App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 575 · 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 colour pair is easy to read? (a) white on dark green (b) red on green (c) yellow on white (d) pale pink on white
2. 2.🖼️ How many parts (boxes) does this wireframe have?
   [ big picture ]
   [ filter buttons ]
   [ Add button ]
   [ tab bar ]
   [ search box ]
   [ title text ]
3. 3.True or false: a wireframe is a quick sketch. (a) True (b) False
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 11 px
   Body text: 12 px
   Label: 12 px
   Caption: 20 px
5. 5.🔢 In a food-order flow, which comes first: “check the cart” or “pick a dish”? (a) check the cart (b) pick a dish
6. 6.Which colour pair is hard to read? (a) dark blue on white (b) white on dark green (c) dark blue on black (d) black on yellow
7. 7.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Address → Shop → Cart → Results → Confirm
   Design B: Home → Item → Size → Address → Pens → Menu → Results
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Badges”
   2. tap Back
   3. open “Video”
   4. tap the Home tab
   5. open “Edit photo”
   Which screen are you on now? (a) Edit photo (b) Video (c) Badges (d) Home
9. 9.Which of these helps everyone use the app? (a) tiny tap areas (b) icons with no labels (c) big touch targets (d) colour as the only clue
10. 10.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
11. 11.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
12. 12.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
13. 13.✏️ A box with a cross in a wireframe usually means ___. (a) a closed app (b) a picture goes here (c) delete this (d) an error
14. 14.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 56 px tall
    Start button: 44 px tall
    Back button: 48 px tall
    Done button: 60 px tall (a) Start (b) Done (c) Save (d) Back
15. 15.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 52 px tall
    Next button: 56 px tall
    Start button: 40 px tall
16. 16.💾 What does this code show? (Positions start at 0.)
    let notes = ["Hindi", "Maths", "Art"];
    show(notes[1]); (a) Maths (b) Art (c) Hindi
17. 17.True or false: space between buttons is good button design. (a) True (b) False
18. 18.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
19. 19.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Video”
    2. tap Back
    3. open “Map”
    4. open “Video”
    5. tap the Lessons tab
    How many times must you tap Back to reach the main screen of this tab?
20. 20.🔢 In a food-order flow, which comes first: “pick a dish” or “open the menu”? (a) open the menu (b) pick a dish
21. 21.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) tab bar (c) shortcut (d) home screen
22. 22.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
23. 23.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Results → Pay → Cart → Pens → Size
    Design B: Home → Shop → Cart → Confirm → Size (a) Design A (b) Design B
24. 24.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
25. 25.Which of these is true of a tab bar? (a) opens a list of pages (b) hides extra links (c) undoes one move (d) switches main sections
26. 26.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it adds colours (c) it saves data (d) it runs the app
27. 27.🔢 In a sign-up flow, which comes first: “make a password” or “open the app”? (a) make a password (b) open the app
28. 28.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) so anyone can follow (d) to add colour
29. 29.🖼️ How many parts (boxes) does this wireframe have?
    [ filter buttons ]
    [ title text ]
    [ list of items ]
    [ big picture ]
    [ Add button ]
    [ top bar ]
30. 30.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) how users feel after (b) the font size (c) the button colours (d) the screen layout
32. 32.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) enter the code sent (b) type name and email (c) see the home screen (d) make a password
33. 33.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ title text ]
    [ list of items ]
    [ Save button ]
    [ Add button ] (a) title text (b) Add button (c) Save button
34. 34.🔍 Which is the odd one out? (a) sudden loud sounds (b) colour as the only clue (c) labels on every icon (d) icons with no labels
35. 35.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
36. 36.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
37. 37.Which of these fits saving on the phone? (a) photos on two devices (b) a class leaderboard (c) a draft you are typing (d) chat messages to friends
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 60 px tall
    Cancel button: 48 px tall
    Done button: 60 px tall
    Start button: 44 px tall
39. 39.💾 What number does this code show?
    let coins = 8;
    coins = coins - 7;
    coins = coins + 3;
    show(coins);
40. 40.Which of these is about UI (the look)? (a) how easy sign-up is (b) how fast a task is done (c) the font size (d) how many taps it takes

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