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Assignment 2 First we contract (WAN ) ne devilrkThe topology engage in this network is (BusNetwork Topology )this type of topologies connects apiece calculating machine (nodes to a single segment trunk (a communication marge , typically coax cable that is referred to as the bus . The signaling travels from adept end of the bus to the a nonher(prenominal) . A terminator is demand at individually to absorb the signal so as it does not reflect back across the bus . A media accession method called CSMA /MA is used to handle the impact that breathe when two br signals placed on the fit at the same time . The bus topology is resistless . In new(prenominal) words , the reckoners on the bus merely listen for a signal they are not responsible for despicable the signal along and it has an important advantage that the Fail ure of sensation of the come in does not affect othersIn each branch thither is (LANS ) computer network with it s own and separate database , so we need two (LANs ) networks and only one (WAN networkThe first company attached with the blurb company via frame relay with different speeds fit in to the pressure of the workFrame relay lines machine-accessible with others via DTU (data transmission unitTwo companies can connected each other with a router resided in one of them ( chief(prenominal) companyEach sub-networks in the network can connected via switchesWe also need main(prenominal) router to connect two (LANs ) networksWe moldiness(prenominal) use (transmission control protocol\IP ) protocol . TCP /IP assigns a unique number to every workstation in the world . This IP number is a quad byte honour that , by convention , is expressed by converting each byte into a decimal number (0 to 255 ) and separating the bytes with a period . For slip , the PC Lube and Tune server is 130 .132 .59 .

234Three pieces of knowledge must be requiredThe IP mete out assigned to each personal computerThe part of the IP manoeuvre (the subnet mask ) that distinguishes other machines on the same LAN (messages can be stake to them directly ) from machines in other departments or elsewhere in the world (which are sent to a router machineThe IP address of the router machine that connects this LAN to the rest of the world ( HYPERLINK http /network .yale .edu /pclt / causation .HTM H Gilbert ,2004The required bandwidth for this network must beDial-up modem : 56Kbps or ADSL 256KbpsISDN : 128KbpsT-1 : 1 .54MbpsEthernet : 10MbpsFast Ethernet : 100MbpsGigabit Etherne t : 1000MbpsEthernet , Fast Ethernet , and Gigabit Ethernet connections are Full duplex flat . This means they can maneuver AND receive data at the listed speed simultaneously . So in reality you could place 20Mbps of data using a 10Mbps internet connection if you were send and receiving at in effect(p) capacity (Jon Daniels ,2005All servers must be connected in the main company (main branchMain ServerLife Insurance ServerExchange ServerNet Center (used for employees data backupBackup server (used as a failover server via CA finish availability software for the main...

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