You are an Enterprise administrator for contoso.com. The corporate network of the company consists of a single Active Directory forest. All the servers in the forest run Windows Server 2008 and all client computers run Windows Vista.
You have been assigned the task to monitor the performance of the servers of the sales department of the company that consists of 600 Windows Server 2008 servers.
You need to generate alerts when the average processor usage is higher than 90 percent for 20 minutes and automatically adjust the processor monitoring threshold to allow for temporary changes in the workload.
Which of the following options would you choose to accomplish the desired task?

A.
Use Microsoft System Center Configuration Manager (SCCM).

B.
Use Windows System Resource Manager (WSRM).

C.
Use Microsoft Windows Reliability and Performance Monitor.

D.
Use Microsoft System Center Operations Manager (SCOM).

E.
None of the above

Explanation:

To generate alerts when the average processor usage is higher than 90 percent for 20 minutes and automatically adjust the processor monitoring threshold to allow for temporary changes in the workload, you need to Deploy Microsoft System Center Operations Manager (SCOM).
System Center Operations Manager 2007(SCOM 2007) is a new version of Microsoft Operations Manager 2005(MoM). It is the end – to – end service monitoring solution that lets you monitor clients, events, services, applications, network devices rather than just servers. It provides integration with Active Directory for user authentication and agent discovery.
It provides active directory integration, Service Oriented Monitoring, Self-Tuning Threshold, Enhanced Reporting, windows computers monitoring and much more.
http://blogs.technet.com/kevinholman/archive/2008/03/19/self-tuning-thresholds-love-and-hate.aspx