Exploration_Network_Chapter_7.ppt

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1、OSIDataLinkLayerNetworkFundamentals–Chapter7ObjectivesExplaintheroleofDataLinklayerprotocolsindatatransmission.DescribehowtheDataLinklayerpreparesdatafortransmissiononnetworkmedia.Describethedifferenttypesofmediaaccesscontrolmethods.Identifyseveralcommonlogicalnetworktopolog

2、iesanddescribehowthelogicaltopologydeterminesthemediaaccesscontrolmethodforthatnetwork.Explainthepurposeofencapsulatingpacketsintoframestofacilitatemediaaccess.DescribetheLayer2framestructureandidentifygenericfields.Explaintheroleofkeyframeheaderandtrailerfieldsincludingaddr

3、essing,QoS,typeofprotocolandFrameCheckSequence.DataLinkLayer–AccessingtheMediaDescribetheservicetheDataLinkLayerprovidesasitpreparescommunicationfortransmissiononspecificmediaDataLinkLayer–AccessingtheMediaDescribewhyDataLinklayerprotocolsarerequiredtocontrolmediaaccessDataL

4、inkLayer–AccessingtheMediaDescribetheroleofframinginpreparingapacketfortransmissiononagivenmediaDataLinkLayer–AccessingtheMediaDescribetheroletheDataLinklayerplaysinlinkingthesoftwareandhardwarelayersDataLinkLayer–AccessingtheMediaIdentifyseveralsourcesfortheprotocolsandstan

5、dardsusedbytheDataLinklayerMediaAccessControlTechniquesExplainthenecessityforcontrollingaccesstothemediaMediaAccessControlTechniquesIdentifytwomediaaccesscontrolmethodsforsharedmediaandthebasiccharacteristicsofeachMediaAccessControlTechniquesDefineFullDuplexandHalfDuplexasit

6、relatestoMediaAccessControlfornon-sharedmediaMediaAccessControlTechniquesDescribethepurposeofalogicaltopologyandidentifyseveralcommonlogicaltopologiesMediaAccessControlTechniquesContrastlogicalandphysicaltopologiesMediaAccessControlTechniquesIdentifythecharacteristicsofpoint

7、-to-pointtopologyanddescribetheimplicationsformediaaccesswhenusingthistopologyMediaAccessControlTechniquesIdentifythecharacteristicsofmulti-accesstopologyanddescribetheimplicationsformediaaccesswhenusingthistopologyMediaAccessControlTechniquesIdentifythecharacteristicsofring

8、topologyanddescribetheimplicationsformediaaccesswhenusingthistopologyMediaA