App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 123 · 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?
   Send button: 24 px tall
   Save button: 60 px tall
   Back button: 56 px tall
   Help button: 48 px tall (a) Send (b) Help (c) Save (d) Back
2. 2.🖼️ In this wireframe (top to bottom), what is right below the menu icon?
   [ menu icon ]
   [ search box ]
   [ list of items ]
   [ title text ]
   [ Save button ]
   [ top bar ] (a) Save button (b) top bar (c) list of items (d) search box
3. 3.True or false: the screen layout is about UX (the experience). (a) True (b) False
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Size → Offers → Menu
   Design B: Home → Item → Search
5. 5.🔍 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
6. 6.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
7. 7.🔢 In a photo-post flow, which comes FIRST? (a) open the camera screen (b) take the photo (c) add a filter (d) post the photo
8. 8.🔢 In a quiz-app flow, what comes right after “read a question”? (a) pick an answer (b) tap “Start quiz” (c) see the final score (d) see if it is right
9. 9.♿ A screen has 7 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
10. 10.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Quiz tab
    2. tap the Lessons tab
    3. open “Video”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
11. 11.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
12. 12.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Pay → Search
    Design B: Home → Pay → Confirm → Size → Address → Menu → Search
14. 14.🔢 In a food-order flow, which comes first: “open the menu” or “track the order”? (a) open the menu (b) track the order
15. 15.🔘 Our rule: buttons are at least 48 px tall. The Back button is 20 px tall. How many px taller must it be?
16. 16.🧭 What does the back button usually do? (a) closes all apps (b) deletes the page (c) goes to the last screen (d) opens settings
17. 17.🎨 UI stands for user ___. (a) interface (b) idea (c) input (d) internet
18. 18.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
19. 19.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap the Me tab
    3. tap the Lessons tab
    4. open “Edit photo”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
20. 20.Which colour pair is easy to read? (a) yellow on white (b) light grey on white (c) white on dark green (d) dark blue on black
21. 21.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ Add button ]
    [ Save button ]
    [ top bar ]
    [ list of items ] (a) list of items (b) Add button (c) top bar
22. 22.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap Back
    3. open “Friend list”
    4. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
23. 23.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 60 px tall
    Next button: 44 px tall
    Help button: 32 px tall
    Cancel button: 56 px tall
24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 60 px tall
    Send button: 60 px tall
    Next button: 60 px tall
25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 48 px tall
    Done button: 48 px tall
    Start button: 44 px tall (a) Start (b) Done (c) Save
26. 26.Which of these helps everyone use the app? (a) big touch targets (b) colour as the only clue (c) tiny tap areas (d) sudden loud sounds
27. 27.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) icons with no labels (d) tiny tap areas
28. 28.💾 What does this code show? (Positions start at 0.)
    let songs = ["Stars", "Ocean", "Monsoon", "Sunrise", "Rain"];
    show(songs[0]); (a) Sunrise (b) Ocean (c) Monsoon (d) Stars
29. 29.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ big picture ]
    [ menu icon ]
    [ filter buttons ]
    [ Save button ]
    [ top bar ] (a) menu icon (b) top bar (c) filter buttons (d) big picture
30. 30.🔢 In a sign-up flow, which comes first: “enter the code sent” or “type name and email”? (a) enter the code sent (b) type name and email
31. 31.Which of these is about UX (the experience)? (a) how fast a task is done (b) the button colours (c) the screen layout (d) the theme colours
32. 32.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
33. 33.✏️ What is the easiest way to draw a first wireframe? (a) a microphone (b) pencil and paper (c) a 3D printer (d) a phone case
34. 34.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) see if it is right (c) tap “Start quiz” (d) see the final score
35. 35.Which colour pair is hard to read? (a) black on yellow (b) yellow on white (c) white on black (d) black on pale grey
36. 36.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) it saves data (d) changes are quick
37. 37.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
38. 38.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Item → Size → Confirm
    Design B: Home → Pens → Cart
40. 40.True or false: a class leaderboard fits saving on the phone. (a) True (b) False

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