A Drink of Technology for the Thirsty Mind
When you stop to think how well the internet is put together, you start to wonder how the internet coexists with all the chaos that results from broadcasts, data collision, and data loops. Yet, despite the odds, the internet is still (currently) alive and thriving today. But what can we attribute this achievement to? As you’ll find in the coming […]
Read moreA 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 setting up your network, you’ll […]
Read moreThere 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 acronym means, you’re set! (And […]
Read moreThere 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 the Network+, CCENT, and CCNA […]
Read moreFirst 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 same time, we get data […]
Read moreYou may not know it, but your network is probably unsecured right now. Anyone with the right tools could capture, manipulate, and add data between the connections you maintain with the internet. The security cat and mouse game isn’t one sided, however. Network administrators are currently taking advantage of Kerberos to help combat security concerns. Project Athena Project Athena was […]
Read moreThe denial of service attack is statistically the most used malicious attack out of them all. This stems from the ease of use of the attack, as well as the alarming lethality. Literally anyone can bring down a website with a simple command prompt. The question is- how do you protect against an attack that can cripple your network or […]
Read moreIn the previous section we reviewed several aspects of the Transport Layer. We learned a great deal of information; covering sockets, ports, TCP, UDP, segments, and datagrams. Now we will take a look at the fourth and final layer of the TCP/IP stack: the Application Layer. What Does The Application Layer Do? A lot of newcomers to TCP/IP wonder why […]
Read moreIn 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 receive email, we want to […]
Read moreIn the previous section, we learned about the Network Access layer. Essentially we learned more about the anatomy of a frame, physical addressing, and what exactly the physical layer accomplishes. Don’t relax yet- we still have three layers to go! What the Internet Layer Is Responsible For The Internet Layer is used to deliver data on a complex routed network. […]
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