App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 3 · 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.Which of these is true of a final design? (a) uses the final pictures (b) is a quick sketch (c) uses plain grey boxes (d) shows where things go
2. 2.🧭 What does the back button usually do? (a) closes all apps (b) deletes the page (c) goes to the last screen (d) opens settings
3. 3.🔢 In a photo-post flow, which comes first: “take the photo” or “add a filter”? (a) add a filter (b) take the photo
4. 4.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
5. 5.Which of these is true of a final design? (a) has no real colours (b) looks like the real app (c) uses plain grey boxes (d) shows where things go
6. 6.🖼️ How many parts (boxes) does this wireframe have?
   [ top bar ]
   [ title text ]
   [ list of items ]
   [ filter buttons ]
7. 7.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
8. 8.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) how users feel after (d) the button colours
9. 9.🔢 In a sign-up flow, which comes first: “make a password” or “see the home screen”? (a) see the home screen (b) make a password
10. 10.True or false: a final design is a quick sketch. (a) True (b) False
11. 11.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ top bar ]
    [ Add button ]
    [ menu icon ]
    [ list of items ]
    [ Save button ] (a) Save button (b) top bar (c) Add button (d) menu icon
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 64 px tall
    Back button: 48 px tall
    Done button: 44 px tall
    Save button: 64 px tall (a) Back (b) Save (c) Next (d) Done
13. 13.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. open “Badges”
    3. open “Score card”
    Which screen are you on now? (a) Badges (b) Chat (c) Score card (d) Feed
14. 14.🔢 In a food-order flow, which comes first: “add it to the cart” or “pick a dish”? (a) pick a dish (b) add it to the cart
15. 15.Which of these is true of the back button? (a) sits at the bottom (b) switches main sections (c) shows 3 to 5 icons (d) undoes one move
16. 16.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
17. 17.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a bright colour (c) a text label (d) a sound
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 12 px
    Hint: 22 px
    Title: 23 px
    Label: 20 px
19. 19.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
20. 20.True or false: a wireframe shows the real fonts. (a) True (b) False
21. 21.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
22. 22.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ menu icon ]
    [ search box ]
    [ big picture ]
    [ list of items ]
    [ tab bar ] (a) list of items (b) tab bar (c) menu icon (d) search box
23. 23.💾 Which can hold many values in order? (a) a switch (b) a button (c) a list (d) a single number
24. 24.🧭 Tapping a tab usually takes you to ___. (a) a random page (b) that tab’s main screen (c) the phone settings (d) the last app used
25. 25.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) tap “Start quiz” (b) see if it is right (c) read a question (d) see the final score
26. 26.True or false: the icon shapes is about UX (the experience). (a) False (b) True
27. 27.💾 What number does this code show?
    let stars = 3;
    stars = stars - 3;
    stars = stars + 1;
    show(stars);
28. 28.🎨 Is this about UI or UX: the screen layout? (a) UX (b) UI
29. 29.Which colour pair is hard to read? (a) black on pale grey (b) dark blue on white (c) dark blue on black (d) white on dark green
30. 30.🧭 About how many tabs suit a tab bar best? (a) 1 (b) 20 (c) 10 to 12 (d) 3 to 5
31. 31.🔢 In a sign-up flow, which comes FIRST? (a) tap “Sign up” (b) see the home screen (c) open the app (d) make a password
32. 32.🔢 In a photo-post flow, which comes first: “add a filter” or “open the camera screen”? (a) add a filter (b) open the camera screen
33. 33.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Cart → Item → Offers → Address
    Design B: Home → Cart → Item → Pens → Size → Menu → Shop (a) Design B (b) Design A
34. 34.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. tap Back
    3. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Hint: 17 px
    Body text: 12 px
    Footer: 20 px
    Caption: 17 px
36. 36.Which of these is about UI (the look)? (a) how easy sign-up is (b) whether users get lost (c) the icon shapes (d) how users feel after
37. 37.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
38. 38.🧭 Which part of navigation hides extra links? (a) a menu button (b) a tab bar (c) the back button
39. 39.🔍 Which is the odd one out? (a) how fast a task is done (b) whether users get lost (c) how many taps it takes (d) the theme colours
40. 40.🔢 In a food-order flow, what comes right after “pay for the order”? (a) pick a dish (b) open the menu (c) add it to the cart (d) track the order

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