802.11n devices

It is not out. Dlink and Netgear have some devices out. Here are links.

Dlink 802.11n device
http://www.dlink.com/products/?sec=1&pid=487

Dlink 802.11n PCMCIA NIC
http://www.dlink.com/products/?sec=1&pid=489

Netgear 802.11n device
http://netgear.com/products/details/WNR854T.php

Netgear 802.11n PCMCIA NIC
http://netgear.com/products/details/WN511T.php

So far I have not seen any Apple Airport devices and I do not know
what name they will use for their cards. The 802.11b cards were just
called Airport and the G cards were Airport Extreme.

Emerging Technologies, RFID, VoIP, Wireless, SOA, and EAI

I am busy writing things lately. I am working on a professional statement and on writing an article on emerging technology for Certification magazine.

I am compiling a list of technologies that those in IT should be aware of. So far I have the following:

  • RFID (Radio Frequency Identification)
  • VoIP (Voice over IP)
  • Wireless 802.11n
  • SOA (Service Oriented Architecture)
  • EAI (Enterprise Application Integration)

I will be adding a few more before the article is done. If you have a suggestion, just comment or email me. When I was choosing technologies, I found myself looking a lot at wireless. I know wireless is big but I also have been doing a lot of research into wireless technologies lately and that may cause me to have a bias towards it so I want to focus on technologies around the board, networking, programming, security, etc. I am looking at a security component right now.

The article is still fairly general though so everything is subject to change. I should have it written this week or next week. The professional statement needs to be done sometime this week at best. That one is giving me trouble because I do not have a frame of reference for the paper. 

802.11n technology

I was admiring the new switch with my brother and I thought about the 802.11g router that is sitting on top of the switch.  I want to upgrade to 802.11n but I do not want to buy any pre-n devices.  The pre-n devices will never be as compatible with future devices as the true n devices but it seems that I will have to wait until the end of 2006 or the beginning of 2007 for the standard.  Maybe next year I will be connected using an “n” card.

The standard should boast 108Mbps or even as high as 200Mbps.  Here are some other technical details so far.  Technologies present in the 802.11g standard such as Orthogonal Frequency Division Multiplexing (OFDM), forward error correction (FEC) coding, and quadrature amplitude modulation (QAM) will still be used.  When I read that, I wondered what is changing.  Using OFDM should provide for fluid backwards compatibility with “g” cards.  The standard employs the use of two antennas instead of one in a technology known as Multiple Input Multiple Output (MIMO).  This should reduce interference and increase speed.  More channels will also be used.  This should increase bandwidth but I imagine that it will also reduce the number of non-overlapping channels available to administrators who desire to co-locate their APs.

Another thing I wonder about is what Apple will call their “n” capable cards.  They do not stick to the standard nomenclature.  Their 802.11b card was called the AirPort and their 802.11g card the AirPort Extreme.  My plan is to upgrade the AirPort Extreme card on my laptop and put it in my G4 cube.  The other laptops will get new PCMCIA cards.  I have to make sure the G4 will handle the extreme card.

Here is a good technical overview on some parts of the standard.  http://www.deviceforge.com/articles/AT5096801417.html

WiFi Rabbit

I was made aware of this little creature on the CWNP forums.  It is a small wireless rabbit that can receive messages, music, tell you the weather and time and other things.  Interesting.  Here is the website.  http://www.nabaztag.com/vl/FR/index.jsp#

CWSP

I am really cutting this close.  The CWSP test changes on January 1 and I just scheduled the test for December 21.  I am going out of town from the 24th to the 1st so this is really my only chance.  I must study very hard and pass it the first time.  I am feeling pretty good about the material right now but I have not taken any practice tests yet.  I am going to try that tonight. 

I am working on the midterm exam for the OS class today.  I am giving a review tomorrow and the test is Monday.  I also need to lecture on Windows XP and  Windows 2000. 

A co-worker wants a low end PC for internet use so I am fixing up a computer for him.  It needs to have a DVD drive in it and run Windows XP.  Those are the only requirements.  I am charging $100 for the machine and throwing in a 15" CRT if needed for free.  I can get them at Goodwill for less than $10 each.  That is how I am keeping my lab stocked at school.  Some are better than others and sometimes they break but it is ok. 

CWNA

I am studying to take the CWNA (Certified Wireless Network Administrator) exam.  I plan on taking it in 3 weeks and I have been studying for 2 so far.  I usually spend a little more time on a certification but I am teaching a computer hardware course in 3 weeks and I want to have this certification behind me so I can concentrate on the class.  I found an online study group which has not worked out well so far but I hope to have more communication in the future.  Until then I will continue to read white papers and my books and talk with people on forums.

Here is a quite from someone who recently took the exam. 
" Let me share my progress to passing the CWNA exam. 2.5 yrs of I.T. training, college courses, and labs, including a 6 month security class. CompTia A+, Cisco CCNA, Microsoft MCSA/MCSE, THEN CWNA. And yes, it was hard, I saw questions on the exam that I have never even remotely seen anything like it. I was answering questions on RC4…which made me wonder if I had gotten a CWSP exam by accident. No matter, I have my CWNA now, and plan on taking CWSP within 1-2 months."

I hope I can say the same thing soon.  I guess I will see.  I will take it again if I fail and study harder.  It is my goal and I will see it through.