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Exam : Microsoft 70-340
Title : Implementing Security for Applications with MS Visual C#.NET


1. You are an application developer for your company. You create a serviced component named RecordsAdmin. RecordsAdmin exposes administrative methods for a records management application. The declaration for RecordsAdmin includes the following code segment.
[assembly: ApplicationAccessControl(true)]
[ComponentAccessControl(true),
SecurityRole("Admin")]
public class RecordsAdmin : ServicedComponent {
}
You install RecordsAdmin on a test computer. You use a test application that runs on the test computer under a local computer account named Tester. The Tester account is a member of the Users group and the Debugger Users group. When the test application calls RecordsAdmin, you receive the following error message: "Access is denied."
You want the test application to have access to RecordsAdmin. You want to achieve this goal without granting unnecessary permissions to the Tester account.
What should you do?
A. Add the Tester account to the local Administrators group.
B. Add the Tester account to the Admin role of RecordsAdmin by using the Component Services tool.
C. Add a role named TesterRole to RecordsAdmin. Add the Tester account to the TesterRole role by using the Component Services tool.
D. To the beginning of each method exposed by RecordsAdmin, add the following code segment.
if (ContextUtil.IsCallerInRole("Admin")) {
// Method body here
}
E. To the beginning of each method exposed by RecordsAdmin, add the following code segment.
SecurityCallContext context;
context = SecurityCallContext.CurrentCall;
if (context.IsUserInRole("Admin", "Tester")) {
// Method body here
}
Answer: C

2. You are an application developer for your company. You are developing a forms-based application that reads files that are named by users of the application. The application contains the following method.
bool approveFileName(string fileName) {
string docRoot=@"C:MyAppDocuments";
// Your code goes here... Throw an exception if you meet an error.
return true;
}
Users of the application must not be allowed to access files that are stored in any location other than the C:MyAppDocuments folder.
You need to add code to the method to achieve this goal.
Which code segment or code segments should you use? (Choose all that apply.)
A. fileName=Path.GetFullPath(fileName);
B. fileName=fileName.ToUpper();
C. fileName=fileName.ToLower();
D. docRoot=docRoot.ToLower();
E. fileName=docRoot+fileName;
F. if (!fileName.StartsWith(docRoot))
throw new ApplicationException (
"User asked for file in wrong directory");
Answer: ACDF

3. You are an application developer for your company. You develop an application that uses an external class library. You run the Permissions View tool on the class library and receive the following outpu
Microsoft (R) .NET Framework Permission Request Viewer. Version 1.1.4322.573
Copyright (C) Microsoft Corporation 1998-2002. All rights reserved.
minimal permission set:
<PermissionSet class="System.Security.PermissionSet" version="1">
<IPermission class="System.Security.Permissions.ReflectionPermission,
mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
version="1" Flags="ReflectionEmit"/>
<IPermission class="System.Security.Permissions.SecurityPermission,
mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
version="1" Flags="SerializationFormatter"/>
</PermissionSet>
optional permission set:
<PermissionSet class="System.Security.PermissionSet"
version="1" Unrestricted="true"/>
refused permission set:
Not specified
You need to add corresponding attributes in your application.
Which code segment should you use?
A. [assembly: ReflectionPermission(SecurityAction.RequestRefuse, ReflectionEmit=false)]
[assembly: SecurityPermission(SecurityAction.RequestRefuse,
SerializationFormatter=false)]
[assembly: PermissionSetAttribute(SecurityAction.RequestOptional, Unrestricted=true)]
B. [assembly: ReflectionPermission(SecurityAction.RequestMinimum, ReflectionEmit=false)]
[assembly: SecurityPermission(SecurityAction.RequestRefuse,
SerializationFormatter=false)]
[assembly: PermissionSetAttribute(SecurityAction.RequestRefuse, Unrestricted=true)]
C. [assembly: ReflectionPermission(SecurityAction.RequestMinimum, ReflectionEmit=false)]
[assembly: SecurityPermission(SecurityAction.RequestMinimum,
SerializationFormatter=false)]
[assembly: PermissionSetAttribute(SecurityAction.RequestOptional, Unrestricted=true)]
D. [assembly: ReflectionPermission(SecurityAction.RequestMinimum, ReflectionEmit=true)]
[assembly: SecurityPermission(SecurityAction.RequestMinimum,
SerializationFormatter=true)]
[assembly: PermissionSetAttribute(SecurityAction.RequestOptional, Unrestricted=true)]
Answer: D

4. You are an application developer for your company. You are developing a Windows Forms application. You deploy a supporting assembly named MyAssembly.dll to the global assembly cache. During testing, you discover that the application is prevented from accessing MyAssembly.dll.
You need to ensure that the application can access MyAssembly.dll.
What should you do?
A. Digitally sign the application by using a digital certificate.
B. Run the caspol.exe -s on command from the command line.
C. Run the Assembly Linker to link MyAssembly.dll to the application.
D. Modify the security policy to grant the application the FullTrust permission.
Answer: D

5. You are an application developer for your company. You create a Web application that is used by all users in the company. The application is hosted on the intranet Web server, which is named WebServer. WebServer has IIS 5.0 installed. The Web application is configured to use Integrated Windows authentication. The Web.config file specifies that the authentication mode is set to Windows.
The application connects to a Microsoft SQL Server database named DataStore. The database is located on WebServer. The SQL Server computer is configured with SQL Server logins disabled. The database connection code is shown in the following code segment.
string myConnStr;
myConnStr = @"Initial Catalog=""DataStore"";";
myConnStr = myConnStr + "Data Source=localhost;Integrated Security=SSPI;";
SqlConnection myConn = new SqlConnection(myConnStr);
string myInsert;
myInsert = "INSERT INTO Customer (CustomerID, Name) Values('123', 'John Doe')";
SqlCommand myCmd = new SqlCommand(myInsert);
myCmd.Connection = myConn;
myConn.Open();
myCmd.ExecuteNonQuery();
myCmd.Connection.Close();
When you run the application by using Microsoft Internet Explorer, you receive an error message that reads in part: "Login failed for user WebServerASPNET."
You need to ensure that the application can run successfully without prompting the user for a user name and password.
What should you do?
A. Change the authentication mode in IIS to basic authentication. Update the connection string.
B. Change the authentication mode in IIS to Anonymous and supply a login ID and password for a SQL Server login account that has access to the database. Update the connection string.
C. Enable Integrated Windows authentication in Internet Explorer.
D. Enable impersonation in the Web.config file.
Answer: D

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