CompTIA Network+ Certification (2005 Objectives) Tutorials
Introduction / What is Network
Subtitles of the Movie (CompTIA Network+ Certification (2005 Objectives) / Introduction / What is Network )
Welcome to our network plus course. Networks are designed to allow users to have access to applications as well as data that is stored in remote locations. Networks also allow users to move data from one place to the next. An example of this would be if I wanted to send an email over the internet I would have to send an email over a very large network so they could be received on the other side. Networks can be as simple as two computers sharing information or as complicated as infrastructure devices that change as the network environment changes. So let us take a look at some of the objectives we will be covering in our network plus course. We will start up with the basics of networking. This will tell us a little bit about the hardware requirements that would be needed to make our network function properly as well as for our network will look like after everything is put together .Network connectivity is the act of establishing a connection from one point to the next and there are several different methods of this. Network connectivity also involves users telling each other a part such as computer names or computer identification numbers. On moving data from one platform to the next or from one computer to the next we have to have a standard in which this is done otherwise only one type of computer would be able to communicate. The OSI model establishes the standard for us. It has seven layers that describe how data moves from an application down to the network wire and backup to the application on the other side. The wire that data's moving on is called network media. Network media comes in several forums and will cover each of the different forums and even the connectors with those different network medias were used to connect to our network devices .When people communicate they communicate using a standard language such as the English language. Our networks have the same requirement. Networks have to have protocols. Protocols have to be the same for two computers in order for those two computers to talk. So we cover different network protocols how we get those protocols and what each individual protocol would be used for. Next we move into TCP/IP.TCP/IP is an example of a network protocol. This particular protocol is special because it's the protocol used on the internet. It is also a very common protocol to see in local networks such as the network in your home or in your office.TCP/IP has very many components to it. So we cover all of those components and talk about some of the services the TCP/IP or Transmission Control Protocol and Internet Protocol can provide to us. Next we talk about network appliances. Network appliances control the mode or the method in which data moves across a network. Network appliances can be very simple like hubs for example they just forward traffic or can be very complicate like proxy servers they can actually have evaluate the content of the traffic and make decisions based on that. One of the large obstacles that we face in networking is getting data to users that can be tied down to a desk. We can solve that with a wireless network. So we cover some of the different hardware requirements, some of the concepts and even the configuration requirements to establish a good wireless network. I mentioned the email example, so let us talk about that for a minute. Unfortunately we can't just all be on the same network together. So we have what is called a wide area network also known as the internet. With these very large networks we have to have special methods in moving data from point A to point B.So we talk about the different wide area network technologies, when they are used and what hardware requirements they offered us. Often times your find is not always simple as walking up to a computer to perform management functions. So we have remote access capabilities. In this chapter we cover some of the protocols that are used for remote access and even talk about how you would establish some of the configuration methods which you can use with remote access technology.
Tutorial Information
| Course: | CompTIA Network+ Certification (2005 Objectives) |
| Author: | Brad Causey |
| SKU: | 33608 |
| ISBN: | 1-932808-53-1 |
| Release Date: | 2005-03-22 |
| Duration: | 7 hrs / 97 lessons |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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