You work as a network engineer for . You study the exhibit carefully.
 What best describes the Cisco IOS IP SLA command and output in the exhibit？（）

单项选择题You work as a network engineer for. You study the exhibit carefully. Which of these is true based upon the output shown in the command？（）  Exhibit：

A.The port has security enabled and has shut down due to a security violation.
B.The port is operational and has reached its configured maximum allowed number of MAC addresses.
C.The port will allow access for 11 MAC addresses in addition to the 3 configured MAC addresses.
D.If the number of devices attempting to access the port exceeds 11， the port will shut down for 20 minutes， as configured.

单项选择题Whichoftheseistrueregardingtheconfigurationandapplicationofportaccesscontrollists？（）

A.PACLs can be applied in the inbound or outbound direction of a Layer 2 physical interface. 
B.At Layer 2， a MAC address PACL will take precedence over any existing Layer 3 PACL.
C.When you apply a port ACL to a trunk port， the ACL filters traffic on all VLANs present on the trunk port.
D.PACLs are not supported on EtherChannel interfaces.

单项选择题WhenconfiguringprivateVLANs，whichconfigurationtaskmustyoudofirst？（）

A.Configure the private VLAN port parameters.
B.Configure and map the secondary VLAN to the primary VLAN.
C.Disable IGMP snooping.
D.Set the VTP mode to transparent.

多项选择题PrivateVLANScanbeconfiguredaswhichthreeoftheseporttypes？（）

A.isolated
B.protected
C.private
D.associated
E.promiscuous
F.munity

多项选择题Whatarethreeresultsofissuingtheswitchporthostcommand？（）

A.enables PortFast
B.disables trunking
C.disables Cisco Discovery Protocol
D.enables port security
E.enables loopguard
F.disables EtherChannel