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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…
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…
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…
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…
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…
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…
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…
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…
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…
This post gives you an exercise with five different problems. Each begins with an expanded IPv6 Global Unicast Addresses (GUA). For each problem, start by abbreviating the…
