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Troubleshooting Cisco Data Center Unified Fabric Certification Exam

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November 21, 2024Last update

Cisco 642-980 Free Practice Questions

Q1. In order to fulfill the requirement to prevent the creation of end-to-end loops across a multihomed OTV network that connects two different data centers, what is the solution to this problem? 

A. prioritize the transmission of STP BPDUs across the overlay 

B. design the DCI connectivity as a hub and spoke 

C. define a conservative TTL for all packets traversing the OTV network 

D. enable AED on a per-VLAN basis between each OTV edge device with the same site ID 

Answer:

Q2. Which two commands can you issue on a Cisco Nexus 5548UP Switch to determine which interfaces are connected to fabric extenders? (Choose two.) 

A. show fex-fabric interface 

B. show fex 

C. show fex fex-id 

D. show fex interface 

E. show fex detail 

Answer: CE 

Q3. 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:

Q4. Refer to exhibit. 

Customer has a pair of Cisco Nexus7010s switches and connected to a single Cisco Nexus5548 switch via vPC. Customer has a combination of M1 and F1 I/O Modules in Cisco Nexus7010s. 

Why is the design described not supported? 

A. Mixing I/O Modules on the Same Side of a Peer Link is not supported 

B. vPC does not support split control plane 

C. You can not configure a vPC peer link to configure two devices as vPCs 

D. Need to add another Cisco Nexus5548 switch to the topology to make this work. 

Answer:

Q5. A customer is deploying multihop FCoE in its network. Which guideline must the customer follow with respect to VE ports to make this deployment possible? 

A. Auto mode on the vFC interface is supported. 

B. VE-port trunking is supported over FCoE-enabled VLANs. 

C. VE-port interface binding to MAC addresses is supported. 

D. A VE port is disabled for trunk mode by default. 

Answer:

Q6. You are no longer seeing updates to the device-aliases database on your Cisco Nexus 5596UP Switch. Which command is useful to determine if the scope of Cisco Fabric Services application distribution was being administratively limited? 

A. N5K2# show cfs region 

B. N5K2# show cfs scope 

C. N5K2# show cfs locale 

D. N5K2# show cfs acl 

E. N5K2# show cfs firewall 

Answer:

Q7. Refer to the exhibit. 

Customer is having problems with a device in VLAN100? What would fix the problem? 

A. Move the trunk port into VSAN 100. 

B. Change interface fc1fc1/1 into a trunk port and remove VSAN 100. 

C. Change interface fc2/4 into a trunk port. 

D. Change interface fc2/4 into VSAN 100. 

E. Change interface fc1fc1/2 into VSAN 100. 

Answer:

Q8. A customer reports that a 10-Gb interface between a Cisco Nexus 7009 Switch and a Cisco Nexus 5548UP Switch is not passing traffic. The Nexus 7009 interface indicates up/up. The Nexus 5548UP interface indicates up/down. Which feature should you enable to help isolate the root cause? 

A. CDP 

B. GOLD 

C. UDLD 

D. DAI 

E. LACP 

Answer:

Q9. What is one requirement for running FabricPath on a Cisco Nexus 7000 Series switches? 

A. You must have an F Series module 

B. You must run NX-OS version 4.2 to run FabrciPath 

C. ISSU needs to be disabled to run FabricPath 

D. LAN_TRANSPORT_SERVICES_PKG license needs to be installed to run FabrciPath 

Answer:

Q10. 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 

Q11. Refer to the exhibit. 

The customer informs you of a problem they are encountering. What is the cause of the problem? 

A. The core upstream switch does not have NPIV enabled. 

B. The downstream switch does not have NPIV enabled. 

C. NPIV has been disabled on all switches. 

D. NPIV has been configured but not enabled on the uplink port. 

Answer:

Q12. In a Cisco Data center network, what troubleshooting step would you do first when having a npv issue? 

A. Check to see if npv is enable 

B. Check name server database to see if it recognizes device 

C. Check detail config of FCNS database 

D. Check the show-tech-support detail 

Answer:

Q13. 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. 

Answer:

Q14. Which command on a Cisco Nexus 5000 Series Switch will show the interface information for port 10 on the connected FEX 100? 

A. show interface Ethernet 100/10 

B. show fex 100 interface Ethernet 1/10 

C. show interface Ethernet 100/1/10 

D. show interface Ethernet 1/100/10 

Answer:

Q15. Refer to the exhibit. 

A zone merge failure occurs with the above error log. What is the problem? 

A. Two switches have the same zone set name but different zone members. 

B. Two switches have different zone names and different members. 

C. Two switches have the same zone set name and the same members. 

D. Two switches have different zone names. 

Answer:

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