Data Encapsulation Explained

Data encapsulation is the process that takes place when one host on a network needs to send data to another host. As data is prepared for transit, it flows down through each layer of the OSI model. At each layer, extra control information is added to the data before...

Understanding The OSI Model

The Open Systems Interconnection model (OSI model) is a seven-layer abstraction model created in 1984 by the International Organization for Standardization (ISO) to help vendors create compatible and interoperable networks.  The OSI model is a layered model that...

Standards Bodies

It is important to realize that interoperability between devices and systems of various vendors is only possible when a previously agreed upon set of standards is used.  In the field of networking, it is useful to know a handful of these standards bodies that...

Network Topologies

A network’s topology refers to both the physical and logical structure of the network.  The physical topology describes the layout of the network’s physical channel whether it is copper, fiber, or air waves.  The logical topology describes the way in which...

LANs and WANs Explained

Computer networks were created the day someone got tired of walking up and down the office halls to exchange floppy disks.  This archaic method of information sharing is sometimes referred to as “sneakernet”.  Today, that same information can literally be...
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