David’s Cisco Networking Blog:

August, 2008


August 25, 2008  9:19 PM

How to put an IP address on an Ethernet interface



Posted by: David Davis
CCNA, Cisco

There are 4 easy steps to accomplish this task.  Remember that you will always need to access the global configuration mode to add interfaces. Let’s walk through these steps together. First you should connect to your router. You would do this with the enable command. router>...

August 25, 2008  9:18 PM

Eight Decimal to Binary Conversions to memorize for CCNA certification



Posted by: David Davis
CCNA, Cisco, Networking

128 – 1000 0000 64  -   0100 0000 32  -  0010 0000 16  -  0001 0000 8  -   0000 1000 4  -  0000 0100 2  -  0000 0010 1  -  0000 0001


August 25, 2008  5:16 AM

What effect could Internet access have for everyone around the USA?



Posted by: David Davis
Wireless

It has been suggested that the United States only uses 5% of the Internet. There is so much untapped information that can be accessed but unavailable due to technology restraints. But, thanks to the latest article from


August 24, 2008  9:15 PM

Four OSPF Router designations and their responsibilities



Posted by: David Davis
Cisco, OSPF

OSPF Routers have different responsibilities depending on their position and functionality.  Let's look at them- The Internal Router – This router exists within an area. It’s responsible for maintaining a current and accurate database of every subnet within an area . It’s...


August 23, 2008  9:08 PM

Seven Acronyms that will come in handy for CCNA certification



Posted by: David Davis
CCNA, Cisco

ABR – Area Border Router:  A router that has interfaces in many OSPF areas. For more information on ABR, visit: Managing...

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August 23, 2008  5:03 AM

Wheel of Fortune – Cisco style – IPrize



Posted by: David Davis
Cisco

Playing off the idea that the public loves game shows, Cisco has come up with an ingenious way of asking the public for help on a concept for its next $1 billion dollar business.  According to Guido Jouret, chief technology officer for Cisco's Emerging Technologies group, “its down to 3...


August 22, 2008  8:41 PM

The three main Network Topologies and how they can work for you



Posted by: David Davis
CCNA, Cisco

Studying for the Cisco CCNA or CCENT? You will certainly run across networking topology questions. Here's a quick review: First of all let’s define what a topology is- Simply put, a topology is the layout of a network. There are really three basic types of topologies. They are Star, Bus, and...


August 22, 2008  5:39 AM

Could Cisco’s latest purchase announcement make working from home easier?



Posted by: David Davis
Cisco

With gas prices going up, up, up and salaries virtually remaining the same, companies are looking for ways to help ease the pain at the pump. Cisco has unveiled its intention to buy a Seattle based company, Pure Networks, which is a leader in home networking software. Working from home will become...


August 21, 2008  8:29 PM

Determining the Network ID using the Logical AND Operation



Posted by: David Davis
CCNA, Cisco

Studying for your CCNA? Having trouble with IP Subnetting? It’s all about the 1’s and 0’s. We just need to convert our IP address and Subnet mask into binary and then subtract the ones from the zeros. 1+1 = 1, 1+0 = 0, 0+1 = 0. It really is that easy. Let’s find out what the network...


August 20, 2008  11:26 PM

How can Cisco Automatic Signature Extraction prevent zero-day virus attacks?



Posted by: David Davis
Cisco, Security

The Cisco IOS is powerful and already running on your routers. You would think that it could play a part in this virus detection and prevention, right? In my latest TechRepublic article, learn

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