Your network contains an Active Directory domain named contoso.com.
You install Windows Server 2012 R2 on a new server named Server1 and you join Server1 to the domain.
You need to ensure that you can view processor usage and memory usage information in Server Manager.
What should you do?

A.
From Server Manager, click Configure Performance Alerts.

B.
From Performance Monitor, create a Data Collector Set (DCS).

C.
From Performance Monitor, start the System Performance Data Collector Set (DCS).

D.
From Server Manager, click Start Performance Counters.

Explanation:
You should navigate to the Server Manager snap-in and there click on All Servers, and then Performance Counters. The Performance
Counters, when started can be set to collect and display data regarding processor usage, memory usage, amongst many other
resources like disk- related and security related data, that can be monitored.
http://technet.microsoft.com/en-us/library/bb734903.aspx