App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 335 · 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.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Size → Pay
   Design B: Home → Menu → Results → Shop
2. 2.🎨 Who should you test the UX with? (a) real users (b) the app icon (c) only yourself (d) nobody
3. 3.Which colour pair is easy to read? (a) red on green (b) light grey on white (c) yellow on white (d) black on pale grey
4. 4.💾 Which can hold many values in order? (a) a switch (b) a button (c) a list (d) a single number
5. 5.🔀 What is a user flow? (a) a type of font (b) a charging cable (c) a colour theme (d) the path through screens
6. 6.Which of these fits saving on the phone? (a) your last game level (b) a class leaderboard (c) photos on two devices (d) chat messages to friends
7. 7.🔢 In a photo-post flow, which comes first: “open the camera screen” or “post the photo”? (a) post the photo (b) open the camera screen
8. 8.🧭 Why should every screen show where you are? (a) to hide the menu (b) to look busy (c) so users do not get lost (d) to use more battery
9. 9.🔀 In a good flow, each screen should lead to ___. (a) a dead end (b) the same screen (c) a clear next step (d) a random page
10. 10.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Size → Item
    Design B: Home → Size → Results
11. 11.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a wireframe (b) a final design
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 64 px tall
    Start button: 68 px tall
    Next button: 64 px tall
    Done button: 28 px tall (a) Done (b) Next (c) Start (d) Save
13. 13.True or false: a shared to-do list fits saving on the phone. (a) False (b) True
14. 14.🎨 UX stands for user ___. (a) express (b) example (c) extra (d) experience
15. 15.🔢 In a sign-up flow, which comes FIRST? (a) see the home screen (b) type name and email (c) open the app (d) tap “Sign up”
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 11 px
    Label: 10 px
    Title: 17 px
    Menu: 14 px
    Body text: 21 px
17. 17.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Cart → Confirm
    Design B: Home → Search → Menu → Address → Offers
18. 18.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) captions on videos (d) icons with no labels
19. 19.Which of these is true of a wireframe? (a) shows the real fonts (b) has no real colours (c) uses the final pictures (d) has the real colours
20. 20.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
21. 21.🔘 Our rule: buttons are at least 48 px tall. The Send button is 28 px tall. How many px taller must it be?
22. 22.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ top bar ]
    [ list of items ]
    [ menu icon ]
    [ search box ] (a) search box (b) menu icon (c) list of items (d) top bar
23. 23.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a final design (b) a wireframe
24. 24.💾 What number does this code show?
    let friends = ["Kabir", "Arjun"];
    friends.push("Meera");
    friends.push("Aman");
    show(friends.length);
25. 25.🔍 Which is the odd one out? (a) how many taps it takes (b) the theme colours (c) whether users get lost (d) how users feel after
26. 26.Which of these is true of a final design? (a) is a quick sketch (b) uses plain grey boxes (c) has no real colours (d) uses the final pictures
27. 27.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 28 px tall
    Cancel button: 64 px tall
    Save button: 60 px tall (a) Cancel (b) Back (c) Save
28. 28.Which of these makes the app harder to use? (a) text that can grow (b) labels on every icon (c) captions on videos (d) colour as the only clue
29. 29.Which of these is true of a tab bar? (a) goes to the last screen (b) opens a list of pages (c) undoes one move (d) shows 3 to 5 icons
30. 30.💾 pop() takes off the last item. What does this code show?
    let songs = ["Sunrise", "Rain", "Ocean", "Stars", "Kites"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Sunrise (c) Stars (d) Rain
31. 31.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap Back
    3. open “Score card”
    4. tap Back
    5. open “Match report”
    Which screen are you on now? (a) Badges (b) Match report (c) Lessons (d) Score card
32. 32.💾 What number does this code show?
    let friends = ["Zoya", "Meera", "Arjun"];
    friends.push("Aman");
    friends.push("Riya");
    show(friends.length);
33. 33.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see if it is right (b) see the final score (c) pick an answer (d) read a question
34. 34.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Search → Address → Menu → Cart → Shop
    Design B: Home → Address → Search → Confirm → Shop
36. 36.Which of these is about UI (the look)? (a) how easy sign-up is (b) how many taps it takes (c) the font size (d) how fast a task is done
37. 37.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ big picture ]
    [ menu icon ]
    [ filter buttons ]
    [ tab bar ]
    [ top bar ] (a) filter buttons (b) big picture (c) menu icon (d) top bar
38. 38.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. open “Edit photo”
    3. tap Back
    4. tap the Feed tab
    How many times must you tap Back to reach the main screen of this tab?
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Item
    Design B: Home → Offers → Search → Size → Address
40. 40.🎨 UI stands for user ___. (a) internet (b) input (c) idea (d) interface

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