App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 334 · 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.💾 What is a variable? (a) a named box for a value (b) a type of screen (c) a phone setting (d) a picture
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Done button: 32 px tall
   Save button: 52 px tall
   Send button: 52 px tall (a) Send (b) Save (c) Done
3. 3.True or false: a final design shows where things go. (a) True (b) False
4. 4.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) good UI but poor UX (c) no UI at all (d) good UX but poor UI
5. 5.🔢 In a quiz-app flow, which comes first: “see if it is right” or “read a question”? (a) see if it is right (b) read a question
6. 6.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a wireframe (b) a final design
7. 7.🔢 In a quiz-app flow, which comes first: “pick an answer” or “see if it is right”? (a) pick an answer (b) see if it is right
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Friend list”
   2. tap Back
   3. tap the Search tab
   Which screen are you on now? (a) Friend list (b) Search (c) Home (d) Profile
9. 9.🧭 Which part of navigation opens a list of pages? (a) the back button (b) a menu button (c) a tab bar
10. 10.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap Back
    3. open “Friend list”
    Which screen are you on now? (a) Search (b) Home (c) Video (d) Friend list
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 60 px tall
    Cancel button: 32 px tall
    Start button: 48 px tall (a) Done (b) Cancel (c) Start
12. 12.Which colour pair is easy to read? (a) yellow on white (b) black on pale grey (c) pale pink on white (d) dark blue on black
13. 13.💾 pop() takes off the last item. What does this code show?
    let songs = ["Stars", "Monsoon", "Ocean", "Sunrise", "Kites"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Stars (c) Monsoon (d) Sunrise
14. 14.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. open “Map”
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
16. 16.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
17. 17.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Help page”
    3. tap Back
    4. open “Video”
    Which screen are you on now? (a) Video (b) Home (c) Search (d) Help page
18. 18.💾 What number does this code show?
    let stars = 8;
    stars = stars - 6;
    stars = stars + 2;
    show(stars);
19. 19.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
20. 20.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
21. 21.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
    [ top bar ]
    [ title text ]
    [ tab bar ]
    [ Save button ] (a) top bar (b) Save button (c) title text
22. 22.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
23. 23.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
24. 24.✏️ Why draw a wireframe before coding? (a) it saves data (b) changes are quick (c) it adds colours (d) it runs the app
25. 25.🖼️ In this wireframe (top to bottom), what is right below the Add button?
    [ Add button ]
    [ search box ]
    [ menu icon ]
    [ big picture ]
    [ tab bar ] (a) big picture (b) search box (c) tab bar (d) menu icon
26. 26.True or false: a clear word like Save is poor button design. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) text that can grow (d) labels on every icon
28. 28.🧭 What does the back button usually do? (a) deletes the page (b) closes all apps (c) opens settings (d) goes to the last screen
29. 29.🔢 In a sign-up flow, which comes LAST? (a) open the app (b) see the home screen (c) type name and email (d) make a password
30. 30.True or false: icons with no meaning is good button design. (a) True (b) False
31. 31.♿ A screen has 5 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
32. 32.🔢 In a quiz-app flow, which comes LAST? (a) see the final score (b) pick an answer (c) see if it is right (d) tap “Start quiz”
33. 33.Which of these is true of a wireframe? (a) uses the final pictures (b) shows the real fonts (c) has no real colours (d) has the real colours
34. 34.💾 What number does this code show?
    let notes = ["Hindi", "Sports", "Music", "Science"];
    notes.push("Art");
    notes.push("Maths");
    show(notes.length);
35. 35.🔘 Our rule: buttons are at least 48 px tall. The Help button is 40 px tall. How many px taller must it be?
36. 36.True or false: your last game level fits saving in the cloud. (a) False (b) True
37. 37.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
38. 38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 72 px tall
    Start button: 44 px tall
    Help button: 60 px tall (a) Start (b) Done (c) Help
39. 39.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a type of font (d) a charging cable
40. 40.🎨 Is this about UI or UX: how many taps it takes? (a) UI (b) UX

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