You are a database administrator for your company. The company runs a popular database-driven Web site against a SQL Server 2005 computer named SQL2. You need to ensure a quick response time and appropriate audit trail in the event that SQL2 experiences excessive traffic due to denial-of-service （DoS） attacks. Which two actions should you perform？（）

A. Create a new performance alert to monitor the Current Bandwidth counter.
B. Create a new performance alert to monitor the Bytes Total/sec counter.
Configure the new performance alert to start a SQL Server Profiler trace.
D. Configure the new performance alert to start a Network Monitor capture.