App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 114 · 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.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Start button: 52 px tall
   Send button: 52 px tall
   Next button: 56 px tall
   Cancel button: 60 px tall
2. 2.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
3. 3.💾 What number does this code show?
   let score = 4;
   score = score - 1;
   score = score + 1;
   show(score);
4. 4.True or false: a final design uses the final pictures. (a) False (b) True
5. 5.🔢 In a photo-post flow, which comes first: “open the camera screen” or “take the photo”? (a) open the camera screen (b) take the photo
6. 6.🖼️ In this wireframe (top to bottom), what is right below the list of items?
   [ list of items ]
   [ big picture ]
   [ Save button ]
   [ menu icon ]
   [ tab bar ] (a) big picture (b) tab bar (c) menu icon (d) Save button
7. 7.🔀 What is a user flow? (a) a type of font (b) the path through screens (c) a charging cable (d) a colour theme
8. 8.Which of these is about UI (the look)? (a) the screen layout (b) how many taps it takes (c) how easy sign-up is (d) whether users get lost
9. 9.Which colour pair is hard to read? (a) white on dark green (b) dark blue on black (c) black on pale grey (d) black on yellow
10. 10.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
11. 11.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Pens → Cart → Search → Pay
    Design B: Home → Size → Pens → Address → Confirm → Shop → Offers (a) Design B (b) Design A
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Done button: 68 px tall
    Cancel button: 32 px tall (a) Cancel (b) Done (c) Save
13. 13.Which of these makes the app harder to use? (a) big touch targets (b) strong colour contrast (c) sudden loud sounds (d) captions on videos
14. 14.💾 What does this code show? (Positions start at 0.)
    let notes = ["Art", "Music", "Hindi"];
    show(notes[1]); (a) Music (b) Hindi (c) Art
15. 15.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 3 to 5 (c) 10 to 12 (d) 1
16. 16.True or false: notes to read offline fits saving on the phone. (a) False (b) True
17. 17.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ filter buttons ]
    [ big picture ]
    [ top bar ]
    [ menu icon ]
    [ title text ]
    [ search box ] (a) filter buttons (b) big picture (c) search box (d) top bar
18. 18.True or false: a draft you are typing fits saving in the cloud. (a) False (b) True
19. 19.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) labels on every icon (d) tiny tap areas
20. 20.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) fast typists (c) the battery (d) the server
21. 21.🔢 In a quiz-app flow, which comes first: “read a question” or “see if it is right”? (a) see if it is right (b) read a question
22. 22.True or false: a final design has no real colours. (a) False (b) True
23. 23.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
24. 24.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
25. 25.🔢 In a photo-post flow, which comes first: “post the photo” or “add a filter”? (a) post the photo (b) add a filter
26. 26.Which of these is true of the back button? (a) hides extra links (b) goes to the last screen (c) shows 3 to 5 icons (d) sits at the bottom
27. 27.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Size → Item → Address
    Design B: Home → Shop → Cart → Address → Search → Menu (a) Design B (b) Design A
28. 28.♿ A screen has 11 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
29. 29.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
30. 30.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) enter the code sent (c) open the app (d) type name and email
31. 31.💾 What number does this code show?
    let score = 5;
    score = score - 5;
    score = score + 3;
    show(score);
32. 32.🔢 In a food-order flow, which comes LAST? (a) add it to the cart (b) track the order (c) open the menu (d) check the cart
33. 33.True or false: a shared to-do list fits saving on the phone. (a) True (b) False
34. 34.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
35. 35.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
36. 36.🧭 Tapping a tab usually takes you to ___. (a) the last app used (b) that tab’s main screen (c) a random page (d) the phone settings
37. 37.♿ A screen has 11 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
38. 38.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. open “Video”
    3. tap the Me tab
    4. tap the Lessons tab
    Which screen are you on now? (a) Help page (b) Quiz (c) Video (d) Lessons
39. 39.Which colour pair is hard to read? (a) white on dark green (b) dark blue on white (c) red on green (d) black on pale grey
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 40 px tall
    Start button: 60 px tall
    Done button: 52 px tall
    Save button: 60 px tall (a) Start (b) Save (c) Cancel (d) Done

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