VB.NET MCQ Questions Answers

1. A difference between a listbox and a drop-down combobox is _________.

2. .NET Framework programs are compiled into a CPU independent instruction set named

3. Which class is not associated with System.IO?

4. Which Visual Studio project is not available in the 'New Project' dialog box?

5. How many bits does the int datatype use in .NET?

6. Which keyword does not work with methods?

7. Which is correct with regard to a CommandBuilder object?

8. What is the value range of the Boolean data type?

9. In .NET framework, reflection is used to

10. What is the nominal storage allocation for the Byte data type?

11. Which is true for the 'instance' methods?

12. Delay signing allows a shared assembly to be signed with

13. You passed an array as an argument to the following function: Public Function Modify(ByVal ar[] as Integer) as Boolean What will happen to the original value of the array (ar), if the function modified the values?

14. You declared an object variable named 'obj'. How will you check if it is initialized or not?

15. Which one should you use to serialize instances of a class?

16. What is the value range of the SByte data type?

17. You have to update some values in the database. Which method will you execute on a command object named 'cmdUpdate'?

18. In which file can you define the 'Process Model' attribute?

19. Which of the following is true for overriding?

20. You have placed an OpenFileDialog control to let users select image files. How will you set the filter to display image files only? The name of the control is 'ofdImage'.

21. Which file is used for debugging an application?

22. Which is not correct about DataReader?

23. Which manages the code during execution?

24. With VB.Net, controls can be created at run time. The statement that can be used to add events to such runtime controls is

25. What does Managed Data refer to?

26. What's the output? Dim employeeDS As DataSet employeeDS.Tables.Add(new DataTable('FirstQTR'))

27. Which is true about MSIL code?  

28. You have a table named 'FirstQTR' and want to create another table named 'SecondQTR' which is exactly the same as 'FirstQTR', including DataTable schema and constraints. Which of the following methods will fulfill this requirement?

29. Which namespace contains the DataSet class?

30. You have written a simple function to multiply two integers: Line 1 Public Function multiply(ByVal a As Int32, Line 2 ByVal b As Int32) As Int32 Line 3 return (a * b) Line 4 End Function What will happen on running the program?

31. Which tools can be used to modify and grant permissions to code groups?

32. Which option represents the possible values for the 'DataRowVersion' class?

33. In .NET generics, the type parameter

34. Which is not correct with regard to shared assembly?

35. Which transport protocol is used to call a Web Service?

36. A programmer wrote a small function to return the sum of two bytes: Public Function add(ByVal b1 As Byte, ByVal b2 As Byte) As Byte Return b1 + b2 End Function What will happen when add(200, 80) is called by the program?

37. On a user form, to catch the user key strokes in the key press event of a text box, you would use

38. The global assembly cache

39. You have an array list named 'alCustomer' containing 200 items. The array list is sorted, and you want to copy customers 21 to 50 from this list to a new array list named 'alSpecial'. Which methods will you use?

40. Which helps assemblies become self describing?

41. Which is not a feature of .NET 2.0?

42. Which type of inheritance is not supported by .Net?

43. Which is not correct with regard to DataReader and DataSet?

44. What kind of object is a string considered to be?

45. You have created a SQlCommand object using 'con' as an open connection object: Dim cmd as New SqlCommand('Select CategoryID, CategoryName FROM Categories', con) Which method will you use to run the query?

46. A DataSet

47. Which is correct with regard to Windows process memory allocation?

48. A hashtable is serialized by using

49. Asynchronous execution is supported in ADO.NET 2.0 for ExecuteReader, ExecuteScalar, and ExecuteNonQuery.

50. Dot Net Framework consists of

51. Which one is used as a Serializer for the web services?

52. Which tool assists in Assembly Signing?

53. Which is correct with regard to .NET framework managed web pages?

54. Two functions are defined with the same name in a class: IsGreater(no1 as Integer, no2 as Integer) as Boolean IsGreater(st1 as String, st2 as String) as Boolean Which of the following concepts is demonstrated here?

55. The .NET framework comes with a  few CLR hosts. Which of the following is a CLR host?

56. You assigned the version number - 5.3.1.0 to your assembly.The four digits stand for

57. Which method of the FormsAuthentication class is used to read user ids and passwords from the web.config file  automatically

58. Where is the shared assembly generally stored?

59. .... is self-describing code.

60. A class contains an overridable method 'getBalance(utype as Integer)'. Its derived class also has the same method, but with a different implementation. How can the parent and child classes refer to their own methods explicitly?

61. The code written to target common language runtime services is called

62. For MSIL code to be executed in a PE file, it is necessary to have

63. While working with collections, sometimes it is necessary to persist objects. Which method will be suitable to store a HashTable named 'hash' to a file Stream named 'fileStr' using a BinaryFormatter named 'BF'?

64. The .... namespace is not defined in the base class library

65. Which is useful for searching within a list box?

66. Consider the following definition of an overloaded function: Public Overloads Function Join(ByVal st As String, ByVal no As Integer) As Double Which does not represent a valid overloaded method with respect to the above declaration?

67. Which is true for 'shadowing' a function belonging to the parent class?

68. In a list box control, the property named 'SelectionMode' controls the selection of the items. Which of the following is not correct for the 'SelectionMode' property?

69. Which datatypes are new in Visual Basic .Net?

70. Which method is not provided with a 'RichTextBox' class?

71. You designed a user login screen for a new management system written in VB.Net. What should be the signatures of the Login button's click event, if the button name is 'bLogin'?

72. What is the syntax to create a SQL connection in VB.Net?

73. Which is not used for searching for an item within an array?

74. .NET framework has data providers for

75. You have defined a SQL command object named 'sqlComm' to run a stored procedure. The OUT parameter is as follows: Dim pm2 As New SqlParameter('@Amount', SqlDbType.Money) How will you add the OUT parameter named pm2 to the command object?

76. A __________ assembly can be used to deploy language-specific resources for an application.

77. You want to scroll through all the controls in a form and validate the text boxes. How will you check if the control is a text box or not?

78. The following array declaration is valid: Dim X(-1) As Integer.

79. A public method declared inside of a public module is accessible from another assembly.

80. What is the value of DateTime.MinValue.Year?

81. In order to allow assembly (a) to see methods declared as friend in assembly (b), what attribute can you use?

82. Tuples are value types as opposed to reference types.

83. When both a parent class and a derived class have both a shared and an instance CTOR, in what order do they fire when creating an instance of the derived class like this: Dim MyObject as New DerivedClass?

84. In order to allow multiple WCF services to listen on the same port, you must set which property of the binding class to true?

85. Assuming s is a String and i is an Integer, what data type does the following method call return: Int32.TryParse(s, i)

86. Extension methods may only be declared inside of:

87. Value of b after execution? Dim b As Boolean = Nothing

88. How many times can a class inherit from different parent classes?

89. Which is a valid declaration for a nullable integer type?

90. If no access modifier is specified for a class, it is considered _______?

91. The following variable: Dim product = New With {Key .Name = 'paperclips', .Price = 1.29}, is referred to as:

92. Which keyword refers the parent of the current object

93. What is the difference between Or and OrElse?

94. What method of the Thread class would you call to force multiple threads to complete before moving on to the next section of code?

95. Which control would you employ to present a yes/no value to an end user?

96. Do reference types or value types have their value stored on the stack?

97. The correct syntax for the event that is fired when the mouse pointer rests on a TextBox control is

98. Which is not a binding associated with WCF services?

99. Which is the most valid example of the My object in Visual Basic?

100. COMException class can be found in