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Carrier Sense Multiple Access Collision Detect (CSMA/CD) Explained

First thing is first: save yourself some trouble and remember that carrier sense multiple access collision detect is best referred to as simply CSMA/CD. We’ve heard some ridiculously long terms before, but CSMA/CD takes the cake. Jokes aside, this media-access mechanism is what keeps networks running. If two or more computers transmit data at the […]

29Jan2008 | | 12 comments | Continued
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How the Transport Layer Works

In the previous section we took a look at the Internet Layer. We took apart the IP header information, reviewed IP addresses and routing information, and briefly discussed ARP and RARP technologies. Next in line we have the Transport layer- the layer responsible for actually getting the data packets to a specific location. When we […]

27Jan2008 | | 5 comments | Continued
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How to Subnet a Network

A properly designed subnet can do wonders for the security and performance of a network. The main idea in subnetting is to divide a network into smaller pieces, which we call subnets. Actually implementing a subnet is typically more difficult than simply using the default subnet mask of 255.255.255.0. This usually means that temporary or […]

27Jan2008 | | 80 comments | Continued
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A Guide To Network Math

You are probably accustomed to using what is called decimal- the numbering system you’ve been learning since kindergarten. In networking we use three primary numbering systems: binary, decimal, and hexadecimal. It is direly important to know what each numbering system is for, and more specifically how to convert from one system to another. But don’t […]

27Jan2008 | | 3 comments | Continued
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A Brief Overview Of Networking Media

There is all sorts of networking media lying around for the taking. We have copper-base media, optical fiber, and the new contender: wireless. This article covers a brief overview of each networking media type. By no means is this a complete guide to every single networking media type, but instead it is geared towards what […]

27Jan2008 | | 3 comments | Continued
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The Difference Between LANs MANs And WANs

There are several types of computer network designs- you are more than likely familiar with the LAN, or local area network. But the fun doesn’t stop there- we have MANs, SANs, CANs, and more “ANs” than you can shake a stick at. But don’t worry- if you can remember what the first letter in each […]

27Jan2008 | | 3 comments | Continued
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A Guide to Network Topology

A network topology is how computers, printers, and other devices are connected over a network. It describes the layout of wires, devices, and routing paths. Essentially there are six different common topologies you should familiarize yourself with: Bus, Ring, Star, Extended Star, Hierarchical, and Mesh. Although it is usually easier to start connecting wires and […]

26Jan2008 | | 25 comments | Continued