App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 35 · 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 wireframe? (a) a simple screen sketch (b) the finished app (c) a charging cable (d) a type of password
2. 2.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a final design (b) a wireframe
3. 3.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. tap Back
   3. open “Map”
   Which screen are you on now? (a) Chat (b) Match report (c) Feed (d) Map
4. 4.🔢 In a food-order flow, which comes FIRST? (a) pay for the order (b) pick a dish (c) open the menu (d) check the cart
5. 5.Which of these makes the app harder to use? (a) strong colour contrast (b) tiny tap areas (c) text that can grow (d) labels on every icon
6. 6.Which colour pair is hard to read? (a) white on dark green (b) light grey on white (c) black on pale grey (d) black on yellow
7. 7.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Cancel button: 48 px tall
   Back button: 64 px tall
   Save button: 52 px tall
8. 8.💾 What number does this code show?
   let points = 9;
   points = points - 9;
   points = points + 5;
   show(points);
9. 9.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) tap “Sign up” (c) type name and email (d) open the app
10. 10.✏️ 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
11. 11.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap the Feed tab
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 40 px tall
    Send button: 48 px tall
    Save button: 64 px tall (a) Save (b) Start (c) Send
13. 13.Which of these is true of a tab bar? (a) opens a list of pages (b) goes to the last screen (c) shows 3 to 5 icons (d) hides extra links
14. 14.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Next button: 44 px tall
    Back button: 56 px tall (a) Save (b) Back (c) Next
15. 15.🎨 UI stands for user ___. (a) interface (b) input (c) idea (d) internet
16. 16.🔀 Why plan the user flow before building? (a) to skip testing (b) to hide the buttons (c) to add more taps (d) so each step is clear
17. 17.Which colour pair is easy to read? (a) dark blue on black (b) red on green (c) white on dark green (d) yellow on white
18. 18.🖼️ In this wireframe (top to bottom), what is right above the big picture?
    [ Save button ]
    [ search box ]
    [ tab bar ]
    [ big picture ]
    [ filter buttons ]
    [ Add button ] (a) filter buttons (b) tab bar (c) Save button (d) Add button
19. 19.Which of these is about UX (the experience)? (a) how many taps it takes (b) the screen layout (c) the theme colours (d) the font size
20. 20.🔢 In a photo-post flow, which comes first: “take the photo” or “open the camera screen”? (a) take the photo (b) open the camera screen
21. 21.🎨 UX stands for user ___. (a) express (b) example (c) extra (d) experience
22. 22.Which of these is true of a wireframe? (a) looks like the real app (b) uses the final pictures (c) has the real colours (d) has no real colours
23. 23.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Edit photo”
    Which screen are you on now? (a) Me (b) Lessons (c) Edit photo (d) Quiz
24. 24.♿ A screen has 12 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
25. 25.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) home screen (c) shortcut (d) tab bar
26. 26.💾 What number does this code show?
    let notes = ["Art", "Sports"];
    notes.push("Science");
    notes.push("Music");
    show(notes.length);
27. 27.🔢 In a photo-post flow, what comes right after “write a caption”? (a) take the photo (b) add a filter (c) post the photo (d) open the camera screen
28. 28.💾 What number does this code show?
    let score = 4;
    score = score - 1;
    score = score + 4;
    show(score);
29. 29.🔢 In a quiz-app flow, what comes right after “read a question”? (a) tap “Start quiz” (b) see if it is right (c) see the final score (d) pick an answer
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 14 px
    Title: 19 px
    Body text: 18 px
31. 31.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX
32. 32.Which of these is true of a menu button? (a) undoes one move (b) shows 3 to 5 icons (c) hides extra links (d) goes to the last screen
33. 33.Which colour pair is easy to read? (a) light grey on white (b) yellow on white (c) red on green (d) black on pale grey
34. 34.True or false: the font size is about UX (the experience). (a) False (b) True
35. 35.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Lessons tab
    2. open “Edit photo”
    3. open “Video”
    Which screen are you on now? (a) Lessons (b) Video (c) Quiz (d) Edit photo
36. 36.Which of these fits saving in the cloud? (a) a draft you are typing (b) photos on two devices (c) notes to read offline (d) the sound on/off setting
37. 37.True or false: a wireframe looks like the real app. (a) True (b) False
38. 38.🔢 In a quiz-app flow, which comes first: “read a question” or “pick an answer”? (a) pick an answer (b) read a question
39. 39.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Pay → Pens → Search
    Design B: Home → Pens → Results (a) Design B (b) Design A
40. 40.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder

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