You use Microsoft .NET Framework 4.0 to develop an ASP.NET Web application that connects to a Microsoft SQL Server 2008 database.
The application uses Integrated Windows authentication in Internet Information Services (IIS) to authenticate users.
A connection string named connString defines a connection to the database by using integrated security.

You need to ensure that a SqlCommand executes under the application pool’s identity on the database server.
Which code segment should you use?

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server 2008 database.
You use the ADO.NET Entity Framework Designer to model entities. You add the following stored procedure to the database, and you add a function import to the model.

CREATE PROCEDURE [dbo].[InsertDepartment]
@Name nvarchar(50),
@ID int NULL OUTPUT
AS
INSERT INTO Department (Name) VALUES (@Name)
SELECT @ID = SCOPE_IDENTITY()

You need to insert a new department and display the generated ID. Which code segment should you use?

You use Microsoft .NET Framework 4.0 to develop an application that exposes a WCF Data Services endpoint.
The endpoint uses an authentication scheme that requires an HTTP request that has the following header format.

GET /OData.svc/Products(1)
Authorization: WRAP access_token “123456789”

You add the following method to your DataService implementation.

01 protected override void OnStartProcessingRequest(ProcessRequestArgs args)
02 {
03 ….
04 }

You need to ensure that the method retrieves the authentication token. Which line of code should you use?