Simple Web Service using WCF (Windows Communication Framework)

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
	<system.serviceModel>
		<services>
      <service name="WCFSample.EchoImplementation" behaviorConfiguration="returnFaults">
				<endpoint contract="WCFSample.IEchoContract" binding="basicHttpBinding"/>
				<endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex"></endpoint>
			</service>
		</services>
		<behaviors>
			<serviceBehaviors>
				<behavior name="returnFaults">
					<serviceDebug includeExceptionDetailInFaults="true"/>
					<serviceMetadata httpGetEnabled="true"></serviceMetadata>
				</behavior>
			</serviceBehaviors>
		</behaviors>
	</system.serviceModel>
	<system.web>
		<compilation debug="true">
			<assemblies>
				<add assembly="System.Security, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="Microsoft.Transactions.Bridge, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="SMDiagnostics, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.IdentityModel.Selectors, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.DirectoryServices, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="System.Web.RegularExpressions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
				<add assembly="System.Messaging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="System.ServiceProcess, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
  </assemblies>
		</compilation>
		<identity impersonate="false"/>
	</system.web>
	<system.diagnostics>
	</system.diagnostics>
	<system.webServer>
		<directoryBrowse enabled="true"/>
		<validation validateIntegratedModeConfiguration="false"/>
	</system.webServer>
</configuration>