App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 189 · 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.True or false: photos on two devices fits saving in the cloud. (a) True (b) False
2. 2.💾 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
3. 3.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Send button: 48 px tall
   Help button: 68 px tall
   Cancel button: 44 px tall
   Back button: 72 px tall (a) Cancel (b) Back (c) Help (d) Send
4. 4.🔢 In a sign-up flow, which comes first: “type name and email” or “tap “Sign up””? (a) tap “Sign up” (b) type name and email
5. 5.🧭 Which part of navigation undoes one move? (a) a menu button (b) the back button (c) a tab bar
6. 6.♿ Accessibility means an app works for ___. (a) only the coder (b) nobody (c) only experts (d) everyone
7. 7.Which of these is true of a final design? (a) shows the real fonts (b) shows where things go (c) uses plain grey boxes (d) has no real colours
8. 8.💾 pop() takes off the last item. What does this code show?
   let friends = ["Zoya", "Arjun", "Aman"];
   friends.pop();
   show(friends[friends.length - 1]); (a) Aman (b) Arjun (c) Zoya
9. 9.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
10. 10.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Map”
    3. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
11. 11.🔍 Which is the odd one out? (a) fast-flashing lights (b) strong colour contrast (c) icons with no labels (d) tiny tap areas
12. 12.Which colour pair is easy to read? (a) dark blue on black (b) dark blue on white (c) yellow on white (d) light grey on white
13. 13.💾 What number does this code show?
    let lives = 5;
    lives = lives - 3;
    lives = lives + 5;
    show(lives);
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Friend list”
    2. tap Back
    3. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
15. 15.True or false: space between buttons is good button design. (a) False (b) True
16. 16.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Confirm → Item
    Design B: Home → Pens → Results → Shop → Offers (a) Design B (b) Design A
17. 17.🔀 What is a user flow? (a) the path through screens (b) a charging cable (c) a colour theme (d) a type of font
18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 52 px tall
    Start button: 32 px tall
    Save button: 52 px tall
19. 19.♿ A screen has 10 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
20. 20.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ search box ]
    [ list of items ]
    [ Save button ]
    [ filter buttons ] (a) filter buttons (b) Save button (c) search box (d) list of items
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Pay
    Design B: Home → Item → Confirm → Address
22. 22.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ Add button ]
    [ list of items ]
    [ tab bar ]
23. 23.🎨 UI stands for user ___. (a) internet (b) idea (c) input (d) interface
24. 24.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Results → Item → Size → Offers
    Design B: Home → Cart → Results → Confirm → Item (a) Design B (b) Design A
25. 25.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
26. 26.🔀 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
27. 27.💾 What is a variable? (a) a phone setting (b) a picture (c) a named box for a value (d) a type of screen
28. 28.Which of these is about UX (the experience)? (a) the font size (b) the screen layout (c) how fast a task is done (d) the icon shapes
29. 29.🎨 Is this about UI or UX: how users feel after? (a) UX (b) UI
30. 30.True or false: a wireframe looks like the real app. (a) False (b) True
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 9 px
    Footer: 21 px
    Hint: 21 px
    Label: 18 px (a) Footer (b) Hint (c) Label (d) Caption
32. 32.🖼️ How many parts (boxes) does this wireframe have?
    [ menu icon ]
    [ title text ]
    [ Save button ]
    [ top bar ]
33. 33.🔀 A screen with no way forward or back is called a ___. (a) home screen (b) shortcut (c) dead end (d) tab bar
34. 34.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Shop → Pay
    Design B: Home → Confirm → Shop → Pens → Pay
35. 35.🔘 Our rule: buttons are at least 48 px tall. The Save button is 44 px tall. How many px taller must it be?
36. 36.🎨 Is this about UI or UX: the screen layout? (a) UX (b) UI
37. 37.🔢 In a quiz-app flow, which comes FIRST? (a) see if it is right (b) see the final score (c) tap “Start quiz” (d) read a question
38. 38.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) on the phone (b) in the cloud
39. 39.True or false: how users feel after is about UX (the experience). (a) True (b) False
40. 40.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Menu → Confirm
    Design B: Home → Pay → Cart → Item → Menu → Confirm

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