多項(xiàng)選擇題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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1.單項(xiàng)選擇題When using Overlay Transport Virtualization (OTV), how do L2 multicast frames traverse the overlay?()

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

2.單項(xiàng)選擇題What is the default Time to Live (TTL) valuse in Cisco FabricPath?()

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

3.單項(xiàng)選擇題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.

4.單項(xiàng)選擇題

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.

5.單項(xiàng)選擇題What does the command "IP ARP synchronize" do in a vPC configuration?()

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

6.單項(xiàng)選擇題Which option describes the default roles available to RBAC on Cisco Nexus switches?()

A. admin, operator, network-admin, and network-operator
B. admin, read-only, network-admin, and network-operator
C. vdc-admin, vdc-operator, network-admin, and network-operator
D. vdc-admin, vdc-operator, network-admin, and network-operator (for Nexus 7000) and network- admin and network-operator (for other Nexus switches)
E. admin and read-only

7.單項(xiàng)選擇題How are IP multicast IGMP entries synchronized between vPC peers?()

A. IGMP is not synchronized between vPC peers
B. Cisco Fabric Service carries IGMP entries across the vPC peer link
C. IP ARP synchronization under the vPC domain configuration also synchronizes IGMP
D. IGMP is flooded to the L2 domain, and there is no need to synchronize it between vPC peers

8.單項(xiàng)選擇題Which statement describes OTV configuration on the Cisco Nexus 7000 Series Switches? ()

A. The OTV control-plane protocol uses the IS-IS protocol to establish adjacencies and exchange MAC reachability across the overlay network. You must enable IS-IS with the feature isis command before OTV adjacencies can be established.
B. OTV uses an SSM group range for neighbor discovery and to exchange MAC reachability with other OTV edge peers.
C. The OTV join interface is a routed uplink interface on the edge device used to physically join the overlay network.
D. The OTV internal interface encapsulates the site Layer 2 frames in IP unicast or multicast packets that are then sent to the other sites.

9.單項(xiàng)選擇題Cisco FabricPath uses what as a common bridge ID to connected Spanning Tree Protocol bridges? ()

A. C84C·75FA·6000
B. 01005·E11.·2FD
C. C84C·76FA·6000
D. 4000.0000.0001

10.單項(xiàng)選擇題Which statement describes the XML management interface in Cisco NX-OS Software?()

A.The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session  copy-config  delete-config  and edit-config
B.The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session  copy-config  edit-config  and kill-session
C.NX-OS Software supports up to a maximum of 16 concurrent XML sessions
D.Only show commands are supported via the XML management interface in NX-OS Software
E.The NX-OS implementation of the XML-based NETCONF requires SSH to be used for communication with the device


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