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Q31. - (Topic 1) 

You develop a Microsoft .NET Framework 4 application that uses the Entity Framework to store entities in a Microsoft SQLServer2008 database. While the application is disconnected from the database, entities that are added or modified are serialized to a local file. 

The next time the application connects to the database, it retrieves a Customer entity from the database by using an object context named context and stores the entity in a variable named remoteCustomer. The application then deserializes the Customer entity from the local file and stores the entity in a variable named localCustomer. The remoteCustomer and the localCustomer variables have the same entity key. 

You need to ensure that the offline changes to the Customer entity are persisted in the database when the ObjectContext.SaveChanges() method is called. 

Which line of code should you use? 

A. context.ApplyOriginalValues("Customers", remoteCustomer); 

B. context.ApplyOriginalValues("Customers", localCustomer); 

C. context.ApplyCurrentValues("Customers", remoteCustomer); 

D. context.ApplyCurrentValues("Customers", localCustomer); 

Answer: D 

Explanation: 

http://msdn.microsoft.com/en-us/library/dd487246.aspx 


Q32. - (Topic 1) 

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 ADO.NET LINQ to SQL model to retrieve data from the database. 

The application will not modify retrieved data. 

You need to ensure that all the requested data is retrieved. 

You want to achieve this goal using the minimum amount of resources. 

What should you do? 

A. Set DeferredLoadingEnabled to true on the DataContext class. 

B. Set DeferredLoadingEnabled to false on the DataContext class. 

C. Set ObjectTrackingEnabled to true on the DataContext class. 

D. Set ObjectTrackingEnabled to false on the DataContext class. 

Answer: D 

Explanation: 

Setting property ObjectTrackingEnabled to false improves performance at retrieval time, 

because there are fewer items to track. 

DataContext.ObjectTrackingEnabled Property 

(http://msdn.microsoft.com/en-us/library/system.data.linq.datacontext.objecttrackingenabled.aspx) 


Q33. HOTSPOT - (Topic 3) 

You create an Entity Data Model (EDM) named ModelContoso. 

You need to generate a Transact-SQL script to create a database to store ModelContoso. The solution must ensure that table names are prefixed automatically with TBL_. 

Which property of ModelContoso should you modify? (To answer, select the appropriate property in the answer area.) 

Answer: 


Q34. - (Topic 3) 

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. 

You manually create your own Context class named AdventureWorksDB that inherits from Object Context. 

You need to use Adventure WorksDB to invoke a stored procedure that is defined in the data source. 

Which method should you call? 

A. Translate 

B. ExecuteFunction 

C. ExecuteStoreQuery 

D. ExecuteStoreCommand 

Answer: B 


Q35. - (Topic 3) 

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application contains the following XML document. 

< feed > 

< title > Products < /title > 

< entry > 

< title > Entry title 1 < /title > 

< author > Author1 < /title > 

< content > 

< properties > 

< description > some description < /description > 

< n otes > some notes < /notes > 

< comments > some comments < /comments > 

< /properties > 

< /content > 

< /entry > 

... 

< /feed > 

You plan to add localization features to the application. 

You add the following code segment. (Line numbers are included for reference only.) 

01Public Function GetTextNodesForLocalization(doc As XDocument) As IEnumerable(Of XNode) 

03Return From n In nodes _ 

04Where n.NodeType = XmlNodeType.Text _ 

05 Select n 

06End Function 

You need to ensure that the GetTextNodesForLocalization method returns all the XML text nodes of the document. 

Which code segment should you insert at line 02? 

A. Dim nodes As IEnumerable(Of XNode) = doc.Descendants() 

B. Dim nodes As IEnumerable(Of XNode) = doc.Nodes() 

C. Dim nodes As IEnumerable(Of XNode) = doc.DescendantNodes() 

D. Dim nodes As IEnumerable(Of XNode) = doc.NodesAfterSelf() 

Answer: C 

Explanation: 

DescendantNodes() Returns a collection of the descendant nodes for this document or element, in document order. Descendants() Returns a collection of the descendant elements for this document or element, in document order. Nodes() Returns a collection of the child nodes of this element or document, in document order. NodesAfterSelf() Returns a collection of the sibling nodes after this node, in document order. 


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Q36. - (Topic 5) 

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create a Microsoft ASP.NET application. 

The application connects to a Microsoft SQL Server database. The application is hosted on a Web server along with other applications. 

You need to secure the transmission of data between the application and the database. 

You need to achieve this goal without affecting other applications. What should you do? 

A. EnCrypt the connection string 

B. Use encryption to store sensitive data in the database. 

C. Use Secure Sockets Layer (SSL) to establish connections to the database 

D. Use Internet Protocol Security (IPSec) to secure the communication channel. 

Answer: C 

Explanation: 

SSL is an established standard for ensuring secure HTTP transactions. SSL provides a mechanism to perform up to 128-bit encryption on all transactions between the client and server. It enables the client to verify that the server belongs to a trusted entity through the use of server certificates. It also enables the server to confirm the identity of the client with client certificates. Each of these issues— encryption, server identity, and client identity—are negotiated in the SSL handshake that occurs when a client first requests a resource from a Secure Hypertext Transfer Protocol (HTTPS) server. Essentially, the client and server each 

present a list of required and preferred settings. 

If a common set of requirements can be agreed upon and met, an SSL connection is 

established. 

Internet Protocol Security (IPsec) is a set of security protocols used to transfer IP packets 

confidentially across the Internet. 

IPsec is mandatory for all IPv6 implementations and optional for IPv4. 

An IPsec policy is a set of rules that determine which type of IP traffic needs to be secured 

using IPsec and how to secure that traffic. 

Only one IPsec policy is active on a computer at one time. 


Q37. - (Topic 3) 

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to develop an application that uses LINQ to SQL. The application contains the following model. 

Each region contains a single vendor. Customers order parts from the vendor that is located in their region. 

You need to ensure that each row in the Customer table references the appropriate row from the Vendor table. 

Which code segment should you use? 

A. Dim dc As SalesDataContext = New SalesDataContext( "…" ) Dim query = From c In dc.Customers Join v In dc.Vendors On c.Region Equals v.Region Select New With {.Customer = c, -Vendor = v} For Each u In query 

B. Vendor.VendorlD = u.Customer.VendorlD Next dc.SubmitChanges() 

C. Dim dc As SalesDataContext - New SalesDataContext ( "…" ) Dim query = From v In dc.Vendors Join c In dc.Customers On v.Region Equals c.Region 

Select New With {.Vendor = v, -Customer = c> For Each u In query 

D. Customer.VendorID = u.Vendor.VendorID 

Next 

dc.SubmitChanges() 

E. Dim dc As SalesDataContext = New SalesDataContext( "…" ) 

Dim query = From c In dc.Customers 

Join v In dc.Vendors On c.VendorID Equals v.VendorID 

Select New With {.Customer = c, -Vendor = v) 

For Each u In query 

F. Vendor.Region = u.Customer.Region 

Next 

dc.SubmitChanges() 

G. Dim dc As SalesDataContext - New SalesDataContext( "...") 

Dim query = From v In dc.Vendors 

Join c In dc.Customers On v.VendorID Equals c.VendorID Select New With {.Vendor = v, 

.Customer = c} For Each u In query 

H. Customer.Region = u.Vendor.Region 

Next 

dc.SubmitChanges() 

Answer: B 


Q38. - (Topic 1) 

You use Microsoft Visual Studio 2010 and Microsoft NET Framework 4 to create an application. You use the ADONET Entity Data Model (EDM) to define a Customer entity. 

You need to add a new Customer to the data store without setting all the customer’s properties. 

What should you do? 

A. Call the Create method of the Customer object 

B. Call the CreateObject method of the Customer object 

C. Override the Create method for the Customer object 

D. Override the Save Changes method for the Customer object 

Answer: B 

Explanation: 

CreateObject<T> Creates and returns an instance of the requested type. 


Q39. - (Topic 3) 

You use Microsoft Visual Studio 2010 to create a Microsoft .NET Framework 4 application. You create an Entity Data Model for the database tables shown in the following diagram. 

You need to modify the .edmx file so that a many-to-many association can exist between the Address and Customer entities. 

Which storage Model section of the .edmx file should you include? 

A. <EntityType Name="CustomerAddress"> 

<Key> 

<PropertyRef Naroe="CustomerID" /> 

<PropertyRef Naroe="AddcessID" /> 

</Key> 

<Property Name-"CustomerID" Type-"int" Nulloble-"false"/> 

<Pcopercy Naroe-"AddcessID" Type-"int" Nullable-"false"/> 

<Pcopercy Name="AddcessType" Type="nvacchar" Nullable="false" MaxLength="50" /> </EntityType> 

B. <EntityType Naitie="CustoitierAddress"> 

<Key> 

<PropertyRef Nartie="CustomerID" /> 

<PropertyRef Name="AddressID" /> 

</Key> 

<Property Name="CustomerID" Type="int" Nullable="false"/> 

<Property Name="AddressID" Type="int" Nullable="false"/> 

<Property Name="AddressType" Type="nvarchar" 

Nullable="false" MaxLength="50" DefaultValue="Home" /> 

</EntityType> 

C. <EntityType Name="CustomerAddress"> 

<Key> 

<PropertyRef Name="CustomerAddressID" /> 

</Key><Property Name="CustomerAddressID" Type="int" 

Nullable="false" StoreGeneratedPattern="Identity" /> 

<Property Name="CustomerID" Type="int" Nullatile="false"/> 

<Property Name="AddressID" Type="int" Nullable-"falsew”/> 

<Property Name="AddressType" Type="nvarchar" 

Nullable="false" MaxLength."50"/> 

</EntityType> 

D. <EntityType Name="CustomerAddress"> 

<Key> 

<PropertyRef Name="CustomerAddressID" /> 

<PropertyRef Name="CustomerID" /> 

<PropertyRef Name="AddressID" /> 

</Key> 

<Property Name="CustomerAddressID" Type="int" 

Nullafole="false" StoreGeneratedPattern="Identity" /> 

<Property Name="CustomerID" Type="int" Nullable="false"/> 

<Property Name="AddressID" Type="int" Nullable="false"/> 

<Property Name="AddressType" Type="nvarchar" 

Nullable="false" MaxLength="50'7> 

</EntityType> 

Answer: A 


Q40. - (Topic 3) 

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to develop an application that connects to a Microsoft SQL Server 2008 database. The application includes a SqlConnection named conn and a SqlCommand named cmd. 

You need to create a transaction so that database changes will be reverted in the event that an exception is thrown. 

Which code segment should you use? 

A. Dim transaction = conn.BeginTransaction() cmd.Transaction = transaction Try … transaction.Commit() Catch transaction.Rollback() End Try 

B. Dim transaction = conn.BeginTransaction() cmd.Transaction = transaction Try … transaction.Commit() Catch transaction.Dispose() End Try 

C. Dim transaction = conn.BeginTransaction() cmd.Transaction = transaction Try … Catch transaction.Commit() End Try 

D. Dim transaction = conn.BeginTransaction() cmd.Transaction = transaction Try … transaction.Rollback() Catch transaction.Dispose() End Try 

Answer: A 



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