www.1001TopWords.com |
Cisco CCNA Certification: Why You NEED Hands-On Practice !
CCNA and CCNP candidates hear it all the time: "you have to get some hands-on experience to pass the exams". Candidates tend to think that's just so they can solve the simulator problems, but that's only the more obvious reason. First, I want to make it clear that I'm not bashing learning from books you have to learn theory before you can really know what's going on in the first place. The key is that to truly understand routing and switching processes, you've got to have that hands-on experience. So if the simulator questions are the more obvious reason to get hands-on experience, what are the less obvious reasons? Glad you asked! You see what happens when things don't go according to the script. One of the biggest problems with learning your skills on software programs such as "router simulators" is that with simulators, things go pretty much as planned. I have news for you: that doesn't always happen in the real world. While Cisco routers and switches are highly reliable devices, every once in a while you're going to get an unexpected result from a command. Maybe it didn't work after you typed it in maybe it has an effect on your prior configuration that you didn't expect. Maybe you don't know what happened ? you just typed in that command and the router went nuts! Sooner or later, that's going to happen to you in the real world. And as I tell my students, it's actually a good thing to have happen to you in a lab. You don't learn to troubleshoot or fine-tune a configuration when everything works perfectly. You don't learn much at all when things go perfectly. And you're practicing to learn! I often say that great chefs don't learn to cook on cooking simulators they learn in the kitchen, and they burn a lot of meals on the way to greatness. You need to screw up some configs on the way to greatness, and you can't do that on a computer program. You have to be on the real thing. You build confidence by working with real Cisco routers and switches. Would you want the Super Bowl to be the first football game you ever really played in? Of course not. Then why would you take router configuration exams and be nervous about having to create a VLAN, or troubleshoot an OSPF configuration? You cannot walk into the testing room a nervous wreck. You must have the attitude that you are already a CCNA or CCNP, and you're just there to make it official. I can tell you from firsthand experience with many students that the way you develop than confidence is to work with the real deal. You can't buy that confidence, and you can't simulate your way to it. You've got to work with real Cisco routers and switches. By working with the real equipment, you develop the real skills and real confidence you need to pass the CCNA and CCNP exams. Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage. The Bryant Advantage sells the world's best CCNA Study Guide in PDF format for only $15 and is the ONLY company specializing in CCNA and CCNP rack rentals, allowing candidates for these certifications to gain vital hands-on experience with full racks of Cisco routers and switches with labs and prices designed just for them. There are also plenty of FREE CCNA and CCNP tutorials! Visit his site at http://www.thebryantadvantage.com today!
|
RELATED ARTICLES
Power and Your PC The power coming into a computer is the most critical component, and it may be one of the most overlooked. It is just taken for granted that it will always be there and working properly. A top of the line processor and ultra powerful video card do nothing if a system does not receive the ample, stable power it demands. Having quality components providing and regulating the power supplied to a computer is critical, and this brief overview looks at a few areas worth consideration. Understanding Transistor Data and Replacement If, for some reason, you can't get an exact replacement for the transistor that you want to replace, you can refer to one of the transistor substitution guides or book, and try to identify a "near replacement". Beware, however. A substitution guide will sometimes list a replacement for your part, even though the two parts are not very similar. The most commonly used transistor substitution guides is the Philips ECG semiconductors Master Replacement Guide. Selecting the right transistor parameters or specifications for the equipment you repair will avoid callbacks from customers. Callbacks or repeated repairs due to wrong transistor substitution will cost you extra money and a waste of time. The Making of Energy Efficient Datacenters The Crooked E: The Unshredded Truth About Enron is a wonderful movie to watch. It is based on the book, The anatomy of greed, written by a former employee of Enron, Brian Cruver. One interesting thing that comes on our minds is the size of all power companies. They are all huge. We all depend on power for just about everything and yet very rarely do we think about conserving energy. A typical PC for example takes about 135 watts of power. A data center with about a 1000 servers should typically take about 135 x 1000 Watts or 135 Kilowatts and that would just power the computers. This does not include the air-conditioning and lighting. According to to a research paper sponsored by The California Energy Commission in a datacenter about 50% of the total energy consumed is by the servers and about 35% is the air conditioners. Here are some interesting research done in this field - Feeling the heat- An interesting paper by Liebert describing the challengeof effectively managing the heat dissipation in datacenters. Heat-Density Trends in Data Processing, Computer Systems, and TelecommunicationsEquipment- This white paper provides valuablecurrent data and best available insights regarding historical andprojected trends in power consumption and the resulting heatdissipation in computer and data processing systems (servers andworkstations), storage systems, and central office-typetelecommunications equipment. This problem can be solved by making better energy efficient airconditioners and by making more energyefficient computers. Many companies have taken a lot of interestin subject. However, nothing substantial has been done primarilybecause of the market requirements. The end users still want to hosttheir sites on the fastest processors which drives the market with thelatest processors. Going at this rate we would reach a time soon whenthe energy required would be much higher than the energy available inthe market. Intel, AMD, Transmeta and Via have all released processors whichconsume very low power. A typical Pentium or AMD processor consumesabout 25 Watts of power, whereas these low powered processors take onlyabout 5 watts of power i.e. about 5 low powered processors wouldconsume as much power as a single main stream processor of today. Theselow powered processors are also generally fan less processors whichmeans lower noise levels too. Intel has the centrino which has a lowerpower consumption than the regular pentiums. Intel also has the armprocessors but those are RISC. Our prime focus would be AMD, Transmetaand Via. They all have some very promising products.One thing to be noted is that most of these low powered processors workonly at about 1.2GHz or lower. So they won't be as fast the pentium4s.Which means one would have to host lesser sites per server. A goodrecommendation would be upto a maximum of 600 sites on aregular pentium 4 server. A low powered processor should comfortablytake about 200 sites. One advantage of these low powered processors isthat they have a very small form factor too. This means that one canhave more such servers in the same space that is typically allocated toa high powered servers. All datacenters use a profitability matrixbased on the following rule: Performance/PerWatt/Per Cubic Foot. This is one place where the low poweredprocessors really score high. AMD Geode? NX Processor familycomprises of the AMD Geode? NX 1250@6W processor, the AMD Geode?NX 1500@6W processor and the AMD Geode? NX 1750@14W processor. Thefirst two in these consume only 6Watts of power and run without acooling fan. According to AMD they provide the highest x86 performancefor fan less operations. They are based on the mobile AMD Athlonprocessor technology.Transmeta was one of the first companies to develop low powered processors.For a long time Transmeta was known as the company where theMicrosoft co founder Paul Allen had interests in and the placewhere Linus Trovalds, the father Linux, worked. Both of them are nolonger part of the organization. Today they are known for the twoprocessor families they have - The transmeta crusoe andthe transmetaefficeonTransmeta Crusoe?-processors range from 500Mhz to 1.2 Ghz. According to Transmeta,Crusoe is a unique combinationof software and hardware. It's this radical design that gives Crusoe itsimportant advantages, and manufacturers of all kinds of electronicdevices their first truly innovative new platform in over 25 years.Thanks to Crusoe, mobile devices can be made smaller and lighter thanever. These new devices will be more comfortable to use, too, becauseCrusoe generates very little heat a problem that plagues the industry'slegacy hardware-only processors. And because it uses far less power,mobile devices running on Crusoe run far longer on a single batterycharge, and Crusoe-powered ultra-dense servers do far more work perwatt, far more efficiently. TransmetaEfficeon processors are the higher end processors from Transmetaand they run at upto 1.6Ghz and have high performance I/O interfaces.They are built upon Fujitsu's next-generation 90nm silicon technologyfeaturing transistors with a length of just 40nm. The entire Transmeta range not just uses the x86 instruction set, theyalso have full multimedia instruction support (MMX, SSE-SSE2).Transmeta has done very little in marketing in terms of selling theirproducts for the server market. Like all other companies they havefocussed on mobile products, set-top boxes etc.. While these productsaregreat for the mobile market, they do have a great potential in theserver market. FIC, JM-Net etc. have some products for the servermarketwhich run on the Transmeta processors. Via, the Taiwanesemanufacturerpurchased the Cyrix processors and has since gotten out of the race offaster processors with AMD and Intel. Instead they are focussing on fanless, low-powered processors. They have the Eden and the C3 range ofprocessors. The power consumption varies from only 7watts to15Watts. Additionally, the processors come with thePadLock Hardware Security Suite which provides a platform approach tocomputer security, ensuring uncompromising security performance. Thesefeatures include the implementation of the Quantum-based VIA PadLockRNG (Random Number Generator), and the VIA PadLock ACE (AdvancedCryptography Engine) supporting AES encryption. According to Via, the VIA Eden-NProcessor is the world's smallest, lowest power and most securenative x86 processor. It is a mere 15mm x 15mm in terms of size andconsumes between 2.5W @ 533MHz to 7W @ 1GHz. Via again like Transmeta has not focussed in the server market. Theimages above give a good idea of the benefits of this processor in theserver market. For datacenters, Via may be the best in thePerformance/Per Watt/Per Cubic Foot matrix.Companies like Hitachi make some very good low powered hard disk driveswhich have a very small form factor. They have both IDE's at 7200 rpmas well as SCSI hard drives. Many may think it is better to take higher end servers as the power orheating problem does not directly affect them. As mentioned earlier aserver driven by a low-powered processor would be able to take justabout 200 sites. This means that a person with 600 sites would need totake 3 such servers instead of one higher powered server. Here are somebenefits of this scenario. One of the biggest factors influencing the performance of sites on theinternet is the capability of the network card (ethernet) .When all sites arehosted on just one server, they all would use the same networkcard to push the data. Now if these sites are distributed among 3servers the amount of data that the sites can push would be 3 timesmorewhich means faster access to the sites. Another benefit is that if oneof the site goes down all 600 people would not be effected, rather only1/3rd the number of sites would be affected.Hence, the number of support request would be lesser. And finally, suchprocessors are very affordable. Typically they would be just a third ofthe cost of regular mainstream processors. Ergonomic Products 101 Human beings are scaling new heights day by day. Markets are becoming more and more complex and competitive. Companies launch new products, market them, but even then are not sure if their product will match the taste, need and pocket of the consumer. This is because numerous brands are associated with a single commodity. Some companies try to win the consumer's heart via a low price while a few others offer an impeccable quality at significantly good amount. But at the end of the day what matters to the consumer is how the products minimizes the labor, enhances the work and its durability. This article will shed light on some of the eminent and world's top quality products called 'Ergo Products'. There are a wide variety of ergo products. They range from keyboards, mice, armchairs to keyboard stickers, footrests, foot switches etc. The ergo products one amongst the largely used ones nowadays . The reason being their consumer friendly nature and their troubleshooting strategy. How To Format A Hard Drive Here's how to format a hard drive (Legal Stuff: We are not responsible for any damages, lost data, or anything of the sort)... Computer Network Installation Computer network installation has become an essential prerequisite for any efficient modern-day business as it allows employees to truly work as a team by sharing information, accessing the same database and staying in touch constantly. For a computer network to give the best results, a lot of detailed planning and foresight is required before installation. Expansion Cards Part 2: AGP Expansion Cards Part 2: AGP Getting A Great Refurbished Laptop Are you sick of all the high priced notebooks out there? Does getting a used laptop seem like a better choice to you? Refurbished laptops are everywhere these days, and the word itself seems like a "buzz word" of the industry. But do these used machines actually hold up to the strict standard of the word "refurbished"? Ink Cartridge Recycling 101 Let's take a moment to think about the topic of ink cartridge recycling. In our modern world we just keep throwing our trash away without sparing it a second thought. But where does all this left over trash go? It all goes to the local landfill polluting the land and water table. Is there anything we can do towards "saving the planet"? What if you could help save the planet and make some money doing it? It sounds too good to be true doesn't it? Right now there are companies that will take away your empty ink cartridges and give you money in return! How to Check Your IP So you need to check your IP address, for whatever reason. Maybe you're playing an online game with a friend, or you need to access your PC remotely. Whatever the reason, there are a number of different ways you can check your IP address. Wireless Notebooks: What You Need To Know About Going Wireless! It's not exactly breaking news that our world is becoming increasingly wireless. Many of our daily activities that once needed a wired connection can now be done wirelessly! Thumb Drives - Great New Technology! The ability to easily move data from PC to PC with minimal inconvenience is just another benefit computers have brought to the current business world. Adding USB 2.0 The process of adding USB 2.0 ports took no time and the backup system is mighty fast. If you add USB 2.0 ports with a PCI port card, then you'll still have your USB 1.1 ports, so whatever is plugged into those can stay. Computer Parts Online In today's age, building computers on yourself is often chosen as the safest and choicest option by a sizeable part of the market for computers. There are various advantages and disadvantages for doing so. The Importance Of Current Sense Resistor In Switch Mode Power Supply Current sense resistor is usually located in the switch mode powersupply section. Newer version of monitor-the b+ (boost) circuitalso have this current sense resistor. If you repair electronicequipment especially the switch mode power supplies, the currentsensing resistor is connected to the source pin of power FET (fieldeffect transistor) and the other end to HOT GROUND. The value of current sense resistor is in the range of 0.1 ohm to about 1 ohm.The values are depends on the design of each power supply. Blu-ray: A Primer Blu-ray is an optical disc format which is set to rival HD-DVDin the race to be the de-facto standard storage medium for HDTV. The HD-DVD vs Blu-ray battle resembles that between Betamax and VHS and DVD+RW and DVD-RW. What is Over-clocking a Processor? Q : What is over clocking? Heliodisplay --Computer Video With No Screen Science-Fiction meets reality with this new video display technology. Printer Cartridge Economics -- Four Ways To Make Your Ink Last Longer Printer cartridge overheads can be a major expense for any busy office -- and even if you're working at home, it's important to factor in the amount you spend on your printer ink when assessing the cost of running a home-based business. And what you spent on that bargain-priced printer may turn out to be only a fraction of what you pay annually in printer supplies. Review of Logitech Computer Speakers When it comes to computer speaker systems, you have a lot of choice. However, there are simply some brands that stand way out in terms of sound quality and dependability, and one of those brands is certainly Logitech. Logitech computer speakers are some of the best on the market, and provide a great deal of clean, powerful sound for a very reasonable price. Logitech offers a variety of computer speaker systems, for relatively inexpensive 2.1 2-speaker systems to the power 5.1 and 6.1 gaming computer systems with multiple surround-sound speakers. Whatever you are looking for in computer speakers, it is likely that Logitech has it. |
© Athifea Distribution LLC - 2013 |