For network admins and network security professionals, one of the most important tools to learn to use is Wireshark (formerly Ethereal), a free and open source network analyzer/packet sniffer ...

This data transfer creates a network for sharing data, and using two electronic resources, thus avoiding having a separate networking facility for each computer. This tutorial will explain how to link ...

Data communication basics, Telephone, cellular, cable and computer networks, Layered network architectures, models, and protocols, Switching, routing, flow control, and congestion control, Medium ...