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Computer meshwork Modifications.Regional Offices.Existing Bus Topology (hubs) should be replaced with admirer topographic anatomy using transmutationes. In star analysis situs, all devices are committed to a common of import location, typically a hub or a switch, in this case we will be using switches. (See diagram 1) when a customer sends data to the exchange location, the central device retransmits the information and sends it to the destination. Because all cabling is machine-accessible to the central device , if one link fails, only that portion of the web will fail. The rest of the net profit will not be affected. However, if the central throw fails the entire network will fail. A star topology can have a maximum of 1024 nodes on a local area network and is commonly employ for 10BaseT. (IEEE 802.3) and 100BaseTX (IEEE 802.3u) Ethernet.The advantages of using a Star Topology embroil reliableness and ease of maintenance and installation. Monitoring and troubleshootin g can be keep at the central device, providing easier maintenance. A Star topology allows for greater reliability because each node is connected to the central devise by a segment. If one segment breaks, only that node loses access to the network so the rest of the network is not affected. Because each node is connected to the central device, star topologies also allow for an easy network layout, providing the network executive director easier installation oer the other topologies.The disadvantage of this topology is cost. With each devise being connected to the central location, more cabling is required than with other topologies. In addition there is a cost of the central device.This is a local area network topology in which end poses on a network are connected to a common central switch by organize to point links. A ring topology that is organised as a star implements a unidirectional closed loop star, instead of point to point links.(Diagram 1 Star Toplogy)Star topology is th e most widely used models in networking and are extremely stableBy using Assymetric switches (10/100) over the existing CAT 5 UTP cabling.CAT 5 UTP can mollify up to 100MB/SSwitches have many benefits. A LAN switch allows many users to communicate in parallel through the use of virtual(prenominal) circuits and dedicated network segments in a collision free environment. This maximises the bandwidth handiness on the shared medium. Also, moving to a switched LAN environment is truly cost effective because you can reuse the existing hardware and cabling. The cater of the switch combined with the software to configure LANs gives network administrators greater flexibility in managing the network.