Companies Organizational Structure closely affects the design and implementation of a network and its design. Businesses must consider many differen

The cabling used to connect the network PC’s, servers, hubs etc can prove to be a quite expensive part of the installation, mainly due to the quantity required. It is therefore important to make the right selection. There are three main types of media connection available: Twisted pairs (shielded and unshielded), Co-axial cable, and Fiber optic cable. Co-axial cable is used primarily for low noise applications. Fiber optic and shielded twisted pair cables have a higher resistance to RFI (radio frequency interference) and are generally used in RF hostile environments, a factor which makes them more expensive. However for most businesses the standard (and more cost effective) unshielded twisted pair cable will be adequate as most of the business operates in a relatively low RF environment.

A Proxy Server Fire Wall can be used to provide Internet security a local network functions as normal but is separated from the Internet by a barrier created by the firewall. This helps to protect network resources from unauthorized use, and to prevent personnel, security and other commercially sensitive data from being accessed or transmitted without authorization.(How Firewalls …) Also with proxy servers can be statistically analyzed and monitored, thus enabling the administrator to tailor the network profile to the needs of the users.

• Investigate internet technology.

Networks enable devices, which are geographically distant to be connected. For example, a user will wish to have the ability to data to a printer. Printers can be very expensive especially if they are color printers, it would be more cost effective to share this resource this can be achieved by interconnecting all the devices requiring access to the shared resource via a network.

A local area network (LAN) is a network which covers limited area and which generally provides a high data rate capability. A LAN is invariably confined to a single site (i.e., building or group of buildings) and provides for the exchange of information and efficient use of shared resources. In general a LAN should conform to a well defined international standard, support a high data rate (typically 1 to 10 Mbps), have a maximum range of typically at least 500m but in some cases up to 10Km, be capable of supporting a variety of hardware independent devices, provide high standards of reliability and data integrity, exhibit minimal reliance on centralized components and controlling elements, maintain performance under conditions of high loading, allow easy installation and expansion, readily permit maintenance, reconfiguration and expansion.

Disadvantages : “Most expensive topology, Failure of one computer may impact others and Complex.” (Frick)

A star topology is one in which a central unit provides a link through which a group of smaller computers and devices is connected. In the star network, all interactions between different computers in the network travel through the host computer. The central unit will poll each to decide whether a unit has a message to send. If so, the central computer will carry the message to the receiving computer.

Some topics in this essay:
Ring Ring, Fire Wall, SYSTEM NOS, Security File, Local Networks, Summary Organizational, Overview Networks, Organizational Structure, Access Rights, CSMA/CD CSMA/CD, operating system, local network, network operating system, file server, network connected, token ring, station transmit, cisco press, networks provide, network resources, network operating, server local network, cisco press station, local network lan, servers central servers,