The OSI model defines protocols for how a network technically handles communications at the various functional layers. Starting with electrons and photons at the physical layer (Layer 1), the ...

When reading technical information or preparing for a network-analysis effort, it helps to have certain issues and concepts in mind. These items serve that purpose regarding TCP/IP and the OSI Model: ...

The third layer of the OSI Model, the network layer, is where most network engineers focus their time and expertise. As Darragh commented in my post on the data link layer, Layer 2 is cool but Layer 3 ...

The Internet Protocol layer is comparable to layer 3 in the OSI model. The host-to-host layer is equivalent to OSI layer 4. These are the TCP and UDP (user datagram protocol) functions.

This is a good example of de-cerebralisation in action. The 4-7 layer band in the OSI 7-layer network model covers some important tasks, such as load-balancing.