Jan
24
Just ahead of our brand new CCNA Voice live online bootcamp beginning this Monday, I thought it might be nice to provide an easy-to-follow graphic for those starting out in Voice (or on any other Cisco networking track). This graphic was from last year, but remains quite easy to follow for each and every Cisco track. Read More
Oct
19
In the first part of this series, we examined WEP as presented in our CCNA Wireless Course. To read that first part, click here. The WiFi Alliance introduced Wi-Fi Protected Access (WPA) in 2003 as a replacement technology for WEP. WPA is based on the 802.11i draft version 3. This improved technology relies upon Temporal Key Integrity Protocol (TKIP) to automate the changing of keys. Remember that a huge issue for WEP was the single, static key in use. Interestingly, WPA uses the RC4 encryption... Read More
Oct
16
In this series of blog posts, we will examine WLAN security mechanisms in an even greater detail than in our popular 5-Day CCNA Wireless course. We will begin with one that is now considered legacy due to major weaknesses that were quickly discovered in its implementation. This security mechanism receives the least coverage in the CCNA Wireless materials and exam, because, as we stated, it is indeed considered legacy. The official title for this technology is Preshared Key Authentication with... Read More
Oct
08
Once I catch my breath and look back at one of our popular INE courses like the CCNA Wireless course, I can delve a bit deeper into certain subjects that we did not have time for in the course. This is one of those moments. Let us get more detailed about Cisco's implementation of Radio Resource Management (RRM) in the Cisco Unified Wireless Network architecture. In today's wireless LAN infrastructures, of course users want more and more bandwidth in a greater and greater coverage area. This is... Read More
Sep
24
Encoding and Modulating Questions Only What form of CSMA does 802.11 use? What does DCF stand for? Your wireless station heres someone transmit and waits the duration heard plus what value? What logically seperates WLANs? Name three requirements to roam between two autonomous APS. Read More
Aug
31
For success designing and implementing Cisco Wireless solutions, a CCNA Wireless student needs to be familiar with the options for various wireless topologies. Two were defined by the 802.11 committees, while others were made possible thanks to excellent developments by wireless vendors like Cisco Systems. The 802.11 Topologies Ad Hoc Mode While not popular, it is possible to have wireless devices communicate directly with no central device managing the communications. This is called the Ad Hoc... Read More

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