PurposeThroughout my career I've met too many people with professional certifications, like CCNP and CCDP, that did not even know how to properly configure basic OSPF, EIGRP passive interface, or an ACL. These features should be easily configured by a CCNA certification holder, and not present a challenge for a CCNP certified individual. Going through all the certifications myself, I know just how hard it really was to gain a strong enough understanding of the technology to pass certification exam. There is now way a CCNP certified engineer that received the certification in a legitimate manner would not know that L3 interfaces are off by default, why it is not possible to configure extended VLANs with VTP mode set to server, or think that IGMP is L2 protocol in switches. No person with CCIP or CCVP deserves the certification, if they think that policer can queue the excess traffic, or that policer refills the Bc bucket every Tc interval for that matter. (For those who are wondering, policer refills Bc prorated to the Tc every time the packet is policed, it does not wait for the Tc. Page 361, Cisco QoS book by Wendell, Second Edition, ISBN 1-58720-124-0)
Certifications are not papersThey give people an opportunity to evolve their understanding of networks. They show the available paths and directions in networking. They are an achievement proof primarily to the holder, a watermark in one's life, a motivation. Certification is not a piece of paper, which it certainly becomes when an individual uses braindumps to pass certification tests.
How Cisco certification tests are createdCisco offers a wide variety of official trainings that cover a precise topic, like BGP, or an area of networking, like routing. For every training there is an official set of training materials. From those training materials an assigned team creates a pool of 400 to 500 questions. When an individual takes an exam, system pseudo-randomly chooses about 60-70 questions from that pool. Not every official training has a certification, but every certification has an official training.
How an individual should studyRemember, the certification test are created from the training, which describes a technology. Certification test checks the test taker's understanding of the topic. Any book that sufficiently covers the topic will be enough for an individual to receive all the theoretical information required to understand the topic. Understanding is what is tested, understanding is what test taker should pursue. That is another reason why certification is of the most value to the test taker - reward for all the effort and sacrifice put in studying the topic. As a side note, while official Cisco training might be too expensive to an individual, it is definitely not a burden to a corporation, even those the management might say so.
How braindumps are created and usedBecause the pool of questions is relatively small, after enough people with wrong intentions take the official test and steal the questions (using cameras to take photos of the screen with the question displayed) the braindump team is able to put together all or nearly all questions that the original team that created the test put together.
Memorizing the 400 questions and answers is a cakewalk. Really understanding the technology is what's hard. I remember I had to memorize a five-page poems in fourth grade, and I did that with a success. I was nine years old then. But do I remember any of it? Of course not. To learn and most of all understand technology requires years of hard effort. To pass a certification test by memorizing questions and answers is a matter of several days at most. People do not become engineers overnight. Will anyone understand any of the technology? Of course not. Just like I don't remember the poem. But what I do remember is IS-IS levels and ISO protocols I studied over eight years ago, because I thought they might be on the CCNA certification test that I was preparing for. I never touched or read about IS-IS since then. But it's amazing how much I still remember from the top of my head! All because I understood IS-IS's basic principles.