I’ve written and taught a lot during my career, but I’ve never made a concerted effort to use YouTube. Well, it’s time. The channel name is Network Upskill, and the URL is www.youtube.com/@networkupskill. You can go straight to the channel and watch the channel intro video—or read this short post for a few words about […]

We’ve updated the blog site! Driven by a need to change to a new WordPress theme, I invested more time updating some of the styling, content, and features to make the site more usable for anyone studying for CCNA. I hope you like the changes! The rest of this post describes what changed here in […]

The last several editions of the CCNA Official Cert Guides include an appendix titled “Exam Updates.” It exists as a simple way to deliver small amounts of new content to you, the people who own the book. Books are great, and most people still prefer a paper book – but that does not allow for […]

I like to use what I call terminology heat maps when studying, so much so that I also recommend them to students when teaching classes at O’Reilly (learning.oreilly.com). I describe what a terminology heat map is in class – but its time to give some support to the idea here at the blog. This page […]

Back in 2023, Cisco announced an annual cycle during which they consider making changes in each certification track. Cisco just announced their plans for this year’s cycle for the CCNA certification, and the big news: No CCNA blueprint changes! I didn’t bury the lead, but if you want more about how that might impact your […]

Cisco just released web pages and has begun discussing a new initiative called Cisco Certification Roadmaps. The short version: Cisco tells us the timing of potential updates to their exams. Yep. It’s a whole new approach, and Cisco is being quite transparent about it. Let’s take a look.

The most recent CCNA and CCNP exam release (February 2022) had a minor side effect that left many wondering: Was Cisco continuing to use the Sim and Simlet question types? A Cisco blog post in early July 2022 clarified that question, not with a backward look at Sim/Simlet, but with exciting news about a new […]

Hello again to all you regular folks here at my blog! I’m back, working a little here and there in May. This brief post is to let you know I’ll be answering your comments in the coming days. Sorry for being away for April 2022, but the Doc said it had to be. I may […]

Hello to all you regular folks here at my blog! I’ll be away from the blog from now through all of April, through Mid-May, 2022. I won’t be checking your comments during that time, and because I run a one-person company, there’s no backup. I’m leaving this post to give you a few tips about […]

For this next IPv6 addressing drill, you begin with a prefix configured on a router LAN interface using the ipv6 address prefix-id/64 eui-64 command. Your job: calculate the Global Unicast Addresses (GUA) and Link-Local Address (LLA) used on the interface using EUI-64 rules. This post has both the questions and the answers – just click […]