DHCP snooping on Cisco Nexus 1000V Series Switches acts like a firewall between untrusted hosts and trusted DHCP servers by doing which of these？ （）

Nexus# sh ip igmp snooping vlan 120   IGMP Snooping information for vlan 120   IGMP snooping disabled   Optimised Multicast Flood （OMF） disabled   IGMP querier none  Switch-querier enabled， address 1.1.1.1， currently not running  IGMPv3 Explicit tracking enabled  IGMPv2 Fast leave disabled  IGMPv1/v2 Report suppression enabled  IGMPv3 Report suppression disabled  Link Local Groups suppression enabled  Router port detection using PIM Hellos， IGMP Queries  Number of router-ports： 0  Number of groups： 0   Active ports： Po100 Po111  Which statement best describes what is depicted in the show command output？（）

Nexus# conf t  Enter configuration commands， one per line. End with CNTL/Z.  Nexus（config）# interface Loopback10  % Permission denied  Nexus（config）# ？  no Negate a command or set its defaults  username Configure user information.  end Go to exec mode  exit Exit from command interpreter  What is the reason why this user is not able to enter configuration commands？（）

Traffic drop for FCoE is experienced across a Nexus 5548 switch. What is a possible cause？（）

Which two statements about VACLs on Cisco Nexus 7000 Series Switches are true？ （）

On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（）  switch# config terminal  switch（config）# mac address-table learning-mode conversational vlan 1-10  switch（config）#   

With Cisco NX-OS on a Cisco Nexus platform， which command shows memory usage， total processes， and CPU state？（）

Which two statements about the Cisco Nexus 1000V VSM are true?（）

Refer to the exhibit. The Cisco Nexus 100v in the VMware vSphere solution effectively creates an additional accesslayer in the virtualized data center network， which of the following 1000v characteristics can thedesigner take advantage of？（）

How many VSM modes are there in a Cisco Nexus 1000V environment？（）