2/18/2009

Updates to the CCIE Lab and Written Exam Question Format and Scoring

Effective February 1, 2009, Cisco will introduce a new type of question format to CCIE Routing and Switching lab exams. In addition to the live configuration scenarios, candidates will be asked a series of four or five open-ended questions, on the computer screen, drawn from a pool of questions based on the material covered on the lab blueprint. No new topics are being added.


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To increase the security & integrity of the CCIE R&S Lab exam, there will be a series of open-ended, short answer questions added to the lab exam and delivered online in all global lab locations. The addition of these questions does not change the lab exam blue-print, nor does it require time be added to the total exam time. At this point the questions are being added to the Routing and Switching lab; lab exams in other tracks will be announced in advance.

2/17/2009

Android G1 - more battery

The biggest problem with G1 is the battery so lets try with different one. I just ordered it.

This Innocell extended battery provides more than double the capacity of the standard battery. Even with heavy phone and data usage, this battery will keep your G1 charged and ready to go.
 
- 2600mAh - Up to 125% more capacity than the original
- Includes a replacement door with our soft-touch "rubberized" texture to improve grip
- High quality Japanese cells
- Extends the depth of your device by only 5mm
- Pair it with our Horizontal Innocase Leather
 for extra protections on the go**

*All battery claims are dependent upon usage patterns, network configuration and many other factors; actual results will vary.

** This 2600mAh Extended Battery is not compatible with Seidio Spring Clip holster.

2/15/2009

Palm with WebOS is comming





Nokia 5800 Xpress Music

I bought a gift to my sister, a cell phone Nokia 5800 XpressMusic (don't get me wrong this is not the first Nokia phone I've playied with). I used to be a big fen of Nokia but last year or so they are going down really fast compared with their competitors (HTC,etc)

As we know there is few very big players on the Mobile Operation System business at the moment - Microsoft with Windows for mobiles/Google with Android/Apple Iphone and maybe BlackBerry (hopefully Palm very soon)

So when you start playing with Nokia 5800 the first impression is like the last impression
it's crap.. you have to pay for every application which is in the "software download applications"
compared with Apple (for example) they just announced that they have 20.000 applications
I am not sure how many are they in Android.

I personally don't recommend this phone to anyone.. this idea of double touch the icon to
activated it it's really anoying.. the phone customization is really bad - it suppose to be
more interactive. hm.. Let me tell two good things for this phone.. it has good battery
and really good GPS chip + offline maps. (u have to pay licenze)

2/12/2009

Velocity1 and BBC


We've got few visits from BBC to show up our 100Mbit/s service called Boost. It's a pretty good marketing idea
and good for the people who are using file sharing and HD streaming applications (like cisco video conference systems) etc. 

BBC did few tests described in the link bellow - the first test was with iPlayer (BBC application) and iTunnes
apperantly they weren't happy with the iTunnes because it was showing 10mins to get the movie so we had
to explain to them that we don't have control on 3th party servers and the idea behind the garantee of some capacity
is that we have the promissed bandwidht to our uplink providers and after that we don't have any control. 

They also did another "Web based speed test" which showed 78Mbit/s downlink and 50Mbit/s uplink BUT
most of these web based speed tests are based on the average broadband connectivity in UK.








100Mbps broadband - who needs it?
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source:http://www.bbc.co.uk/blogs/technology/2009/02/100mbps_broadband_who_needs_it.html

2/08/2009

Optical chip could lead to terabit Ethernet

Danish and Australian researchers have developed a chip that efficiently reads 640Gbps optical transmissions and could help pave the way to terabit Ethernet.

The breakthrough comes not on the laser end of the connection by boosting the speed of transmission, but rather at the receiving end where very high speed, error-free reception is required to sort out multiple wavelengths of signals that have been multiplexed at the sending end.


The discovery comes just as 100Gbps Ethernet is in its infancy but predicted to become more common over the next three years.

The new receiver technology described in an article to be published Feb. 16 in the journal Optical Express relies on a 5 cm optical waveguide, a dramatic reduction in size over competing technology that requires 50 meters of special optical fiber and is inherently unstable, according to the Optical Society of America



The researchers say the compact size of their waveguide makes it possible to integrate it with other components to make faster optical chips.

Current top-speed optical networking employs optical time-division multiplexing (OTDM) that creates 64 10Gbps channels on a single wavelength, according to Leo Spiekman, a co-chairman of the Optical Fiber Communication conference scheduled for March in San Diego, Calif.

In order to demultiplex such an OTDM stream, a second control wavelength of light is introduced to the signal stream to read a particular channel. In current demultiplexers, that process takes place on spools of fiber where the length is so great that the signal and the control streams get out of phase, he says. The device from the researchers is short enough so this dispersion is not a problem, Spiekman says.

The experimental all-optical demultiplexing is done with a chip made of the material chalcogenide, the researchers say.

"You need this type of technology to make terabit speeds on single channels," Spiekman says. "This is one of the enablers for you to go to terabit Ethernet at some point in the future."

The researchers are led by Leif K. Oxenløwe of the Technical University of Denmark and scientists at the Centre for Ultrahigh Bandwidth Devices for Optical Systems in Australia.

100 Gigabit Ethernet trumps OC-768 by 2012, firm say.


source: http://www.networkworld.com/news/2009/020309-optical-chip.html?netht=ts_020309&nladname=020309dailynewspmal