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For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

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 [...]

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. [...]

Several related anniversaries are happening around this same year (2016) in which Cisco has announced what is basically the 7th version of the CCNA R&S certification exams. The CCIE program [...]

Lots of people ask questions about the new products when the exam revises. And sometimes it’s a little tricky to navigate what’s what. This post cuts through the clutter to net out the details [...]

Yep, it’s official. Cisco just announced (May 17, 2016) big changes to the #CCENT and #CCNA, that is, the Cisco Certified Entry Network Technician (CCENT) and Cisco Certified Network Associate [...]

This latest #CCNA config museum  post varied the rules a little, hoping to force you to configure EIGRP to match only one interface at a time with the EIGRP network command. Today’s post [...]

As promised, here’s another #CCNA config museum piece about EIGRP. This one is a little different than what you might configure in a real network, but it does make you exercise your skills [...]