IPv4 subnetting sits at the top of the list of challenges for #CCNA. I’m wrapping up the development of a new subnetting course, and as a result, I’ve been thinking a lot about how people learn [...]

First, think of TCP headers, and the source port and destination port. Then think about the predictable port – the well-known port – and whether it will be the source or destination port. Then [...]

#CCNA ACL questions can uncover your weaknesses even without a detailed and complicated list of requirements to place in a single ACL. In fact, my “Acing the CCNA Exam” live course on Safari [...]