Cisco CCNP / BCMSN Exam Tutorial: The Core Layer Of Cisco’s Three-Layer Model

In this section, you’re going to be reintroduced to a networking model you first saw in your CCNA studies. No, it’s not the OSI model or the TCP/IP model – it’s the Cisco Three-Layer Hierarchical Model. Let’s face it, just about all you had to do for the CCNA was memorize the three layers and […]