Type And Topology Of Lan

In the early years of the internet, large scaled groups of computer were a bit of an issue, it was a pain to manage computers in respects to the communication between all the clients inside that group. Not only was it inevitable that businesses would require many more computers in their offices but it was also inevitable that the demand for this was going to increase both in and out of the work place. Initially the main driving at the time for Local area networking was so that people in the same

A LAN is a ‘Local Area Network’. It is a small network of computers most often

Non Conductive: A serious concern with outdoor cables in certain computer networks is they can be hit by lightning, causing destruction to wires and other cables that are involved in the network. Fiber optic cables can be made non-conductive by avoiding metal in their design. These kinds of cables are economical and standard for many indoor applications. Outdoor versions are more expensive since they require the special strength members, but they can still be valuable in eliminating ground loop and protecting electromagnetic equipment from surge damage.

It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart. In a typical LAN configuration, one computer is designated as the file server. It stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. Computers connected to the file server are called workstations. The workstations can be less powerful than the file server, and they may have additional software on their hard drives. On many LANs, cables are used to connect the network interface cards in each computer; other LANs may be wireless.

Coaxial cable uses a single conductor in the middle of a cable and the central conductor is surrounded by an insulator which is called the dielectric. Coax cables have become obsolete. Unshielded twisted pair cabling, also known as UTP cabling, has become the most common used network cabling. UTP cabling consists of four twisted pairs of wire, which have a different number of twists per foot, all encased on one sheath. This cabling is graded by different categories. Category 5 is recommended for Ethernet speeds of 100 Mbps. Category 5e, for running gigabit Ethernet or 1000BaseT networks. Category 6 and Category 6a are used to give better performance at higher speeds. Fiber optic cable is wave guided or light guided because it guides the light waves along the length of the cable. Single mode fiber optic cable can operate over long distances. Because fiber allows one mode of light to propagate, light pulses put on the fiber keep their shape much longer. This allows the light pulses to travel much further without interfering with other

A Star topology is the second type of topology represented. This topology is easy to install as well as being easy to expand by connecting additional nodes or devices. Faults are easily detected and parts are easy to remove. In a Start topology, when devices need to be added or removed, it does not cause disruptions to the network. This type of topology is used for many different applications, ranging from small to large networks. (FCIT, Univ. of Florida)

The work that will be performed will include the design and installation of a fully switched star network. This includes the installation and setup of all the network devices, cabling and interfaces but may be limited to workstations, devices, servers, switches, routers, racks and all related software.

LANs standards and protocols are Ethernet, IEEE 802.2 [IEEE 802.3, 100BaseT, Token Ring/IEEE 802.5 and FDDI.

Bus – All computers and devices are connected asynchronous to one linear cable known as a trunk or generally known as a backbone. each ends of the trunk should be terminated to prevent the signal from bouncing duplicate the cable. as a result of the network

Write a short explanation (two to three sentences) of each concept and be prepared to discuss it with the class.

These extend from the TC and travel horizontally along walls, ceilings, or floors to the LAN work area.

When the first computers were made, they couldn’t talk to each other if they weren’t the same type. But now with the standardising of components, it is now easier than ever for different computers to connect to each other in a LAN (Local Area Network).

In this topology, a single cable is used to connect all the nodes/devices on the network. This cable is also called the network backbone. The

Build up a database of potential, current and past customers and keep in touch with them on a regular basis (about every four to six months). Write personally to potential customers (this is known as a direct mail shot) and, if possible, address the letter to a specific person. Avoid long letters and use any excuse to make contact: special offers, low quarterly-rates, new facilities or services you have introduced and so forth. Include your brochure and name card and forward a calendar or sticker with your telephone number on it at Christmas time.

Describe the primary types and uses of twisted-pair cables Describe the primary types and uses of coaxial cables Describe the primary types and uses of fiber-optic cables Describe the primary types and uses of wireless media Compare and contrast the primary types and uses of different media