Usually we meet some problems which caused by certificate expiration, such as NPS server certificate expires, and then WiFi cannot be connected. Is there a way to monitor those certificates? Of course there is, PowerShell can do anything you want.
Being Exchange administrator you might get in situation where someone points out why Exchange server consuming all available memory on server. So here is explanation for the same. This is normal behavior and it is by design in Exchange 2010. This is designed to give better performance to outlook clients.