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Cisco 642-980 Troubleshooting Cisco Data Center Unified Fabric http://www.test4certification.com/642-980.html

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Question: 1 Which command would you use to find the AED of an extended VLAN in a dual-homed site of an OTV network? A. show otv aed on the AED B. show otv vlan on any edge devices in the site C. show otv vlan on the AED D. show otv aed on any edge devices in the site E. show otv site on any edge devices in the site

Answer: C Explanation: Reference: http://www.cisco.com/en/US/docs/ios-xml/ios/wan_otv/configuration/xe-3s/wan-otv-confg.html

Question: 2 Which statement is true regarding Cisco FabricPath? A. Cisco FabricPath cannot be disabled explicitly for a specific VDC. B. It is necessary to first install the Cisco FabricPath feature set in the default VDC. C. If the Cisco FabricPath feature is not installed, the fabric path keyword will be available in the featureset command. D. Cisco FabricPath is only available on Cisco Nexus 7010 Switches with the Supervisor 2 engine.

Answer: B Question: 3 Which statement is true regarding the admin VDC? A. Only the mgmt 0 interface is allocated to the admin VDC. B. All licensed features and feature sets must be enabled from the admin VDC. C. The admin VDC is a new feature in Cisco NX-OS version 6.0. D. Fabric extenders connected to the admin VDC must be statically pinned. E. The admin context can only be created on Supervisor 2/2E. F. All interfaces other than mgmt 0 are allocated to the default VDC.

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Answer: A Explanation: Reference: http://www.cisco.com/en/US/docs/switches/datacenter/sw/nxos/virtual_device_context/configuration/guide/vdc_admin.html (guidelines and limitations for creating admin VDCs, second bullet, second sentence)

Question: 4 Refer to the exhibit.

When suspending or deleting VSANs, which three statements are true? (Choose two.) A. You must wait 60 seconds after you enter the vsan suspend command before you enter another command. B. You can unsuspend only VSAN at a time. C. You can delete multiple VSANs as long as they are in the same domain. D. You can delete multiple VSANs as long as they are in the same zone. E. You must wait 120 seconds after you enter the vsan suspend command before you enter another command.

Answer: A, B Explanation: Reference: http://docwiki.cisco.com/wiki/Cisco_MDS_SanOS_Troubleshooting_Guide_-_Troubleshooting_VSANs,_Domains,_and_FSPF (initial troubleshooting checklist, see the note)

Question: 5 Refer to the exhibit.

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A customer is having problems with NPV. Which of these is the cause of the problem? A. One external link must be up for server interface to be up. B. VLANs are misconfigured on the upstream ports. C. No server was requested or received by the FLOGI database. D. VSANs are misconfigured on the upstream ports E. Internal links are down and must be up for the server interface to be up

Answer: D Question: 6 FHRP isolation between data center networks that are connected over an OTV network is a two-step process; the first prevents FHRP peering by filtering FHRP control packets across the overlay via a VLAN ACL. What is the second step? A. Disable the auto-population of the OTV MAC address table. B. Remove the FHRP VLAN from the OTV extend-vlan list. C. Apply a VLAN to a route map that is applied to the OTV routing process. D. Filter the FHRP MAC addresses that are being advertised by IS-IS.

Answer: C Explanation: Reference: http://jeffostermiller.blogspot.com/2013/01/fhrp-isolation-with-otv.html

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