App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 176 · 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.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 3 to 5 (c) 1 (d) 10 to 12
2. 2.🖼️ In this wireframe (top to bottom), what is right below the big picture?
   [ top bar ]
   [ Add button ]
   [ Save button ]
   [ big picture ]
   [ list of items ]
   [ title text ] (a) title text (b) Add button (c) list of items (d) top bar
3. 3.True or false: a final design uses the final pictures. (a) True (b) False
4. 4.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) make a password (b) type name and email (c) open the app (d) enter the code sent
5. 5.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a clear next step (c) a dead end (d) a random page
6. 6.💾 pop() takes off the last item. What does this code show?
   let songs = ["Stars", "Ocean", "Sunrise", "Monsoon"];
   songs.pop();
   show(songs[songs.length - 1]); (a) Monsoon (b) Sunrise (c) Ocean (d) Stars
7. 7.💾 Saving data in the cloud lets you ___. (a) shrink the app (b) use it on any device (c) skip the internet (d) never need a password
8. 8.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Friend list”
   2. tap Back
   3. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX
10. 10.💾 What number does this code show?
    let notes = ["Art", "Maths", "Music"];
    notes.push("Hindi");
    show(notes.length);
11. 11.🎨 Who should you test the UX with? (a) only yourself (b) the app icon (c) real users (d) nobody
12. 12.💾 What number does this code show?
    let friends = ["Aman", "Kabir"];
    friends.push("Riya");
    show(friends.length);
13. 13.💾 What number does this code show?
    let score = 4;
    score = score - 1;
    score = score + 5;
    show(score);
14. 14.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 13 px
    Label: 20 px
    Hint: 21 px (a) Label (b) Hint (c) Caption
15. 15.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Pens
    Design B: Home → Results → Pens → Offers → Confirm → Item → Cart (a) Design B (b) Design A
16. 16.🎨 Fewer taps to finish a task usually means ___. (a) a bigger app (b) worse UX (c) better UX (d) more colours
17. 17.🧭 Tapping a tab usually takes you to ___. (a) that tab’s main screen (b) a random page (c) the last app used (d) the phone settings
18. 18.💾 What number does this code show?
    let friends = ["Riya", "Zoya"];
    friends.push("Aman");
    friends.push("Meera");
    show(friends.length);
19. 19.🔢 In a quiz-app flow, which comes first: “see the final score” or “tap “Start quiz””? (a) see the final score (b) tap “Start quiz”
20. 20.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ big picture ]
    [ menu icon ]
    [ title text ]
    [ Add button ]
21. 21.Which of these is true of a tab bar? (a) goes to the last screen (b) sits at the bottom (c) opens a list of pages (d) hides extra links
22. 22.🔍 Which is the odd one out? (a) how many taps it takes (b) the icon shapes (c) the button colours (d) the screen layout
23. 23.🔢 In a food-order flow, what comes right after “pick a dish”? (a) pay for the order (b) track the order (c) add it to the cart (d) check the cart
24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 48 px tall
    Save button: 56 px tall
    Help button: 64 px tall
25. 25.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
26. 26.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Confirm → Cart → Size
    Design B: Home → Address → Confirm → Search → Pay → Pens (a) Design B (b) Design A
27. 27.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) sudden loud sounds (d) text that can grow
28. 28.♿ A screen has 6 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
29. 29.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
30. 30.Which of these is true of a final design? (a) has no real colours (b) uses the final pictures (c) is a quick sketch (d) shows where things go
31. 31.True or false: strong colour contrast is good button design. (a) True (b) False
32. 32.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
33. 33.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
    [ tab bar ]
    [ list of items ]
    [ title text ]
    [ filter buttons ]
    [ menu icon ]
    [ top bar ] (a) list of items (b) menu icon (c) top bar (d) filter buttons
34. 34.🔢 In a photo-post flow, which comes first: “add a filter” or “take the photo”? (a) add a filter (b) take the photo
35. 35.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
36. 36.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 56 px tall
    Next button: 68 px tall
    Save button: 36 px tall
    Help button: 68 px tall (a) Cancel (b) Next (c) Save (d) Help
37. 37.💾 What does this code show? (Positions start at 0.)
    let notes = ["Hindi", "Science", "Maths", "Sports", "Art"];
    show(notes[3]); (a) Sports (b) Maths (c) Science (d) Hindi
38. 38.🔍 Which is the odd one out? (a) the font size (b) the button colours (c) how fast a task is done (d) the icon shapes
39. 39.Which of these makes the app harder to use? (a) captions on videos (b) labels on every icon (c) colour as the only clue (d) big touch targets
40. 40.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) a closed app (c) a picture goes here (d) an error

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