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Microsoft UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev Sample Questions:

1. Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet Information
Services (IIS). No behavior configuration exists in the web.config file.
You need to configure the application so that every service and endpoint limits the number of concurrent
calls to 50 and the number of concurrent sessions to 25.
Which XML segment should you add to the system.serviceModel configuration section of the web.config
file?

A) <behaviors> <serviceBehaviors> <behavior name="*"> <serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
B) <behaviors> <serviceBehaviors> <behavior name="ALL"> <serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
C) <behaviors> <serviceBehaviors> <behavior name="default"> <serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
D) <behaviors> <serviceBehaviors> <behavior name=""> <serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>

2. A Windows Communication Foundation (WCF) service has a callback contract.
You are developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?

A) On the client, use GetCallbackChannel<T>.
B) On the OperationContractAttribute, set the AsyncPattern property value to True.
C) On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
D) On the client, create a proxy derived from DuplexClientBase<TChannel>.

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The
application connects to a Microsoft SQL Server database. The application uses the following object query
to load a product from the database. (Line numbers are included for reference only.)
01using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities())
02{
03ObjectQuery <Product> productQuery = advWorksContext.Product.Where("it.ProductID = 900");
04
05}
You need to log the command that the query executes against the data source. Which code segment
should you insert at line 04?

A) Trace.WriteLine(productQuery.ToTraceString());
B) Trace.WriteLine(productQuery.ToString());
C) Trace.WriteLine(productQuery.CommandText);
D) Trace.WriteLine(((IQueryable)productQuery).Expression);

4. You are designing an ASP.NET Web Forms application that uses a database containing user names and
hashed passwords for authentication. The Web application includes a login form in which users type their
user names and passwords.
You need to design a strategy to ensure that the user's login credentials cannot be stolen through a man-
in-the-middle attack.
Which approach should you recommend?

A) Write an onSubmit JavaScript handler that hashes the password before the password is submitted to the server.
B) Install a certificate on the Web server, and force the login form to use SSL.
C) Write an onSubmit JavaScript handler that URL-encodes the password before the password is passed to the server.
D) Write an OnClick method for the Submit button that hashes the password before the password is compared with the password value that is stored in the database.

5. You create a page in an ASP.NET Web application. The page retrieves and displays data from a Microsoft SQL Server database. You need to create a data source that can connect to the database. What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Use a SqlDataSource control and configure its ConnectionString in the web.config file.
B) Use an ObjectDataSource control and set its TypeName property to System.Data.SqlClient. SqlConnection.
C) Use an XmlDataSource control together with an Xml control that represents the database.
D) Use a LinqDataSource control with entity classes that represent the elements in the database.

Solutions: