App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 141 · 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. Which button is too small?
   Start button: 68 px tall
   Back button: 40 px tall
   Send button: 48 px tall
   Done button: 60 px tall (a) Send (b) Done (c) Start (d) Back
2. 2.🖼️ In this wireframe (top to bottom), what is right above the search box?
   [ Save button ]
   [ top bar ]
   [ list of items ]
   [ search box ]
   [ menu icon ] (a) top bar (b) list of items (c) Save button (d) menu icon
3. 3.🔀 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
4. 4.🔘 Our rule: buttons are at least 48 px tall. The Done button is 28 px tall. How many px taller must it be?
5. 5.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
6. 6.🔢 In a quiz-app flow, which comes FIRST? (a) see the final score (b) tap “Start quiz” (c) see if it is right (d) pick an answer
7. 7.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
8. 8.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Start button: 36 px tall
   Done button: 52 px tall
   Next button: 72 px tall (a) Done (b) Next (c) Start
9. 9.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
10. 10.True or false: a wireframe uses plain grey boxes. (a) False (b) True
11. 11.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
12. 12.🔢 In a sign-up flow, which comes first: “open the app” or “tap “Sign up””? (a) open the app (b) tap “Sign up”
13. 13.🔢 In a photo-post flow, which comes first: “write a caption” or “add a filter”? (a) add a filter (b) write a caption
14. 14.Which of these fits saving in the cloud? (a) a class leaderboard (b) a draft you are typing (c) notes to read offline (d) the sound on/off setting
15. 15.🔢 In a sign-up flow, which comes LAST? (a) open the app (b) tap “Sign up” (c) make a password (d) see the home screen
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 28 px
    Footer: 17 px
    Body text: 12 px (a) Label (b) Footer (c) Body text
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 12 px
    Title: 17 px
    Caption: 19 px (a) Title (b) Caption (c) Body text
18. 18.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Confirm → Item
    Design B: Home → Pens → Address → Pay → Confirm → Cart (a) Design B (b) Design A
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 10 px
    Hint: 18 px
    Title: 14 px
20. 20.Which of these fits saving in the cloud? (a) the sound on/off setting (b) notes to read offline (c) chat messages to friends (d) your last game level
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Menu → Shop → Size
    Design B: Home → Shop → Offers → Item
22. 22.Which colour pair is easy to read? (a) red on green (b) yellow on white (c) light grey on white (d) black on yellow
23. 23.🔘 Our rule: buttons are at least 48 px tall. The Start button is 28 px tall. How many px taller must it be?
24. 24.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
25. 25.Which colour pair is easy to read? (a) yellow on white (b) dark blue on white (c) dark blue on black (d) pale pink on white
26. 26.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Pay → Confirm → Size
    Design B: Home → Menu → Confirm → Shop
27. 27.💾 What number does this code show?
    let lives = 3;
    lives = lives - 1;
    lives = lives + 5;
    show(lives);
28. 28.Which of these helps everyone use the app? (a) big touch targets (b) sudden loud sounds (c) icons with no labels (d) colour as the only clue
29. 29.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Pens → Results → Menu → Pay
    Design B: Home → Cart → Menu
30. 30.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Size → Cart → Results → Item → Address
    Design B: Home → Menu → Results
31. 31.💾 Which can hold many values in order? (a) a button (b) a single number (c) a switch (d) a list
32. 32.🔍 Which is the odd one out? (a) the theme colours (b) how users feel after (c) the button colours (d) the font size
33. 33.Which of these is about UI (the look)? (a) the button colours (b) how easy sign-up is (c) how fast a task is done (d) how many taps it takes
34. 34.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
35. 35.Which of these fits saving on the phone? (a) your last game level (b) a class leaderboard (c) chat messages to friends (d) photos on two devices
36. 36.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
37. 37.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
38. 38.True or false: a big, easy tap area is poor button design. (a) True (b) False
39. 39.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
40. 40.🔢 In a photo-post flow, which comes LAST? (a) take the photo (b) write a caption (c) open the camera screen (d) post the photo

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