For both CCENT and CCNA level questions, you need to know a handful of key facts if you want to predict the values of MAC addresses, IP addresses, and TCP/UPP port numbers of a packet. Today I’ll ...

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 ...