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

1. You are developing an application to update a user's social status. You need to consume the service using
Windows Communication Foundation (WCF).
The client configuration is as follows.
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="SocialConfig">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic"
?realm="Social API" />
</security>
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address="http://contoso.com"
binding="webHttpBinding"
bindingConfiguration="SocialConfig"
contract="ISocialStatus"
name="SocialClient" />
</client> </system.serviceModel> The service contract is defined as follows. [ServiceContract] public interface ISocialStatus {
[OperationContract]
[WebInvoke(UriTemplate =
"/statuses/update.xml?status={text}")]
void UpdateStatus(string text); } Which code segment should you use to update the social status?

A) using (ChannelFactory<ISocialStatus> factory =
new WebChannelFactory<ISocialStatus>(typeof(ISocialStatus)))
{
factory.Credentials.UserName.UserName = user.Name;
factory.Credentials.UserName.Password = user.Password;
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
B) using (WebChannelFactory<ISocialStatus> factory = new WebChannelFactory<ISocialStatus>(typeof(ISocialClient))) { factory.Credentials.Windows.ClientCredential.UserName = user.Name; factory.Credentials.Windows.ClientCredential.SecurePassword. SetAt(0, Convert.ToChar(user.Password)); ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
C) using (ChannelFactory<ISocialStatus> factory = new ChannelFactory<ISocialStatus>("POST")) { factory.Credentials.Windows.ClientCredential.UserName = user.Name; factory.Credentials.Windows.ClientCredential.SecurePassword. SetAt(0, Convert.ToChar(user.Password)); ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
D) using (WebChannelFactory<ISocialStatus> factory = new WebChannelFactory<ISocialStatus>("SocialClient"))
{
factory.Credentials.UserName.UserName = user.Name;
factory.Credentials.UserName.Password = user.Password;
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}

2. You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding. New
audit requirements dictate that callers must be authenticated on every call to ensure that their credentials
have not been revoked.
You need to ensure that the service will not cache the security request token.
What should you do?

A) In the message security configuration, change clientCredentialType from IssuedToken to UserName.
B) Apply a ServiceBehavior attribute to the service implementation class with the InstanceContextMode property set to Single.
C) In the message security configuration, set establishSecurityContext to false.
D) At the end of every operation, call the SessionStateUtility.RaiseSessionEnd method.

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You are
creating the data layer of the application. You write the following code segment. (Line numbers are included
for reference only.)
01 public static SqlDataReader GetDataReader(string sql){
02 SqlDataReader dr;
03
04 return dr;
05 }
You need to ensure that the following requirements are met:
*The SqlDataReader returned by the GetDataReader method can be used to retrieve rows from the
database.
*SQL connections opened within the GetDataReader method will close when the SqlDataReader is closed.
Which code segment should you insert at line 03?

A) SqlConnection cnn=new SqlConnection(strCnn); SqlCommand cmd =new SqlCommand(sql, cnn); cnn.Open(); try {
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch {
cnn.Close();
throw;
}
B) SqlConnection cnn=new SqlConnection(strCnn); SqlCommand cmd =new SqlCommand(sql, cnn); cnn.Open(); try {
dr = cmd.ExecuteReader();
cnn.Close();
}
catch {
throw;
}
C) using (SqlConnection cnn=new SqlConnection(strCnn)){
try {
SqlCommand cmd =new SqlCommand(sql, cnn);
cnn.Open();
dr = cmd.ExecuteReader();
}
catch {
throw;
}
}
D) SqlConnection cnn=new SqlConnection(strCnn); SqlCommand cmd =new SqlCommand(sql, cnn); cnn.Open(); try {
dr = cmd.ExecuteReader();
}
finally {
cnn.Close();
}

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to manage customer and related order records. You add a new order for an existing customer. You need to associate the Order entity with the Customer entity. What should you do?

A) Use the Attach method of the ObjectContext to add both Order and Customer entities.
B) Call the Add method on the EntityCollection of the Order entity.
C) Set the Value property of the EntityReference of the Order entity.
D) Use the AddObject method of the ObjectContext to add both Order and Customer entities.

5. You use Microsoft Visual Studio 2010, Microsoft Sync Framework, and Microsoft .NET Framework 4 to
create an application. You have a ServerSyncProvider connected to a Microsoft SQL Server database. The
database is hosted on a Web server. Users will use the Internet to access the Customer database through
the ServerSyncProvider. You write the following code segment. (Line numbers are included for reference
only.)
01SyncTable customerSyncTable = new SyncTable("Customer");
02customerSyncTable.CreationOption = TableCreationOption. UploadExistingOrCreateNewTable;
03
04customerSyncTable.SyncGroup = customerSyncGroup;
05 this.Configuration.SyncTables.Add(customerSyncTable);
You need to ensure that the application meets the following requirements: "Users can modify data locally
and receive changes from the server. "Only changed rows are transferred during synchronization. Which
code segment should you insert at line 03?

A) customerSyncTable.SyncDirection = SyncDirection.DownloadOnly;
B) customerSyncTable.SyncDirection = SyncDirection.UploadOnly;
C) customerSyncTable.SyncDirection = SyncDirection.Snapshot;
D) customerSyncTable.SyncDirection = SyncDirection.Bidirectional;

Solutions: