单项选择题heCiscoNexus1000VSeriesSwitchesarevirtualmachineaccessswitchesthatareanintelligentsoftwareswitchimplementationforVMwarevSphereenvironmentsrunningtheCiscoNX-OSSoftwareoperatingsystem.TogetherwiththeVMwareESXhypervisor,theNexus1000VsupportsCiscoVN-Linkservervirtualizationtechnology,whichprovidesmobilevirtualmachinesecurityandnetworkpolicyforVMwareViewcomponents,includingtheDHCPsnoopingfeature.DHCPsnoopingisdisabledontheNexus1000Vbydefault.WhentheDHCPsnoopingfeatureisenabledontheNexus1000V,whatarethedefaulttrustsettingsforthevEthernetanduplinkports?()
A. All vEthernet ports are trusted, and all Ethernet ports such as uplinks and port channels are trusted.
B. All vEthernet ports are not trusted, and all Ethernet ports such as uplinks and port channels are not trusted.
C. All vEthernet ports are trusted and all Ethernet ports such as uplinks and port channels are not trusted.
D. All vEthernet ports are not trusted and all Ethernet ports such as uplinks and port channels are trusted.