App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 11 · 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.💾 pop() takes off the last item. What does this code show?
   let friends = ["Riya", "Arjun", "Kabir", "Aman"];
   friends.pop();
   show(friends[friends.length - 1]); (a) Riya (b) Arjun (c) Aman (d) Kabir
2. 2.🔍 Which is the odd one out? (a) the font size (b) whether users get lost (c) the button colours (d) the theme colours
3. 3.💾 What number does this code show?
   let notes = ["Maths", "Hindi", "Sports"];
   notes.push("Art");
   show(notes.length);
4. 4.🧭 Where is a tab bar usually placed in a phone app? (a) in the middle (b) nowhere (c) inside a button (d) at the bottom
5. 5.💾 In most code, the first item of a list is at position ___. (a) 1 (b) 0 (c) 10 (d) 2
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 17 px
   Footer: 23 px
   Caption: 10 px
7. 7.💾 What does this code show? (Positions start at 0.)
   let notes = ["Art", "Sports", "Music"];
   show(notes[0]); (a) Music (b) Art (c) Sports
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Search → Address → Confirm → Pens
   Design B: Home → Address → Menu → Results → Cart → Confirm
9. 9.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) tiny tap areas (d) strong colour contrast
10. 10.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Confirm → Item → Size
    Design B: Home → Item → Address
11. 11.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Address → Offers → Pens → Item → Menu
    Design B: Home → Cart → Pens
12. 12.💾 What does this code show? (Positions start at 0.)
    let friends = ["Aman", "Kabir", "Meera", "Riya"];
    show(friends[2]); (a) Kabir (b) Meera (c) Aman (d) Riya
13. 13.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Lessons tab
    2. open “Video”
    3. open “Score card”
    Which screen are you on now? (a) Lessons (b) Quiz (c) Video (d) Score card
15. 15.True or false: the screen layout is about UI (the look). (a) True (b) False
16. 16.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
17. 17.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
18. 18.True or false: a big, easy tap area is good button design. (a) True (b) False
19. 19.🔢 In a quiz-app flow, which comes FIRST? (a) see if it is right (b) tap “Start quiz” (c) read a question (d) pick an answer
20. 20.True or false: a wireframe uses the final pictures. (a) True (b) False
21. 21.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
22. 22.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
23. 23.🔍 Which is the odd one out? (a) the font size (b) how easy sign-up is (c) the icon shapes (d) the screen layout
24. 24.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ title text ]
    [ top bar ]
    [ filter buttons ]
    [ tab bar ] (a) tab bar (b) title text (c) top bar (d) filter buttons
25. 25.Which of these is true of a final design? (a) shows where things go (b) has the real colours (c) has no real colours (d) is a quick sketch
26. 26.🔢 In a food-order flow, which comes first: “open the menu” or “pick a dish”? (a) pick a dish (b) open the menu
27. 27.♿ Accessibility means an app works for ___. (a) only experts (b) everyone (c) only the coder (d) nobody
28. 28.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
29. 29.Which of these is true of a tab bar? (a) sits at the bottom (b) opens a list of pages (c) undoes one move (d) goes to the last screen
30. 30.🔢 In a quiz-app flow, what comes right after “read a question”? (a) tap “Start quiz” (b) see the final score (c) see if it is right (d) pick an answer
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Match report”
    3. tap Back
    4. open “Score card”
    Which screen are you on now? (a) Home (b) Search (c) Match report (d) Score card
32. 32.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) tap “Start quiz” (b) see if it is right (c) see the final score (d) read a question
33. 33.🔢 In a sign-up flow, which comes first: “enter the code sent” or “tap “Sign up””? (a) tap “Sign up” (b) enter the code sent
34. 34.Which colour pair is easy to read? (a) white on black (b) red on green (c) light grey on white (d) dark blue on black
35. 35.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it saves data (c) it runs the app (d) it adds colours
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Item → Pay → Confirm
    Design B: Home → Search → Address → Shop → Cart → Menu → Pay
37. 37.Which of these helps everyone use the app? (a) labels on every icon (b) colour as the only clue (c) fast-flashing lights (d) icons with no labels
38. 38.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ big picture ]
    [ top bar ]
    [ filter buttons ] (a) tab bar (b) filter buttons (c) top bar (d) big picture
39. 39.🔢 In a sign-up flow, which comes LAST? (a) tap “Sign up” (b) open the app (c) see the home screen (d) type name and email
40. 40.🔢 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

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