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1. Correct Answers: A, B, C, and D A. Correct: Using the OneWay attribute can definitely result in notifications being sent to clients that no longer exist, because no exception notification would be raised. B. Correct: Any EventArgs classes must be serializable. C. Correct: Because each client must register for events, each additional client adds overhead to the application. This overhead can severely limit scalability. D. Correct: Because of the problems associated with events, they are often best suited to applications running on the same machine because running the client and server on the same machine avoids many of the problems related to events.

1. 2. 3. 4. 5. 6.

1. .NET remoting and Web services can handle these problems. Because of the needs of this application, configurability and maximum performance, .NET remoting is the best choice. 2. .NET remoting allows clients to consume new application servers by simply changing a configuration file. No new libraries need to be distributed. Moreover, by using interfaces, hard-coded library references don t need to be distributed either. This arrangement makes changing servers and logic simple.

' VB ' Create a new DataColumn and set its name and data type. Dim TotalPriceColumn As New DataColumn("TotalPrice", GetType(System.Double)) ' Set the column's Expression property to the desired expression,

Do you know what these key terms mean You can check your answers by looking up the terms in the glossary at the end of the book.

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Follow the instructions in the SQL Server Books Online article How to: Enable FILESTREAM at http://msdn.microsoft.com/en-us/library/cc645923.aspx. Insert the companion CD into your CD-ROM drive. Browse to the \Databases folder and then to the directory of your choice. Copy the Northwind.mdf and Northwind.ldf files to C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA. Copy the AdventureWorksDW2008_Data.mdf and AdventureWorksDW2008_Log.ldf files to C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA. Copy the AdventureWorks2008_Data.mdf and AdventureWorks2008_Log.ldf files with the entire Documents folder to C:\Program Files\Microsoft SQL Server\ MSSQL10.MSSQLSERVER\MSSQL\DATA. In SQL Server Management Studio connect to your SQL Server instance in an Object Explorer window. Right-click the Databases node and select Attach. Click Add, select AdventureWorks2008_Data.mdf, and click OK. Click Add, select AdventureWorksDW2008_Data.mdf, and click OK.

In the following case scenarios, you apply what you ve learned about how to debug and deploy remote objects. You can find answers to these questions in the Answers section at the end of this book.

TotalPriceColumn.Expression = ("UnitPrice * Quantity")

You are the chief software architect for the AdventureWorks organization. AdventureWorks is in the business of selling outdoor gear and sporting equipment globally. You have created a distributed order tracking system that is used across AdventureWorks so that all orders are entered directly into a central database. Your order tracking sys tem utilizes remote objects to serve as its business and data components. The client base and order demand at AdventureWorks have been growing exponentially and you need to ensure that there are enough servers hosting your remote objects to sup port loads being placed on the objects as orders are placed.

7. 8. 9. 10.

To accurately gauge the resources needed to support order loads, you must answer the following questions: 1. How can you track how many instances of your remote objects are being created and which methods are being called most often 2. How can you ensure that order loads are being balanced across your remote objects as efficiently as possible

11. 12.

You are the chief software architect for the Baldwin Museum of Science. You are cre ating a remote object that will allow other partner museums to search your inventory of exhibits. You have new museums partnering with your museum on a continual basis. New partners will need to be able to search your inventory. You are hosting the remote objects using IIS and have implemented authentication for each partner.

NorthwindDataSet.Order_Details.Columns.Add(TotalPriceColumn)

When creating the enterprise architecture for the museum, you need to answer the fol lowing question so that others can maintain the application you are creating in the future.

Click Add, select Northwind.mdf, and click OK. Click OK. Verify that you have the AdventureWorks2008, AdventureWorksDW2008, and Northwind databases attached to your instance.

How can you simplify the deployment of your remote objects to trusted partner museums in the future

// C# // Create a new DataColumn and set its name and data type. DataColumn TotalPriceColumn = new DataColumn

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