多項選擇題Which two are benefits of using remote AAA services for Cisco Nexus products？ （）

A. They make it easier to manage user logins and passwords across devices.
B. They enable automated configuration backup for devices.
C. They centrally manage user attributes and permissions.
D. Local console access is never included in AAA and can be used for access when the AAA servers are down.


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1.單項選擇題Which description is correct for a private VLAN community port with respect to Layer 2 communications？（）   

A. It communicates with all other community ports in the private VLAN domain.
B. It communicates with only isolated ports in the private VLAN domain.
C. It communicates only with other community ports in the same community and associated promiscuous ports.
D. It communicates only with associated promiscuous and isolated ports.

2.單項選擇題

After configuring FabricPath， the following appears in the syslog： 
%STP-2-L2GW_BACKBONE_BLOCK： L2 Gateway Backbone port inconsistency blocking port port-channel100 on VLAN0010. 
What is the cause of this message？ （）
 
   

A. STP must be disabled； message indicates that STP is enabled.
B. STP is misconfigured； root guard must be disabled.
C. An inferior BPDU is received on a Cisco FabricPath edge port.
D. A superior BPDU is received on a Cisco FabricPath edge port.

4.多項選擇題The hardware and software configurations for vPC+ are similar to that of traditional vPC. What are the differences in the configuration of vPC+？ （）

A. FabricPath switch ID must be configured under the vPC domain.
B. Virtual switch ID of vPC+ must be configured under FabricPath domain.
C. On Cisco Nexus 7000 Series Switch， F1 interfaces must be used as the vPC+ peer links.
D. The vPC+ peer link must be configured as a Cisco FabricPath core port （switchport mode fabricpath）.
E. FabricPath subswitch ID must be configured under the vPC domain.

5.多項選擇題Cisco NX-OS Software supports SNMPv1， SNMPv2c， and SNMPv3. Both SNMPv1 and SNMPv2c use a community-based form of security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting frames over the network. Which security features are provided in Cisco NX-OS SNMPv3？ （）

A. encryption—scrambles the packet contents to prevent them from being seen by unauthorized sources
B. password—a password （community string） sent in clear text between a manager and agent for added protection
C. authentication—determines that the message is from a valid source
D. message integrity—ensures that a packet has not been tampered with while it was in transit 
E. user—to determine if user authentication is used instead of community strings

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