2019 in Review

What a Year! 2019 has been a wild ride for NC-Expert! We started the year by becoming a CompTIA ( comptia.org ) partner in our own right. Until 2019, we had offered authorized classes through our partners but, in early 2019, we became a direct partner and can now offer these classes using our in-house…

Read More

Cisco Portfolio Update for 2020

Big Changes are Afoot! Cisco has announced an update to its entire portfolio of classes. An update of this magnitude has never been attempted by Cisco and this mammoth task is due to be completed around February 2020. The New Year is bound to bring exciting changes! In early 2020 almost all Cisco’s current portfolio…

Read More

Important CCIE Update

Cisco CCIE Training Update This is a special notification for NC-Expert’s CCIE Candidates. We have learned from Cisco that it expects to refresh its entire portfolio in February 2020. We strongly urge all CCIE Candidates to prepare to complete their studies and sit their respective lab exams by the end of 2019, latest. We understand…

Read More

Tracking sequence numbers and flags in Wireshark

Tracking sequence numbers and flags in Wireshark One of the things I learned a while back was a really good tip when using Wireshark. I find people sometimes get tied up tracking the sequence numbers and the wireless frame flags in Wireshark. Having to open the frames and look for flags and following sequence numbers…

Read More

Homer and Bart and WiFi

I find myself explaining layer 1 physical spectrum analysis quite a lot these days. Spectrum Analysis is everywhere today. There is Cisco Spectrum Expert, and CleanAir (now the chip is installed in every Enterprise Cisco AP). There is also Metageek Chanalyzer, and of course Cisco Meraki has it built in. Identifying the different signals can…

Read More

An easy way to remember V and H

V and H – An easy way to remember Short blog entry this month but, I hope, quite an important one because I want to give you . This month I want to give you an easy to remember tip, concerning antenna coverage pattern charts. Directionality of antennas is quite important. When planning a design,…

Read More