One particularly useful feature of Windows Server 2012 is its native support for NIC teaming (a form of link aggregation). Also known as load balancing and failover (LBFO), NIC teaming involves establishing parallel network connections using multiple network adaptors. This increases both throughput and redundancy, so you can have a faster network with more uptime. While you can do NIC teaming with earlier Windows Server versions, native support is important because it allows you to reliably team together NICs from multiple vendors.
As an administrator, one of the most valuable skills you can develop is the ability to analyze and optimize each server’s performance. Windows Server 2003 includes an excellent utility for analyzing your server’s performance: System Monitor. You’ll find System Monitor invaluable for determining exactly what’s going on inside a server. You can even schedule it to run at regular intervals to hopefully head off problems before they arise.
If you are a Windows Server administrator, one of the critical jobs you usually do is manage the server, especially File Servers.
Microsoft certifications represent a rich and varied spectrum of job roles and responsibilities. Earning a specific credential provides objective validation of the ability to successfully perform critical IT functions. Microsoft Certification distinguishes individuals with technical expertise and proves their ability to design and build innovative solutions across multiple technologies, both on-premise and in the cloud.
Microsoft's Born to Learn website has released roadmap graphics detailing the pathways to Microsoft Certification.
(Windows 2000 Server/Server 2003)