Back when I worked in the Network Operations department at one of my previous jobs, we used to chuckle when a customer would call us reporting that “the Internet is down.” Now, I realize that there ...

In many ways, the art of networking today is quite different from when I entered the field about 17 years ago as a part-time student assistant in the networking group at the university where I was ...

Figure 1. Link and activity lights can tell you a lot about the connection between two network devices. All network architectures rely upon a physical (or RF) connection between devices.