Networking is a complex but essential area of study for system administrators. This Learning Path covers the ways users can connect to a network; the concepts of switching, routing, and internetworking; end-to-end protocols; end-to-end data; network security; and everything else you need to know to keep a network functioning smoothly.
Virtualization is central to modern communications. From cloud services to internal compute clusters, virtual machines and hypervisors play an ever growing role in client-server communications and in design discussions. But virtualization is not limited to servers. Virtual private networking, virtual circuit and logical topologies have used many to one ratios to describe the relationship between logical connections running over physical pathways. In addition, a virtual environment such as that seen in a data center is not isolated. A significant amount of connectivity and configuration is necessary to allow virtual nodes to exchange data with physical entities.