With just about everything involving computers, there are two stages: planning and imple- menting. So far, I have discussed some of the more basic aspects of planning, a fair share of which you may already be familiar with. The following sections will address some of the concerns you'll face with topological implementation in the modern-day workplace?issues relating to where you put the servers and how you connect them to each other.
The Microsoft MCITP Certification http://www.stormcert.com enterprise administrator exam will test two things: your knowl- edge of both design logic and your ability to make the right decision at the right time. With regard to physical topology decisions, it usually means choosing the right type of server to be connected at the right place, running the right services and features. Accordingly, I'll start with a brief discussion of the physical characteristics of the environment that you have to consider, then discuss WAN considerations, and ?nally discuss speci?c server roles that require attention by administrators, such as the global catalog.
When an administrator says that they have a ?restriction,?it doesn?t mean they?re bound by the rules of emissions or dumping waste (although that beast does wander into our back- yards occasionally). Instead, it usually means that something about the campus design imposes a physical limitation that hinders the speed of the data. These limitations are usually the result of geography, obstructions, or inherited design.
If parts of your environment are separated by great distances, you will most likely have a slow WAN link that connects your offices. Today this is less of a problem. As of 2008, even home users can purchase MCSE 2003 http://www.stormcert.com up and down connections for their own personal use. That is an astonishing amount of data. However, even with the fastest WAN connections, the rule of thumb when it comes to distance still applies. If it's far away, it's probably going to be slow. Consider Figure 1.12. In this example, you have three offices; two are located in the same building in Seattle, and one is located in San Antonio. Obviously, the connection in San Antonio is going to be limited by its T1 connection.
Have you ever been asked to install a server in one location and connect to another and then been blocked by a giant wall that is 8-feet thick? If you haven?t, you're the single lucki - est administrator on the planet, or you simply haven?t been in IT long enough to know the joys of dealing with the other kind of architecture. This is usually more of a building administration problem than an IT problem; however, it's good to note this, because it is a physical limitation.
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CCNA Exam course is different from other courses in a lot of ways. For example, the candidate is just supposed to qualify one network+exam for him to be awarded with the certificate.
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