多项选择题
A.the table of 4096 elements that map the respective VLAN to STP instance number
B.VTP version
C.configuration revision number
D.native VLAN ID
单项选择题 Multicastisbeingdeployedinthenetwork，andonlyippimsparse-densemodehasbeenconfiguredonallinterfacesinthenetworktosupportanewvideostreamingapplication.Noothermulticastconfigurationwasappliedanywhereinthenetwork.Sinceenablingmulticast，thenetworkmonitoringtoolsshowperiodic spikesinlinkutilizationthroughoutthenetwork，eveninareaswherethevideoapplicationisnotbeingused.Whatcouldbeapossiblecause？（）
单项选择题 WhichconfigurationwouldmakeanIPSLAprobeuseaprecedencevalueof5？（）
单项选择题 YouarethenetworkadministratorofanenterprisecompanythatjustdeployedaglobalIPtelephonyenvironment.Inordertoguaranteegoodvoicequality，youaskedyourprovidertoimplementQoSonthe CEroutersofyourMPLSnetwork.OnyourLAN，youhavealsodeployedQoS.Users，however，keepcomplainingaboutbadvoicequality，andtheproviderdoesnotseematchesonthe DSCPvaluesthatyouhaveaskedhimtomatchupon.Whatismostlikelytheproblem？（）