Whether it’s wired or wireless, most data communications today happens by way of packets of information travelling over one or more networks. But before these networks can work together, though, they ...

Ever wondered what happens behind the scenes when you type a URL into your browser? Well, I did too—and decided to dive deep into the world of networking protocols, packet transmissions, and layered ...

A reference model is a virtual model which defines how communication should take place. It logically divides the processes which are required for the communication into layers. This concept is known ...

The TCP/IP (Transmission Control Protocol/Internet Protocol) model and the OSI (Open Systems Interconnection) model are conceptual frameworks used to describe how data is transmitted over a network.

Have you ever performed surgery on data packets? There are times when that may be the best way to troubleshoot and optimize your network. This edition of the Packet Professor will get you started in ...

IBM misplayed its hand with SNA and OSI never had a chance against TCP/IP. The long, slow and at times, colorful battle between TCP/IP backers and SNA stalwarts was one of the more acrimonious periods ...