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WhichthreestatementsbestdescribemulticastoperationonCis……

Which three statements best describe multicast operation on Cisco Nexus switches in a data center？（）

A. Cisco NX-OS Software does not support PIM dense mode.
B. The command ip multicast-routing must be enabled in Cisco NX-OS Software before any multicast configuration is possible on the switch.
C. PIM CLI configuration and verification commands are not available until you enable the PIM feature with the feature pim command.
D. Cisco NX-OS Software supports multicast routing per Layer 3 VRF instance.
E. The default PIM operational mode on the Cisco Nexus 7000 switch is SSM.

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单项选择题WhenusingOverlayTransportVirtualization（OTV），howdoL2multicastframestraversetheoverlay？（）

A. The L2 multicast frames are encapsulated in an OTV packet using the configured control-group multicast address for transport
B. The L2 multicast frames are dropped because multicast cannot be carried across the overlay 
C. The L2 multicast frames are encapsulated in an OTV packet using the configured data-group multicast address for transport
D. The L2 multicast frames are forwarded natively across the overlay based on their multicast IDs

单项选择题WhatisthedefaultTimetoLive（TTL）valuseinCiscoFabricPath？（）

A. 128
B. 32
C. 64
D. Dependent on the number of switch IDs in the topology

单项选择题Whichstatementbestdescribeswhatisdepictedintheshowcommandoutput？（）

A. IGMP snooping is not active for VLAN 120 because the IGMP feature has not been enabled on the switch with the feature igmp command.
B. The IGMP snooping querier for VLAN 120 is not in a running state because the Loopback interface configured with 1.1.1.1/32 is currently in a down state.
C. IGMP snooping has been disabled on the VLAN 120 SVI.
D. IGMP snooping has been disabled for VLAN 120 in VLAN configuration mode.
E. IGMP snooping is not active for VLAN 120 because VLAN 120 does not exist in the VLAN database.

单项选择题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？（）

A. IGMP snooping is not active for VLAN 120 because the IGMP feature has not been enabled on the switch with the feature igmp command.
B. The IGMP snooping querier for VLAN 120 is not in a running state because the Loopback interface configured with 1.1.1.1/32 is currently in a down state.
C. IGMP snooping has been disabled on the VLAN 120 SVI.
D. IGMP snooping has been disabled for VLAN 120 in VLAN configuration mode.
E. IGMP snooping is not active for VLAN 120 because VLAN 120 does not exist in the VLAN database.

单项选择题Whatdoesthecommand IPARPsynchronize doinavPCconfiguration？（）

A. Synchronizes ARP entries between vPC peers every five minutes
B. Triggers a manual update of ARP entries from the primary peer to the secondary
C. Enables a bulk loading of ARP entries when a vPC peer is restored
D. Uses the peer-keepalive link to maintain ARP table consistency