DotNet Using C# MCQ Questions Answers

1. Which type guarantee atomic reads and writes?

2. Which is true when comparing ADO.NET with Microsoft DNA (Distributed interNet Applications)?

3. When Implementing System.EnterpriseServices.ServicedComponent derived classes, which statement is true?

4. Which is true about anonymous types?

5. Which statement is applicable to LINQ to SQL?

6. Which is true about Extension method?

7. In which way do structs differ from class?

8. Which is true regarding multiple versions of an assembly?

9. Which characteristics do classes in the System.Drawing namespace such as Brush, Font, Pen, and Icon Share?

10. When using an automatic property, which of the following statements is true?

11. To which contract is the SessionMode property to disallow, require, or permit applied when Windows Communication Foundation is used?

12. Which does using Initializer Syntax with a collection as shown below require? CollectionClass numbers = new CollectionClass{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

13. Which is true regarding event declaration in the code below? class Sample { event MyEventHandlerType MyEvent; }

14. Which item is recommended when using XML comments to generate documentation?

15. Which goals of Windows Communication Foundation?

16. When using an implicitly typed array, which is most appropriate?

17. To which of the following do automatic properties refer?

18. Which is not an unboxing conversion?

19. class Sample { public Sample(int x) { } } In the above code, which of the following other class constructors can directly access the provided constructor?

20. What impact will using implicitly typed local variables as in the following example have? var sample = 'Hello World';

21. The default number of threads per processor in the System.Threading.ThreadPool class under version 3.5 of the Framework is:

22. Which characteristics are found in a query expression?

23. Determining the availability of sufficient memory for an operation can be accomplished by:

24. Which is true about System.Security.Cryptography under version 3.5 of the framework

25. Which are true regarding the System.Collections.Generic.HashSet class?

26. When Deleting a DataRow from the DataRowCollection of a DataTable, you can:

27. Which is true regarding System.Threading.ReaderWriterLockSlim?

28. Which is true about Nullable types?

29. When using a DataReader to access the results of a Database operation, which is true?

30. The framework provides three different timer classes. Select the answer that properly matches the class with the listed characteristic.

31. Which is true about System.GC under version 3.5 of the Framework?

32. Which is statement apply to developing .NET code, using .NET utilities that are available with the SDK or Visual Studio?

33. Which scenarios are applicable to Window Workflow Foundation?

34. Given the code below, which item will cause a compilation error? static void F1(params int [] y) { } static void Sample() { int [] j = new Int32[3]; List k = new List(); // ANSWER GOES HERE }

35. When Windows Communication Foundation is used to develop a Web Service, which are supported?

36. Which is true about using ADO.NET DataSets and DataTables?

37. For which scenarios does Reflection.Emit provide support?

38. Which regarding the System.DateTimeOffset structure are true?

39. Which can System.IO.IsolatedStorage not be scoped?

40. Within Windows Workflow Foundation, Compensating Actions are used for?

41. Which advantages does System.Collections.IDictionaryEnumerator provide over System.Collections.IEnumerator?

42. Which is true about declarative attributes?

43. Which statement do Expression Trees fit best?

44. Which does the System.IO.Pipes namespace provide?

45. Which code samples show a valid static constructaor?

46. Which is static method of the System.Reflection Activator class?

47. When using version 3.5 of the framework in applications which emit a dynamic code, which is true?

48. When using the Demand method of System.Security.IPermissiaon, which will occur?

49. The output generated by the following code will be: string t = 'This Is a Test'; t.Replace('T', '?'); Console.WriteLine(t);

50. Which is characteristics of the System.Threading.Timer class?

51. Which characteristic is present in the DateTime Type?

52. Which features that are not supported in the System.TimeZone class does the System.TimeZoneInfo class provide?

53. Which is true with respect to the standard implementation of Garbage Collection?

54. Which is not supported by remoting object types?

55. Of which elements does Generics allow parameterization by type?

56. Which operator can be overloaded?

57. While using the capabilities supplied by the System.Messaging classes, which is true?

58. In which type of applications can Windows Workflow Foundation be used?

59. Which access limitation is found in a class member declared protected internal?

60. Which is true about C# generics?

61. Which is true regarding System.Web.Mail and System.Net.Mail namespaces?

62. Custom non-fatal exceptions should be derived from?

63. Advantages of Lambda Expressions over Anonymous methods include?

64. Which required to be true by objects which are going to be used as keys in a System.Collections.HashTable?

65. Which can be used to preserve application state information?

66. With which class is the task of mapping a specific point in time into units, such as weeks, months, and years accomplished?

67. Which characteristic is found in overloaded methods?

68. What does the AndAlso operator do?

69. Which are true of the System.Text.StringBuilder class?

70. What does the OrElse operator do?

71. Which mechanisms are not suitable for returning a single row from a DataTable containing a large number of records?

72. Which method calls will compile the following? Private Sub Sample(ByVal number As Integer, Optional ByVal bool As Boolean = True) End Sub

73. Which are valid means of reading all data from a file into a string?

74. What is the value of b3 after the following code is executed? Dim b1 As Boolean? = True Dim b2 As Boolean? = Nothing Dim b3 As Boolean? = IIf(b1 AndAlso b2, b1, b2)

75. Given the following code, which calls will be valid ways to add the elements of a string array to a List(Of String)? Dim values() As String = {'1', '2', '3', '4'} Dim valueList As New List(Of String)

76. Which one will be executed without error? Public Class Fruit End Class Public Class Apple Inherits Fruit End Class

77. What output will be generated by the following code? StringBuilder sb = new StringBuilder(10); sb.AppendFormat('1234567890123'); Console.WriteLine(sb.Capacity);

78. Which one can one perform to create a System.Type instance for a given specialization of a generic?

79. Which one is not an application entry point?

80. Which one is not a valid attribute for impacting serialization?

81. Which properties are found in Static Constructors?

82. Which one can Interface contain?

83. If two assemblies contain the same fully qualified class, which of the following will be true?

84. When developing a managed client to be used with an existing COM Component, __________.

85. The term Encapsulation is most commonly used to mean:

86. Which one does NOT apply to XCOPY deployment?

87. Which characteristic is found in The DateTime type?

88. Which are typical steps in creating a managed COM server component?

89. Which are valid as the underlying type for an enumeration?

90. Which characteristics are found in an iterator?

91. Which one is not a standard service behavior supported by the System.ServiceProcess.ServiceController class members?

92. Which are true for parameters?

93. Which one is NOT a requirement for an application to be certified in the 'Certified for Windows Program'?

94. Which are true when comparing built in types for equality?

95. Transactions initiated in which of the following are supported by System.Transactions infrastructure?

96. Which are true about using the System.Messaging.MessageQueue class?

97. Which one is false regarding arrays?

98. Which are true about event handling?

99. Which encodings are NOT supported by classes in the System.Text namespace?

100. Which conditions are true regarding System.Diagnostics.Trace?