An application calls a Web method asynchronously by using the following code.

(Line numbers are included for reference only.)
01 void ProcessData() {
02 ProcessingService serviceProxy = new ProcessingService();
03 IAsyncResult asyncResult = null;
04 asyncResult = serviceProxy.BeginProcess(data, null, null);
05 while (!asyncResult.IsCompleted) {
06 Thread.Sleep(1000);
07 }
08
09 serviceProxy.EndProcess(asyncResult);
10 }
You need to ensure that the application can process and log any exceptions raised by the Web method.

What should you do?

You write a .NET Framework remoting application that broadcasts messages to client computers through a central server by raising events on the client computers.
Message details are contained in an argument in the event delegate, as shown in the following code segment.

public delegate void MessageArrivedHandler(BroadcastEventArgs args);

public class BroadcastEventArgs
{
public string Message;
public string Sender;
public DateTime TimeSent;
}

You need to ensure that the client computer can access the message details contained in the event argument.
Your solution cannot change the common language runtime (CLR) security restrictions.

What should you do?

A .NET Framework remoting server hosts a class library that contains the following class.

public class SimpleMathClass : MarshalByRefObject
{
public int LogData(DataRow dr)
{
//Lengthy database calls …
}
}

Users of a Windows-based client application report that the application often becomes nonresponsive.
You discover that the application makes calls to the LogData method that take several seconds to return.
The return value is required to generate reports in the client application.
You need to ensure that calls to the LogData method can be processed without making the client application nonresponsive.

What should you do?