642-980 Guide

Most recent 642-980 Exam Study Guides With New Update Exam Questions

Pass4sure offers free demo for 642-980 exam. "Troubleshooting Cisco Data Center Unified Fabric", also known as 642-980 exam, is a Cisco Certification. This set of posts, Passing the Cisco 642-980 exam, will help you answer those questions. The 642-980 Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco 642-980 exams and revised by experts!

Q21. Which statement is true regarding the admin VDC? 

A. All licensed features and feature sets must be enabled from the admin VDC. 

B. Fabric extenders connectedto the admin VDC must be statically pinned. 

C. Only the mgmt 0 interface is allocated to the admin VDC. 

D. All interfaces other than mgmt 0 are allocated to the default VDC. 

E. The admin context can only be created on Supervisor 2/2E. 

F. The admin VDC is a new feature in Cisco NX-OS version 6.0. 


Q22. 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. 


Q23. Which statement is true regarding LACP configuration? 

A. With LACP, you can bundle up to 16 interfaces in a channel group. 

B. LACP configuration is global and can be only configured by admin. 

C. After removing LACP configuration, you need to reboot the device. 

D. You can disable LACP while any LACP configurations are present. 


Q24. You receive a priority 1 trouble ticket that there is OSPF route instability in the data center core Cisco Nexus 7018 Switches. Which command is useful to help validate a theory that hello packets are being throttled? 

A. N7018# show class-map interface control-plane 

B. N7018# show policy-map interface control-plane 

C. N7018# show service-policy interface control-plane 

D. N7018# show copp status 

E. N7018# show copp statistics 

F. N7018# show control-plane class copp-system-class-critical 


Q25. Which statement is true regarding Cisco FabricPath? 

A. It is necessary to first install the Cisco FabricPath feature set in the default VDC. 

B. Cisco FabricPath is only available on Cisco Nexus 7010 Switches with the Supervisor 2 engine. 

C. Cisco FabricPath cannot be disabled explicitly for a specific VDC. 

D. If the Cisco FabricPath feature is not installed, the fabricpath keyword will be available in the feature-set command. 


Q26. Which two statements are true regarding vPC configuration? (Choose two.) 

A. With vPC, there are no blocked ports. 

B. vPC uses hash-based EtherChannel load balancing. 

C. There are STP-blocked redundant links. 

D. There is VLAN-based load balancing. 

E. There is higher oversubscription. 

Answer: AB 

Q27. Which two describe the correct requirements for non-disruptive IOS ISSU on Cisco Nexus 7000 Series Switches? (Choose two.) 

A. updated kickstart and system images must be staged in bootflash on single-supervisor switches 

B. updated kickstart and system images must be staged in bootflash on dual-supervisor switches 

C. low version skew 

D. dual supervisors 

E. clock synchronization 

Answer: CD 

Q28. Which three of these would cause two switch fabrics not to merge? (Choose three.) 

A. Two or more switches do not have at least one assigned domain ID in common. 

B. Two switches have different assigned VSANs on the connecting ports. 

C. Two switches have different assigned VLANs on the connecting ports. 

D. The static domain ID does not override the dynamic ID. 

E. The election of the static domain is only determined by the WWNs of the two switches. 

F. The physical connectivity between the two switches is not active. 

Answer: ABF 

Q29. What are the minimum number and maximum number of members that a SAN PortChannel can have? 

A. 1, 16 

B. 2, 16 

C. 1, 32 

D. 2, 32 

E. 1 minimum with no maximum 

F. 2 minimum with no maximum 


Q30. A customer calls you to report that it receives an error when entering the pinning max-links 4 command in FEX configuration mode on its Cisco Nexus 5596T Switch. Which of these is a likely cause for this condition? 

A. The FEX fabric interface is down. 

B. The transceiver is incorrect. 

C. A fabric interface is in a port channel. 

D. The fabric interface switchport mode is set to Access. 

E. Only two fabric interfaces are connected. 


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