SimpleNetworkManagementProtocol(SNMP)isanInternetStandardprotocolforcollectingandorganizinginformationaboutmanageddevicesonIPnetworksandformodifyingthatinformationtochangedevice(请作答此空).SNMPisacomponentoftheInternetProtocolSuiteasdefinedbytheInternet()TaskForce.SNMPoperatesinthe()layeroftheInternetprotocolsuite.AllSNMPmessagesaretransportedviaUser()Protocol.AnSNMP-managednetworkconsistsofthreekeycomponents:a)Manageddevices,b)()(i.e.，softwarewhichrunsonmanageddevices),andc)Networkmanagementstation(NMS)(i.e.，softwarewhichrunsonthemanager).
A.behavior B.configuration C.performance D.status正确答案B
