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 [...]

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 [...]

Can you think abstractly about how layer 2 switching works, and how VLANs and trunks impact their forwarding decisions? Or do you need to see the specific configurations to make sense of it? This [...]

Layer 2 switching seems easy – but then you must think through how it works in a real network. Applying the ideas proves whether you really understood the concepts or not. This next question [...]

How does a Layer 2 switch choose where to send a frame? Does it think about more than the destination MAC address? One of the common mistakes videos in the new “CCENT ICND1 100-105 Exam Prep [...]

This post wraps up the discussion of the to the question listed in this earlier post – a question copied from the exam bank that comes with the ICND1 Official Cert Guide. Today’s post discussed [...]

Today’s post lists a question that comes with the ICND1 Official Cert Guide from Cisco Press. Here’s the story. I received a reader comment about this question, and I thought, wow, this one has [...]

Wrapping up this set of five #CCENT questions today with the completion of the answers. Sorry it took a while for this last post – work went sideways unexpectedly last week. For those of [...]

I got started on this discussion of the previous post’s sample question based on a question from a reader of the ICND2 Cert Guide. For the discussion of the answers, I’d like to focus on the one [...]

Today’s post is a question that comes with the ICND2 Official Cert Guide. A reader had sent in an errata email, claiming the question was wrong (it wasn’t in this case), but this [...]