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 think about the syntax of the
#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 features ACL Port Matching as one of
I’m teaching again! Yep. I taught a lot back in the 1990s – week-long classes for 35 weeks a year for a couple of years even. I love teaching, but I’ve not done as much of it as late, focusing
This latest #CCNA / #CCENT question uses a specific scenario: a working ping, a clearing of a switch MAC address table, and a repeat of the ping. The scenario hopes to make stretch a bit and think outside the box.
#CCNA candidates learn about ARP early in the ICND1 half of their studies, and it takes just a few minutes to learn the basics. At the same time, people who write CCNA exam questions can ask us about ARP in
Of all #CCNA topics in the ICND2 half of CCNA, Spanning Tree Protocol (STP) looms with more intimidation than most. As for Mastering STP verification, the process begins with mastering the show spanning-tree command. This latest sample question focuses on
To analyze Spanning Tree for #CCNA, you need to think about the root switch, then the root ports on the non-root switches, and then designated ports. That analysis usually begins with the show spanning-tree command – a command that packs
The #CCNA exam can pack a punch with what looks like a simple question, and this latest practice question is just such an example. The question asks about switch forwarding, but it combines packet encapsulation concepts. Get either wrong, and
You can learn how a LAN switch forwards frames in just a few minutes, and then explore that idea in different contexts throughout your entire span of studying for #CCENT and #CCNA Routing and switching. This latest practice question asks
Extended IPv4 ACLs? No problem. Matching packets going towards the client? A little more of a problem. Deciding whether you need to match ARP and OSPF in your ACL? Even more of a problem. This latest drill makes you think
