單項選擇題What is the use of ERSPAN on N1kv？（）  

A. Send monitored traffic to a VLAN
B. Send monitored traffic to a remote VEM over L2
C. Receive monitored traffic on a vEthernet interface
D. Send monitored traffic to an IP destination


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1.多項選擇題Which statements are valid for a local SPAN configuration？ （）

A. Source and destination interface must be on the same host
B. Source and destination interfaces can be on different hosts
C. Destination vEthernet interface can be on a different VLAN than the source
D. Destination interface can be a physical port
E. Destination interface cannot be a physical port

3.多項選擇題

A customer would like to monitor traffic that is being sent to a specific virtual machine named VM001 using SPAN. The customer has another virtual machine configured as a sniffer host called VM002. What configuration is required， and what other changes will need to be made？ （）
VSM-PRI-188# sh int vethernet 5 
Vethernet5 is up 
Port description is VM001， Network Adapter 2 
 
HardwarE. Virtual， address： 0050.56b0.001e （bia 0050.56b0.001e） 
Owner is VM "VM001"， adapter is Network Adapter 2 
Active on module 5  
VMware DVS port 484  
Port-Profile is VM-vlan-10  
Port mode is access 
   
 
VSM-PRI-188# sh int vethernet 6  
Vethernet6 is up 
Port description is VM002， Network Adapter 1 
HardwarE. Virtual， address： 0050.56b0.0020 （bia 0050.56b0.0020） 
Owner is VM "VM002"， adapter is Network Adapter 1 
Active on module 5  
VMware DVS port 485  
Port-Profile is VM-vlan-10  
Port mode is access 
 
  

A. Monitor session 1 type span       Source interface veth5 both      Destination interface veth6      No shut
B. monitor session 1      source vlan 10      destination interface veth6      no shut
C. monitor session 1 type er-span      source interface vlan 10      destination ip 10.1.1.10      no shut
D. VM002 must be removed from the Nk1V
E. Move VM002 to Module 5
F. Restart the VEM on module 5

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

A. validates DHCP messages received from untrusted sources and filters out invalid response messages from DHCP servers
B. intercepts all ARP requests and responses on untrusted ports
C. builds and maintains the DHCP snooping binding database， which contains information about untrusted hosts with leased IP addresses
D. uses the DHCP snooping binding database to validate subsequent requests from untrusted hosts
E. limits IP traffic on an interface to only those sources that have an IP-MAC address binding table entry or static IP source entry

6.多項選擇題What are the four vPath packet flow steps？ （）

A. perform flow lookups
B. intercept packets on service enabled ports
C. run packets through the vPath flow manager
D. classify the packets
E. flow manager emits an action for the packets
F. enforce the action determined by the flow manager

8.單項選擇題When using VSD， traffic flow goes from the virtual machine to which of these？（）

A. Upstream switch
B. Virtual Supervisor Module
C. VMware distributed switch
D. VMware vSwitch
E. Service virtual machine

9.單項選擇題he Cisco Nexus 1000V Series Switches are virtual machine access switches that are an intelligent software switch implementation for VMware vSphere environments running the Cisco NX-OS Software operating system. Together with the VMware ESX hypervisor， the Nexus 1000V supports Cisco VN-Link server virtualization technology， which provides mobile virtual machine security and network policy for VMware View components， including the DHCP snooping feature. DHCP snooping is disabled on the Nexus 1000V by default. When the DHCP snooping feature is enabled on the Nexus 1000V， what are the default trust settings for the vEthernet and uplink ports？（） 

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.

10.多項選擇題

n1kv-l3（config）# show lacp offload status  
Current Status ： Enabled  
Running Config Status ： Enabled  
Saved Config Status ： Disabled 
What two facts does the output signify？ （）

A. LACP is enabled on the Nexus 1000v.
B. LACP will be offloaded to the upstream switch.
C. LACP will be negotiated to the VM.
D. LACP is negotiated by the VSM.
E. LACP is negotiated by the VEM in all instances.

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