Two advantages for full mesh over shared medium Two disadvantages for full mesh over shared medium. Outline...

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Electrical Engineering

Two advantages for full mesh over shared medium Twodisadvantages for full mesh over shared medium.
Outline what a MAC protocol is and why it is used for sharedmedium case

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What is Mesh TopologyA mesh topology is a network topology in which all the networknodes are individually connected to most of the other nodes Thereis not a concept of a central switch hub or computer which acts asa central point of communication to pass on the messagesUnlike other network topologies it can be divided into twokindsFully connected mesh topology andPartially connected mesh topologyA fully connected mesh topology has all thenodes connected to every other node If you know the graph theorythen it is like a fully connected graph where all the nodes areconnected to every other nodeOn the other hand a partially connected meshtopology does not have all the nodes connected to eachotherAdvantages of mesh topologyEach connection can carry its own data loadIt is robustA fault is diagnosed easilyProvides security and privacyDisadvantages of mesh topologyInstallation and configuration are difficult if theconnectivity gets moreCabling cost is more and the most in case of a fully connectedmesh topologyBulk wiring is requiredMedium Access Control MAC The Medium Access Control MACprotocol is used to provide the data link layer of the Ethernet LANsystem The MAC protocol encapsulates a SDU payload data byadding a 14 byte header Protocol Control Information PCI beforethe data and appending an integrity checksum The checksum is a4byte 32bit Cyclic Redundancy Check CRC after the data Theentire frame is preceded by a small idle period the minimuminterframe gap 96 microsecond S and a 8 byte preambleincluding the start of frame delimiterPreambleThe purpose of the idle time before transmission starts is toallow a small time interval for the receiver electronics in each ofthe nodes to settle after completion of the previous frame A See Answer

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