Exam Code: 642-980 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Troubleshooting Cisco Data Center Unified Fabric
Certification Provider: Cisco
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2021 Dec 642-980 torrent

Q31. Which statement is true regarding STP? 

A. When the spanning-tree topology is calculated based on default parameters, the path between the source and destination end stations in a switched network might not be ideal. 

B. The path between the source and the destination end stations is always ideal with the default spanning-tree parameter. 

C. The path between the source and the destination end stations is determined by the speed of the link; the slowest link speed will become the root port during the election. 

D. The path between the source and the destination end stations is determined by the lowest MAC address; the lowest MAC address will become the root port during the election. 

Answer: A 


Q32. You have upgraded your Cisco Nexus 7009 Switches and converted the default VDC to an admin VDC. You notice that all of the ACLs are still present on the admin VDC after the conversion. What should you do? 

A. enable configuration synchronization between the admin VDC and the production VDCs 

B. delete the ACLs 

C. delete all ACLs except those related to CoPP 

D. delete all ACLs except those bound to resource templates 

E. use the system admin-vdc acl command to properly migrate ACLs 

Answer: B 


Q33. Which statement would explain why the overlay interface on an OTV edge device is not in the up state? 

A. The site identifiers are identical within a multihomed site. 

B. Multicast groups are not mapped to a range of SSM addresses to carry the multicast traffic. 

C. An adjacency server is not configured for connectivity over a multicast transport. 

D. The OTV IS-IS metrics do not match across all adjacent OTV edge devices. 

Answer: B 


Q34. On the secondary vPC switch, under which circumstance does the vPC autorecovery feature not bring up the vPC member ports? 

A. Peer link fails, and subsequently, the peer-keepalive link fails. 

B. Peer link is up, and the peer-keepalive link fails. 

C. Both vPC peers are reloaded, and the primary does not come back up. 

D. Peer link fails, and subsequently, the primary switch fails. 

Answer: B 


Q35. Which command is critical in order for OTV edge devices to maintain an overlay adjacency with their local peers in a multihomed site via the join interfaces across the Layer 3 network domain? 

A. otv site-identifier 

B. otv extend-vlan 

C. otv site-vlan 

D. otv use-adjacency-server unicast-only 

Answer: A 


Replace 642-980 free question:

Q36. A customer reports that it cannot establish a vPC peer link between two Cisco Nexus 5548UP Switches. The interfaces on both switches are configured and cabled correctly. The interface status is up/down on switch 1 and up/up on switch 2. Which three steps are taken to isolate the root cause? (Choose three.) 

A. ask the customer if the link was ever functional 

B. determine whether the fiber-optic cable type (single mode or multimode) matches the X2 modules 

C. swap the fiber-optic cable with one known to be good 

D. swap the transceivers between the two interfaces 

E. swap the ends of the fiber-optic cable 

Answer: CDE 


Q37. Refer to the exhibit. 

A customer is having problems with NPV. Which of these is the cause of the problem? 

A. No server was requested or received by the FLOGI database. 

B. One external link must be up for server interface to be up. 

C. Internal links are down and must be up for the server interface to be up. 

D. VSANs are misconfigured on the upstream ports. 

E. VLANs are misconfigured on the upstream ports. 

Answer: D 


Q38. While the Nexus 7010 switches are configured with vPC, the Nexus 5000 switch connections to each Nexus 7010 are configured as regular port-channels. Which statement best describes the problem affecting the port channel on N5K1? 

A. LACP is not configured to initiate negotiations. 

B. N5K1 must also be configured with vPC. 

C. load-balancing is not configured correctly on N5K1. 

D. The remote ends of the port-channel on N5K1 cannot use the same interface 

Answer: D 

Explanation:

The remote ends of the port-channel on N5K1 cannot use the same interface.

If you look at the remote ends and issue the “show interface port-channel, you will see thatonly one physical interface is assigned to the port channel.


Q39. Refer to the exhibit. 

The server port connected to the NPV edge switch does not come online. Which action should fix the problem? 

A. Move the NP ports on the NPV edge and the F ports on the NPIV into the same VSAN 

99. 

B. Move the NP ports on the NPV edge and the F ports on the NPIV in the default VSAN 1. 

C. Move all the ports into VLAN 1. 

D. Move all the ports into VSAN 99. 

E. Move all the ports into VLAN 99. 

Answer: A 


Q40. Fibre Channel traffic on VSAN 12 between N5K2 and MDS9124-2 is degraded. Which statement explains the cause of this degradation? 

A. Performance is decreased by half due to the incorrect port type being used. 

B. The load-balancing scheme for VSAN 12 should be src-id/dst-id. 

C. B2B credits on N5K2 should be increased to 128. 

D. A VSAN port channel must be configured between N5K2 and MDS9124-2. 

Answer: D