Sencha MCQ Questions Answers

1. What is Sencha Touch?

2. What is the great way to allow the user to swipe through multiple full-screen pages?

3. Which of these is a technique for improving page load times when some browsers are not able to make large numbers of simultaneous requests to servers on the same domain?

4. Which of the following would be a proper implementation of createDelayed().

5. What is the name of the documentation tool provided by Sencha?

6. During runtime applications can use the validate() method on model instance to trigger ____.

7. Which of the following is not a subclass of Text?

8. Class names should be properly namespaced using which notation?

9. Jasmine is a JavaScript BDD library. What makes Jasmine special?

10. True or False? Method names may only contain alphanumeric characters.

11. If we create a container 300px wide with flex configs of 1 and 2, what will be the pixel width of each of the flex items?

12. Which syntax should you use to get automatic getters and setters and have a much cleaner codebase?

13. What is app.js?

14. What are proxies responsible for?

15. The most basic Sencha application consists of, at least, each the following: the Sencha libraries, ___, JavaScript file containing the apps source code.

16. What type of structures does Sencha Touch follow?

17. What is the class "decode" shorthand for?

18. Which of these are methods of every config?

19. What is the difference between VBox and HBox?

20. Which of these are unique problems in deploying web-based charts on mobile touch devices as opposed to desktop environments?

21. What is the following code doing? Ext.define('App.new.CustomList' {extend: 'Ext.dataview, //...}); Ext.create(App.new.CustomList);

22. What is the function used to determine how the child Components should be organized and displayed on the screen?

23. What is the function of Controllers?

24. What is Ext?

25. What is Xtype?

26. Which of these are acceptable variable names?

27. What is a listener?

28. Why is it often a good idea to destroy Components when you know you won't need them any more?

29. What does MVC stands for?

30. What is Sencha?

31. What type of apps are developed through the Sencha Touch Framework?

32. Which of these are capabilities of Components in Sencha Touch?

33. What is Ext.container.Viewport?

34. Which naming convention should acronyms follow?

35. True or False? Sencha 2.x has a backwards compatibility feature to assist in migrating your 1.x code.

36. What web technologies are used in Sencha?

37. Which of these are a valid character to include in a class name?

38. What is Sencha.io Scr?

39. True or False? In Touch Charts, not all CSS style rules behave the same (or even work) in an .scss file.

40. True or False? Classes that are not distributed by Sencha should never use Ext as the top-level namespace.

41. To use Sencha.io Src in its default mode, you must prefix your absolute src attribute with:

42. Which sentence about Ext.data.Store is TRUE?

43. What is the main difference between init() and launch()?

44. How long does sencha.io src cache images?

45. In: "src='http://src.sencha.io/x50/http://sencha.com/files/u.jpg'," What does x50 represent?

46. In the Drawing and Charting Package, which class manages both the rendering of each series and how the axes are drawn and defined?

47. How are new applications generated in Sencha Touch?

48. Sencha's theming subsystem is called Syntactically _____ Stylesheets.

49. All of the configurations for a given Component are listed in the "Config options" section of which page?

50. Unless you tell it otherwise, Sencha.io Src will resize the image to fit the physical screen of the mobile handset visiting your site, based on:

51. What do profiles allow developers to offer?

52. In order for this piece of code to work properly what piece of code must be placed before it? "Ext.app.Controller"

53. True or False? Sencha Touch lists don't rely on being bound to stores of model instances.

54. What two ways can an event component be added?

55. The Ext.device.Geolocation provides Sencha applications with information about latitude, longitude, ____, speed, _____.

56. True or False? Sencha.io will not automatically preserve aspect ratio.

57. Stores have which of the following relations to data-bound components?

58. True or False? In the Drawing and Charting package, you need to load the Charting package to create a drawing surface.