App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 605 · 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 the back button? (a) goes to the last screen (b) opens a list of pages (c) shows 3 to 5 icons (d) switches main sections
2. 2.🔢 In a sign-up flow, which comes LAST? (a) enter the code sent (b) tap “Sign up” (c) make a password (d) see the home screen
3. 3.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Back button: 68 px tall
   Next button: 72 px tall
   Done button: 40 px tall
   Cancel button: 68 px tall (a) Cancel (b) Next (c) Back (d) Done
4. 4.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 23 px
   Menu: 16 px
   Caption: 9 px (a) Menu (b) Hint (c) Caption
5. 5.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Confirm → Item → Search
   Design B: Home → Search → Offers → Results → Item
6. 6.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) colour-blind users (c) the server (d) the battery
7. 7.Which of these is true of a wireframe? (a) looks like the real app (b) uses the final pictures (c) has no real colours (d) has the real colours
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 24 px
   Title: 13 px
   Menu: 21 px
   Caption: 19 px
   Label: 26 px (a) Caption (b) Menu (c) Title (d) Body text
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 12 px
   Hint: 20 px
   Menu: 20 px
   Caption: 21 px
   Label: 22 px (a) Caption (b) Title (c) Menu (d) Hint
10. 10.Which of these fits saving on the phone? (a) chat messages to friends (b) a draft you are typing (c) photos on two devices (d) a shared to-do list
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 28 px
    Title: 13 px
    Menu: 24 px (a) Title (b) Footer (c) Menu
12. 12.True or false: a shared to-do list fits saving in the cloud. (a) False (b) True
13. 13.💾 What does this code show? (Positions start at 0.)
    let friends = ["Riya", "Zoya", "Aman"];
    show(friends[1]); (a) Aman (b) Riya (c) Zoya
14. 14.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
15. 15.True or false: a big, easy tap area is poor button design. (a) False (b) True
16. 16.Which colour pair is hard to read? (a) dark blue on white (b) white on dark green (c) red on green (d) white on black
17. 17.🧭 What does the back button usually do? (a) goes to the last screen (b) opens settings (c) closes all apps (d) deletes the page
18. 18.Which of these is about UI (the look)? (a) how easy sign-up is (b) how many taps it takes (c) how fast a task is done (d) the button colours
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 18 px
    Label: 9 px
    Caption: 21 px (a) Caption (b) Label (c) Body text
20. 20.🎨 Is this about UI or UX: how fast a task is done? (a) UI (b) UX
21. 21.Which of these is true of a menu button? (a) opens a list of pages (b) sits at the bottom (c) shows 3 to 5 icons (d) undoes one move
22. 22.True or false: icons with no meaning is good button design. (a) True (b) False
23. 23.Which of these is about UX (the experience)? (a) the theme colours (b) the font size (c) the button colours (d) how fast a task is done
24. 24.🎨 UX stands for user ___. (a) example (b) express (c) experience (d) extra
25. 25.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. tap the Chat tab
    3. tap the Chat tab
    4. open “Friend list”
    Which screen are you on now? (a) Friend list (b) Chat (c) Feed (d) Badges
26. 26.🔢 In a food-order flow, which comes LAST? (a) pick a dish (b) open the menu (c) pay for the order (d) track the order
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 19 px
    Hint: 16 px
    Title: 9 px
    Menu: 18 px (a) Hint (b) Body text (c) Menu (d) Title
28. 28.🔘 Our rule: buttons are at least 48 px tall. The Save button is 44 px tall. How many px taller must it be?
29. 29.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Pay → Confirm → Item → Menu → Cart
    Design B: Home → Item → Search (a) Design B (b) Design A
30. 30.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
31. 31.🎨 Fewer taps to finish a task usually means ___. (a) more colours (b) worse UX (c) a bigger app (d) better UX
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap Back
    3. open “Score card”
    4. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
33. 33.🔢 In a quiz-app flow, which comes first: “see the final score” or “read a question”? (a) see the final score (b) read a question
34. 34.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) text that can grow (d) sudden loud sounds
35. 35.💾 pop() takes off the last item. What does this code show?
    let songs = ["Stars", "Sunrise", "Kites", "Ocean", "Monsoon"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Stars (c) Sunrise (d) Kites
36. 36.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) pick an answer (b) read a question (c) tap “Start quiz” (d) see the final score
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. open “Map”
    3. tap Back
    4. open “Help page”
    Which screen are you on now? (a) Map (b) Help page (c) Home (d) Edit photo
38. 38.True or false: a final design uses plain grey boxes. (a) False (b) True
39. 39.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 24 px tall
    Next button: 64 px tall
    Cancel button: 48 px tall
    Start button: 68 px tall (a) Cancel (b) Next (c) Send (d) Start
40. 40.🧭 Which part of navigation undoes one move? (a) a menu button (b) the back button (c) a tab bar

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