As part of this unit I am going to demonstrate an understanding of networking issues and how communications technologies work, and are used. In order to show this I am going to write an essay. I will write this essay using my existing knowledge, research, notes that I have taken during theory lessons and the meeting with the network manager. Issues that I will include within my essay are (I will also explain all my use for these technologies).
Hardware components required such as cables, connectors, network cards, hubs and switches, I will also look at other ‘wireless’ methods of connecting a network together… Workstations (intelligent and dumb), file servers and print servers…
Network topologies, including sketches of typical network layouts… The positive and negative effects of installing and using a network… Network security, such as passwords, virus checkers and firewalls… The reasonabilitie’s of a network manager… Network services, for example e-mail What is a network? There are 2 main types of networks, A Wide Area Network (WAN) and A local area Network (LAN).
A Wide Area Network (WAN) is a network, which connects computers from a large area, such as a city or an area where people live.
A WAN can send information’s through satellites, phones lines etc. A Local Area Network (LAN) is a network, which connects computers from a small area, such as a building or a classroom. WAN LAN There are many advantages in networks such as you can work away from your office and connect up at home. This will allow you to send and receive files. Also if your computer is connected to a network then you can share equipments like a printer and a modem. Sharing information is anther possibility; with a network you can quickly share sounds, images, files and other sorts of data and programs.
The Essay on Star Topology Network Central Connected
Computer Network Modifications. Regional Offices. Existing Bus Topology (hubs) should be replaced with star topology using switches. In star topology, all devices are connected to a common central location, typically a hub or a switch, in this case we will be using switches. (See diagram 1) when a node sends data to the central location, the central device retransmits the information and sends it ...
A network manager manages the network. A network managers checks if all things in the network are performing properly. A network manager has many names such as, system administrator, information systems manager. There is a peer-to-peer network and a client / server network. These two are different kinds of networks, which allow the user to store and manage files. A peer-to-peer network stores information.
This network connects few computers. Everyone on a peer-to-peer network store their files and data on their own computers. Also anyone on that network can access files on a different computer. The files are stored in many different areas. This enables for the files difficult to be managed, back up and protected.
Information also can be stored on a client / server network. The server is the central (main) computer, which stores files and data of everyone on the network. A client is a computer, which stores files and data on the server. This network provides a higher amount of connecting 10 or more computers or computers, which have a lot of information on them.
This network stored files and data on a central computer. So people that are connected to the network can log on and access files stored on the central computer. This network is best for places like a school or a building with lots of computers. The files of everyone are stored on the server.
This enables the files more easy to be managed, backed-up and protected. There is a down side to, if the server manages to break up, and then the whole network can be damaged. Hardware components UTP Cable A UTP is a cable. The term UTP means (unshielded twisted pair).
This is a very common LAN cable.
This is used mainly for local area networks, because it does not cost very much. The cables itself has two unshielded wires twisted around each other. A UTP cable does not have a high bandwidth. Also it is not protected from an interface as well as a coaxial cable or fibre optic cables do, but it is cheap and easier to work with. Fibre optic cables A fibre optic cable has very fine fibre of glass or plastic. The size of the glass core is about fifty micrometers in diameter, which is shielded by glass “optical cladding.” The data is transmitted through the threads and then the data is modulated with light waves.
The Essay on Local Area Networks Lan Lans Computer
LANs: Local Area Networks Local Area Networks also called LANs have been a major player in industrialization of computers. In the past 20 or so years the worlds industry has be invaded with new computer technology. It has made such an impact on the way we do business that it has become essential with an ever-growing need for improvement. LANs give an employer the ability to share information ...
Fibre optic cables are better than normal metal communication lines as they have a greater bandwidth, which means they can transmit more data by having more space to carry the data. The data can be sent digitally not jus analogically. Jus as the fibre optic has all these good advantages it also has got a disadvantage, which is they cost too much. Besides that the fibre optic cables are very popular, so that’s why most telephone companies are having fibre optic cables fitted.