (a) Design B (b) Design A
30. 30.✏️ A box with a cross in a wireframe usually means ___. (a) a picture goes here (b) a closed app (c) delete this (d) an error
31. 31.Which of these helps everyone use the app? (a) tiny tap areas (b) icons with no labels (c) strong colour contrast (d) fast-flashing lights
32. 32.🧭 Tapping a tab usually takes you to ___. (a) that tab’s main screen (b) the phone settings (c) a random page (d) the last app used
33. 33.🖼️ How many parts (boxes) does this wireframe have?
    [ filter buttons ]
    [ search box ]
    [ big picture ]
    [ title text ]
34. 34.True or false: grey text on grey is poor button design. (a) False (b) True
35. 35.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
36. 36.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
37. 37.True or false: how users feel after is about UI (the look). (a) True (b) False
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 32 px tall
    Done button: 40 px tall
    Back button: 60 px tall
39. 39.Which colour pair is easy to read? (a) yellow on white (b) dark blue on black (c) light grey on white (d) black on pale grey
40. 40.Which of these is true of a wireframe? (a) looks like the real app (b) has the real colours (c) shows the real fonts (d) is a quick sketch

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