A computer network allows computers to exchange data, devices (PCs/Computers, printers etc) exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media. The concept of a network is pretty simple. A couple of devices have some medium strung between them, and send data back and forth using electrical signals over that medium (air, light or cable).
This tutorial focuses on the media and connectors used in today's networks. In addition to media and connectors, this tutorial identifies the characteristics of the IEEE 802.3 standard and its variants.
This tutorial reviews general network considerations such as the various topologies used on today's networks, LANs, PANs, and WANs, and the IEEE standards.
This tutorial looks at a number of operating systems that are widely used in today's network environments.
In this tutorial, we will examine how security measures such as port blocking, password policies, and encryptionfit into network security strategy. We also take a quick look at the purpose and characteristics of extranets and intranets.
This tutorial introduces commonly used networking devices, and, although it is true that you are not likely to encounter all of the devices mentioned in this tutorial on the exams of MCSE & Network+, you can be assured of working with at least some of them.
This tutorial looks at the OSI model and describes how it relates to real-world networking. It also examines how common network devices relate to the OSI model.
This tutorial deals with the individual protocols within the protocol suite. The tutorial looks at the function of the individual protocols and their purposes.
This tutorial identifies the tools that are used in the troubleshooting process and identifies scenarios in which these tools can be used.
This tutorials focuses on all areas of troubleshooting, including troubleshooting best practices and some of the tools and utilities you'll use to assist in the troubleshooting process.
Fault tolerance and disaster recovery are such an important part of network administration. In that light, this tutorial is important both in terms of real-world application.
This tutorial examines various WAN technologies and the protocols used to secure and establish the connections.