Example for structured exception handling public

Example for Structured Exception Handling
Public Function Structeddivide(ByVal a As Integer, ByVal b As Integer) As Integer
Try
Return a / b
Catch ex As OverflowException
MsgBox("Cannot divide by zero")
Return -1
Finally
MsgBox("Calculation over")
End Try
End Function
New exception from SqlDataReader. In the System.Data.SqlClient namespace, you construct a
SqlDataReader
with code similar to this:
Dim myCommand As New SqlCommand(mySelectQuery, myConnection)
myConnection.Open()
Dim myReader As SqlDataReader
myReader = myCommand.ExecuteReader()
In 1.0 this code would succeed, even if the command was chosen as the deadlock victim by SQL
Server (in the case where there's a locking issue with another connection, of course). You
wouldn't get a SqlException back until you actually tried to read data from the SqlDataReader. In
1.1 the ExecuteReader() method can now throw
a SqlException. If you've got error handling that depends on only seeing this particular exception
when you're actually reading data, you'll need to revise the code to move up.
Question: 35
You are an application developer for your company, which is named Contoso, Ltd. You are
developing an application that stores configuration data in a file named
C:\Contoso\Persistence.config. This file is the only file your application will access.
The design document for the application specifies the following two requirements:
All authenticated users are allowed to view the contents of the configuration data file.
Only members of a group named Managers are allowed to modify the data in the configuration
data file.
You need to ensure that the file can be accessed according to these requirements.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)
A. Apply a discretionary access control list (DACL) entry on the file. Use the DACL to grant Read
permission to all authenticated users, and to grant Write permission to the Managers group.
B. Apply a discretionary access control list (DACL) entry on the file. Use the DACL to grant Read
permission to the Everyone group, and to grant Write permission to the Managers group.
C. Add the following code segment to the application before accessing the file. Dim Wp As New
WindowsPrincipal(WindowsIdentity.GetCurrent())Dim Manager As BooleanManager =
Wp.IsInRole("Managers")Dim Fp As FileIOPermissionDim ConfigFile As StringConfigFile =
"C:\Contoso\Persistence.config"If Manager Then Fp = New
FileIOPermission(FileIOPermissionAccess.AllAccess, ConfigFile)Else Fp = New
FileIOPermission(FileIOPermissionAccess.Read, ConfigFile)End IfFp.PermitOnly()
D. Add the following code segment to the application before accessing the file. Dim Wp As New

Exam Name: Implementing Security for Applications with Microsoft Visual Basic .NET
Exam Type: Microsoft
Exam Code: 70-330 Total Questions: 85
Page 49 of 129
WindowsPrincipal(WindowsIdentity.GetCurrent())If Wp.IsInRole("Managers") Then Dim Anon
As WindowsIdentity Anon = WindowsIdentity.GetAnonymous() Anon.Impersonate()End If
E. Require users to enter a password that is shared among members of the Managers group