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	HARDWARE: Topologies bus All nodes are connected to a single wire or cable (the bus) which has two endpoints. Each communications device on the network transmits electronic messages to other devices. If some of those messages collide, the sending device will wait and then try to transmit again. The advantage of bus network is that it is can be organized as a peer-to-peer network or client/server network. It is also relatively inexpensive to install. The disadvantage is that if the bus network fails, the whole system network fails. The wider the bus the better! ring The ring network is a network in which all communications devices and microprocessors are connected in a continuous loop. Electronic messages pass around the ring until they reach the correct destination; there is no central server. The advantage of a ring network is that messages only flow in one direction. The disadvantage is that if a single connection is broken, the whole network stops working. The distributed star or tree topology can provide many of the advantages of the bus and the star topologies. It connects workstations to a central point, called a hub. This hub can support several workstations or hubs which, in turn, can support other workstations. Distributed star topologies can be easily adapted to the physical arrangement of the facility site. (Integrated Publishing) star A network that links all microcomputer and other communication devices through a central server. The advantages of this hub is that it prevents impact between messages. The network forms a star shape having the central server in the middle with a single branch outward, the branch will not branch to another device. Other Advantages Include: * Good performance. * Scalable, Easy to set up and to expand. * Any non-centralised failure will have very little effect on the network, whereas on a ring network it would all fail with one fault. * Easy to detect faults * Data Packets are sent quickly as they do not have to travel through any unnecessary nodes. * It is used for centralised control. TRAVEL TO ROME Rome (Italian: Roma, Latin: Roma), capital of the world (Caput Mundi), the Eternal City (la Cittā Eterna), the city of the seven hills (la cittā dei sette colli) or simply the City (l'Urbe): enough reasons to visit and get impressed by the many, many historical sights. Smell ancient Rome in the middle of this cosmopolitan-crazy Italian capital. Rome is the country's largest and most populous city, with over 4 million residents! The old 'capital of the world' is thoroughly modern and cosmopolitan. As one of the few major European cities that escaped World War II relatively unscathed, central Rome remains essentially Renaissance and Baroque in character. The Historic Centre of Rome is listed by UNESCO as a World Heritage Site. For centuries, Rome has been the center of Western civilization, and is the seat of the Catholic Church. The State of the Vatican City, the sovereign territory of the Holy Sea is an enclave of Rome. Situated on the River Tiber, between the Apennine Mountains and the Tyrrhenian Sea, the "Eternal City" was once the administrative center of the mighty Roman Empire, governing a vast region that stretched all the way from Britain to Mesopotamia. Today, Rome is modern and cosmopolitan. It is the third most-visited tourist destination in Europe and a city of both cultural and political importance. Its international airport at Fiumicino is the largest in Italy; it hosts the head offices of the vast majority of the major Italian companies, as well as the headquarters of three of the world's 100 largest companies (Enel, ENI, Telecom Italia). For more travel suggestions, please visit www.toptenvacationspots.net.