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Computer Network Modifications.Regional Offices.Existing spate Topology (hubs) should be replaced with mastermind analysis situs utilize switches. In star topology, all devices are attached to a common rally 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 telephone exchange location, the central device retransmits the information and sends it to the destination. Because all cabling is connected to the central device , if oneness link fails, lonesome(prenominal) that portion of the earnings will fail. The rest of the communicate will not be affected. However, if the central devise fails the entire network will fail. A star topology apprize lose a maximum of 1024 nodes on a LAN and is commonly used for 10BaseT. (IEEE 802.3) and 100BaseTX (IEEE 802.3u) Ethernet.The advantages of using a flair Topology include reliability and ease of tutelage and installation. Monitoring and troubleshooting can be maintained at the central device, providing easier maintenance. A Star topology waives 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 administrator easier installation over the new(prenominal) 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 LAN topology in which endpoints on a network are connected to a common central switch by point to point links. A ring topology that is organised as a star implements a unidirectional unopen loop star, instead of point to point links.(Diagram 1 Star Toplogy)Star topology is the most widel y used models in networking and are extremely stableBy using Assymetric switches (10/100) over the existing CAT 5 UTP cabling.CAT 5 UTP can accommodate up to 100MB/SSwitches have many benefits. A LAN switch allows many users to communicate in parallel through the use of virtual circuits and dedicated network segments in a collision free environment. This maximises the bandwidth availability on the shared medium. Also, base to a switched LAN environment is very cost effective because you can reuse the existing hardware and cabling. The power of the switch combined with the software package to configure LANs gives network administrators greater flexibility in managing the network.