App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 45 · 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 is the odd one out? (a) sudden loud sounds (b) labels on every icon (c) colour as the only clue (d) fast-flashing lights
2. 2.💾 What does this code show? (Positions start at 0.)
   let songs = ["Monsoon", "Kites", "Stars", "Ocean"];
   show(songs[3]); (a) Monsoon (b) Kites (c) Stars (d) Ocean
3. 3.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Score card”
   2. tap Back
   3. open “Help page”
   4. tap Back
   5. open “Badges”
   How many times must you tap Back to reach the main screen of this tab?
4. 4.True or false: a class leaderboard fits saving on the phone. (a) False (b) True
5. 5.True or false: the button colours is about UI (the look). (a) False (b) True
6. 6.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Confirm → Cart
   Design B: Home → Address → Search → Size → Pens → Menu → Shop (a) Design B (b) Design A
7. 7.🖼️ In this wireframe (top to bottom), what is right above the Add button?
   [ top bar ]
   [ menu icon ]
   [ filter buttons ]
   [ Save button ]
   [ Add button ] (a) filter buttons (b) Save button (c) top bar (d) menu icon
8. 8.🔢 In a sign-up flow, which comes first: “see the home screen” or “type name and email”? (a) see the home screen (b) type name and email
9. 9.🖼️ In this wireframe (top to bottom), what is right below the menu icon?
   [ top bar ]
   [ menu icon ]
   [ list of items ]
   [ tab bar ]
   [ Add button ] (a) top bar (b) tab bar (c) Add button (d) list of items
10. 10.Which of these is about UI (the look)? (a) how users feel after (b) how easy sign-up is (c) whether users get lost (d) the icon shapes
11. 11.Which of these fits saving on the phone? (a) chat messages to friends (b) the sound on/off setting (c) a shared to-do list (d) photos on two devices
12. 12.🔢 In a sign-up flow, which comes LAST? (a) see the home screen (b) enter the code sent (c) tap “Sign up” (d) open the app
13. 13.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a wireframe (b) a final design
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap the Quiz tab
    3. open “Badges”
    Which screen are you on now? (a) Edit photo (b) Quiz (c) Lessons (d) Badges
15. 15.🧭 Which part of navigation undoes one move? (a) the back button (b) a menu button (c) a tab bar
16. 16.Which of these is about UI (the look)? (a) how many taps it takes (b) how users feel after (c) whether users get lost (d) the button colours
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 9 px
    Hint: 21 px
    Body text: 27 px
    Menu: 23 px
    Caption: 20 px (a) Body text (b) Menu (c) Footer (d) Hint
18. 18.True or false: a final design has the real colours. (a) False (b) True
19. 19.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
20. 20.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) to slow them down (d) so anyone can follow
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 14 px
    Caption: 25 px
    Body text: 28 px (a) Footer (b) Caption (c) Body text
22. 22.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
23. 23.🔘 Our rule: buttons are at least 48 px tall. The Help button is 32 px tall. How many px taller must it be?
24. 24.💾 pop() takes off the last item. What does this code show?
    let friends = ["Aman", "Meera", "Kabir"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Aman (b) Meera (c) Kabir
25. 25.True or false: your last game level fits saving in the cloud. (a) False (b) True
26. 26.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) closes all apps (d) opens settings
27. 27.💾 What number does this code show?
    let score = 7;
    score = score - 5;
    score = score + 3;
    show(score);
28. 28.🔢 In a quiz-app flow, which comes FIRST? (a) see if it is right (b) pick an answer (c) tap “Start quiz” (d) read a question
29. 29.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
30. 30.True or false: how many taps it takes is about UX (the experience). (a) False (b) True
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Address → Menu → Cart → Search → Results
    Design B: Home → Menu → Pay → Cart → Confirm → Item → Offers
32. 32.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
33. 33.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Hindi", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Maths (b) Hindi (c) Sports
34. 34.💾 pop() takes off the last item. What does this code show?
    let notes = ["Art", "Maths", "Science", "Hindi", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Science (b) Hindi (c) Maths (d) Art
35. 35.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
36. 36.True or false: how users feel after is about UI (the look). (a) True (b) False
37. 37.🔀 Why plan the user flow before building? (a) to add more taps (b) to hide the buttons (c) to skip testing (d) so each step is clear
38. 38.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ big picture ]
    [ tab bar ]
    [ filter buttons ]
    [ top bar ]
    [ Add button ]
    [ search box ] (a) filter buttons (b) Add button (c) search box (d) top bar
39. 39.🖼️ How many parts (boxes) does this wireframe have?
    [ top bar ]
    [ filter buttons ]
    [ tab bar ]
    [ menu icon ]
40. 40.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design

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