App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 471 · 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.💾 What does this code show? (Positions start at 0.)
   let songs = ["Rain", "Sunrise", "Ocean", "Monsoon", "Kites"];
   show(songs[0]); (a) Monsoon (b) Rain (c) Sunrise (d) Ocean
2. 2.💾 What number does this code show?
   let friends = ["Zoya", "Kabir", "Arjun", "Meera"];
   friends.push("Riya");
   show(friends.length);
3. 3.🧭 Which part of navigation opens a list of pages? (a) the back button (b) a tab bar (c) a menu button
4. 4.💾 pop() takes off the last item. What does this code show?
   let friends = ["Riya", "Aman", "Zoya", "Kabir"];
   friends.pop();
   show(friends[friends.length - 1]); (a) Riya (b) Kabir (c) Aman (d) Zoya
5. 5.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
6. 6.True or false: chat messages to friends fits saving on the phone. (a) True (b) False
7. 7.True or false: a final design uses the final pictures. (a) False (b) True
8. 8.💾 What number does this code show?
   let lives = 3;
   lives = lives - 1;
   lives = lives + 2;
   show(lives);
9. 9.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
10. 10.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) better UX (c) more colours (d) a bigger app
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Friend list”
    3. tap Back
    4. open “Score card”
    Which screen are you on now? (a) Home (b) Search (c) Score card (d) Friend list
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 12 px
    Menu: 14 px
    Caption: 24 px
13. 13.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) read a question (b) pick an answer (c) tap “Start quiz” (d) see the final score
14. 14.🖼️ In this wireframe (top to bottom), what is right above the top bar?
    [ tab bar ]
    [ top bar ]
    [ list of items ]
    [ Add button ]
    [ menu icon ] (a) Add button (b) menu icon (c) list of items (d) tab bar
15. 15.🔢 In a quiz-app flow, which comes FIRST? (a) see the final score (b) tap “Start quiz” (c) read a question (d) see if it is right
16. 16.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
17. 17.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a final design (b) a wireframe
18. 18.🔢 In a food-order flow, which comes first: “pick a dish” or “track the order”? (a) pick a dish (b) track the order
19. 19.True or false: how many taps it takes is about UX (the experience). (a) True (b) False
20. 20.Which colour pair is easy to read? (a) pale pink on white (b) black on pale grey (c) red on green (d) yellow on white
21. 21.💾 Which can hold many values in order? (a) a switch (b) a list (c) a single number (d) a button
22. 22.♿ Why add captions to videos? (a) to hide the sound (b) to add colour (c) so anyone can follow (d) to slow them down
23. 23.True or false: space between buttons is good button design. (a) True (b) False
24. 24.Which of these is true of a final design? (a) shows where things go (b) uses plain grey boxes (c) looks like the real app (d) is a quick sketch
25. 25.Which of these is true of a wireframe? (a) has no real colours (b) looks like the real app (c) has the real colours (d) shows the real fonts
26. 26.💾 What number does this code show?
    let lives = 9;
    lives = lives - 2;
    lives = lives + 4;
    show(lives);
27. 27.Which of these is true of a wireframe? (a) shows the real fonts (b) uses the final pictures (c) looks like the real app (d) is a quick sketch
28. 28.🔢 In a food-order flow, which comes FIRST? (a) open the menu (b) track the order (c) pick a dish (d) add it to the cart
29. 29.🔘 Our rule: buttons are at least 48 px tall. The Help button is 40 px tall. How many px taller must it be?
30. 30.Which of these is about UI (the look)? (a) whether users get lost (b) how easy sign-up is (c) the button colours (d) how many taps it takes
31. 31.🔢 In a sign-up flow, what comes right after “make a password”? (a) tap “Sign up” (b) enter the code sent (c) see the home screen (d) type name and email
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. tap the Home tab
    3. open “Score card”
    4. tap the Search tab
    5. tap the Search tab
    Which screen are you on now? (a) Search (b) Home (c) Score card (d) Map
33. 33.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
34. 34.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap Back
    3. tap the Home tab
    Which screen are you on now? (a) Home (b) Search (c) Profile (d) Video
35. 35.🧭 Which part of navigation shows 3 to 5 icons? (a) a tab bar (b) a menu button (c) the back button
36. 36.♿ A screen has 11 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
37. 37.💾 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
38. 38.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 10 to 12 (c) 3 to 5 (d) 1
39. 39.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ big picture ]
    [ filter buttons ]
    [ menu icon ] (a) tab bar (b) filter buttons (c) big picture (d) menu icon
40. 40.✏️ What is a wireframe? (a) a charging cable (b) a type of password (c) the finished app (d) a simple screen sketch

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