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Cisco Certification: A Survival Guide To The Cisco Cable Jungle
One of the most confusing parts of beginning your Cisco studies is keeping all the cable types separate in your mind, and then remembering what they're used for. This often occurs when a CCNA or CCNP candidate starts putting together their own home practice lab, and they suddenly realize that they have the equipment to run labs, but not the cables. With this in mind, here are some common Cisco cable types and their primary use. First, there's the regular old "straight-through cable", so named because the eight wires inside the cable go straight through the wire. While the wires may be twisted inside to reduce electromagnetic interference (EMI), the wire that's connected to Pin 1 on one end is connected to Pin 1 on the other end, and so on. In a home lab, a straight-through cable is often used to connect a switch port to an Ethernet port on a router, with a transceiver attached to the Ethernet port. Straight-through cables are also good for connecting a BRI interface to an ISDN simulator. The "crossover cable" is so named because the wires do cross over between pins. This allows the devices to both send and receive at the same time, and crossover cables are a must for directly connecting ports on Cisco switches to create a trunk. The "rollover cable" allows you to connect directly to a Cisco console port with your laptop or PC. This is the blue cable that comes with new Cisco devices, and it's the one that engineers tend to hold on to with their lives. Without a rollover cable (also commonly called a "console cable"), you can't connect your laptop directly to a Cisco device. Finally, there's the DTE/DCE cable. To create a frame relay cloud in your home lab (using one of your Cisco routers as a DCE), or to directly connect two Cisco routers via their serial interfaces, you will need a DTE/DCE cable. Remember that the DCE interface will need to supply clockrate to the DTE interface. The different cable types can be confusing when you first read about them, but after tearing down or building your home lab a few times, you'll definitely have them straight come test day! Best of luck in your lab and your exams, Chris Bryant CCIE #12933 Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage. The Bryant Advantage's website offers FREE ebooks and tutorials for the CCNA and CCNP exams, FREE subscriptions to "Cisco Certification Central", and sells the best CCNA and CCNP prep courses and books on the market today. Visit his site at http://www.thebryantadvantage .com today !
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Refurbished Computers on the Internet What is a Refurbished Computer? Selecting a Personal Digital Assistant A Computer in Your Hand Quick System Restore with ASR Backups ASR (Automated System Recovery) is a feature available on the Windows XP Pro and Windows Server 2003 operating systems for quick and efficient system backup and restore. If You are the Only User on Your Windows XP Computer, Do You Think One User Account Is Enough? I am going to assume that you are running windows xp on your machine, and you are the only user on this machine. That is right, no one else uses your computer except you. 5 Simple Ways To Increase Your Computer Speed & Help Your Computer Run More Efficiently! If you're a computer expert, you'll probably already know about these tips (hopefully this will provide you with a little reminder). If you're not an expert, don't worry - these tips are simple, and don't require a lot of computer experience. Why There Are Color Differences in Printing from Your PC This article describes the basic properties of color, what the relationships are between them and the differences between what you see and what you actually get using your inkjet cartridges. Enhanced Web Browsing With Toolbars As the Web grows more crowded and just plain "noisy" with information bombarding us from every angle, most people welcome any tool, trick or shortcut to help them wade through the mountains of data to find what they want. Cisco Certification: Building Your Own Home Lab, Part I CCNAs and CCNA candidates hear it all the time: â??Get some hands-on experienceâ??. From my personal experience climbing the Cisco certification ladder, I can tell you firsthand that there is no learning like hands-on learning. No simulator in the world is going to give you the experience you will get cabling and configuring your own routers. Lives With Games Tradition and Industry The United States Of America citizen feels that games is a part of their life while developed countries such as the United Kingdom and Japan would feels that Games is high prospects to gain profit either in domestic level or internationally. Games is very influence in human life at this time. Games means in reference to computer, Console video such as playstation, PDA and also Telephone Hand-sets. How To Buy An MP3 Player Are you looking for an MP3 player but am not sure which type and model to buy? There is a wide variety of MP3 players out there, from flash memory based players to hard drive based players. Choosing a good player from the market is no easy task. What features should you look for? What are the key considerations? This article aims to answer those questions and more. Now, let's see how we can pick the perfect MP3 player. 4 Computer Money-saving Tips Tip #1 -- Rebates: A rebate is not always a bargain. Computers with rebates are often close to being discontinued. You may pick up a good deal or purchase technology that's about to become yesterday's news. What's more, stores will often package computers with a bunch of free items to make it look like you're getting more value. Chances are the extras are either poor quality or items you're unlikely to use. Also, they're counting on you to not redeem your rebate, a very common occurrence. Upgrading Your PC for Non-experts Intro Do Higher Digital Camera Prices Mean Better Cameras? Understanding digital camera prices makes finding the best camera value much easier. Uncovering digital cameras best buys is easier if we know what's available within various price ranges. With that in mind let's explore camera prices in more detail. Tips For Getting Technical Support Help Online Sometimes your PC will start acting strange for no apparent reason or a program which you use regularly will all of a sudden stop working as it should. This can be a frustrating experience especially if you have no idea where to go for help. If this happens to you, don't panic! Here are some simple tips which may turn your frown upside down. DVD The Ultimate Consumer Digital Media Digital Video Disc or as it is sometimes referred to Digital Versatile Disc (DVD) has for the last several years been Hollywood's primary video delivery method and with good cause. This inexpensive, compact media delivers excellent video and audio quality. This same media has also become the preferred medium for many multi-media professionals and audiophiles. Technological advancement and availability have pushed this media into the consumer market for a number of reasons and its use and popularity will only increase over time. I will attempt to highlight some of the advantages this medium offers. This article is only intended to be an introduction to this incredibly diverse digital media and not to be considered a technical thesis. Plasma TV vs LCD TV For those seeking to buy their first flat panel TV display device, it is easy to be confused with conflicting and counter claims by different interest parties. So what is the truth in the competition between LCD and Plasma TV? Here's are some pointers before you rush out and buy your flat panel TV on impulse . Just consider and keep them in mind when choosing. Actually, both types of technologies have their pros and cons. Let's start with various factors. Picture Quality Plasma TVs have better contrast ratios and show better blacks than an LCD TV. That means in a dark scene, you are able to see images more clearly defined. This is because in LCD technology, liquid crystals are unable to shut off all the light completely due to the presence of the backlight resulting in light leakage and therefore it is impossible to get absolute black.I understand plasma TVs are able to produce better color saturation than LCD TVs. Generally, the native resolution of LCD TVs are higher than that of plasma TVs so you may get greater details when watching your programs especially in high definition video sources. Screen Size If you looking for a really big screen, then you have to go for plasma TV as they are available in sizes up to 60 inches. LCD TV on the hand come in maximum sizes of up to 40 inches. If you compare prices on both technologies for the same screen size, you will also realise LCD TVs are more expensive. Life span Passwords and the Human Factor Passwords have a strange dual nature. The stronger and safer the password the more likely it will be undermined by human weakness. A Tale of Two Regeds Tech support tells me to type 'regedt32' as opposed to 'regedit' to access the registry from the command line (Start > Run). I question the use of 'regedt32,' but he says to do it anyway. Whenever I use the registry editor, I recall this incident and never look up the tale of the two regs... until now. Cut Through the Hype and Make the Right Digital Camera Comparisons There are soooo many choices. With all the styles and features, and prices are all over the map, digital camera comparisons can be mind-boggling. Pixels, memory, optical and digital zoom, camera size and cost are all factors to compare. So how do we sift through all the hype and find the best digital camera? Why Using an Ad Blocker Can be a Bad Idea Ad Blocking is getting to be a common sport on the internet. Now there are some legitimate uses for an ad blocker. Some ad companies resort to downright harassment when serving their ads using annoying pop ups, flying ads, floating ads and the like. Blocking these types of ads are not a problem. Using an ad blocker though to block all ads on a site including text ads, banner ads, etc is wrong and here's why.
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