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2021 Mar 642-980 exam cram

Q1. Refer to the output. 

feature otv 

otv site-vlan 2 

otv site-identifier 256 

!

interface ethernet 2/0 

ip address 192.0.2.1/24 

ip igmp version 3 

! 

interface ethernet 2/1 

ip address 192.0.2.2/24 

ip igmp version 3 

! 

interface Overlay1 

otv control-group 239.1.1.1 

otv join-interface ethernet 2/0 

otv extend-vlan 3-100 

! 

interface Overlay2 

otv control-group 239.1.1.1 

otv join-interface ethernet 2/1 

otv extend-vlan 101-115 

Which command best represents where the control plane configurations are applied? 

A. switch(config-if-overlay)# otv isis hello-interval 30 

B. switch(config-if)# otv isis hello-interval 30 

C. switch(config-vlan)# otv isis hello-interval 30 

D. switch(config)# otv isis hello-interval 30 

Answer: A 


Q2. 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 


Q3. Which statement is true regarding how OTV edge devices will react based on the configuration of the VLANs being extended across the overlay network? 

A. Any VLANs not extended will not be populated in the local OTV route table. 

B. Only the same-site edge AED device controls which VLANs are to be extended. 

C. Any extended VLANs will not be populated in the remote OTV route table. 

D. By default, all VLANs on an edge device will be extended. 

Answer: A 


Q4. 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. 

Answer: C 


Q5. Refer to the exhibit. 

Customer encounters the problem as shown in the exhibit. What 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. Multiple external links must be up for the server to come up. 

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

Answer: A 


Latest 642-980 exam cram:

Q6. 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 


Q7. 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: A 


Q8. A customer is troubleshooting FCoE in its network. They have discovered that vFC is currently down and there is no active STP port state on the bound Ethernet interface. What should the STP port state be to correct this issue? 

A. The bound interface should be in an STP forwarding state for the native VLAN only. 

B. The bound interface should be in an STP learning state for both the native VLAN and the member FCoE VLAN that is mapped to the active VSAN. 

C. The bound interface should be in an STP forwarding state for both the native VLAN and the member FCoE VLAN that is mapped to the active VSAN. 

D. The bound interface should be in an STP blocking state for both the native VLAN and the member FCoE VLAN that is mapped to the active VSAN. 

Answer: C 


Q9. Refer to the exhibit. 

A customer is having difficulty getting NPV working. What is the cause of the problem? 

A. The core NPV device is not enabled. 

B. The core NPV device is not a switch. 

C. The core NPV device is not configured on both ends. 

D. The core NPV device is not configured on the upstream port. 

Answer: B 


Q10. If no traffic was ever sent across the overlay, what will the show mac address-table command on the OTV VDC indicate? 

A. invalid command 

B. the MAC address of the local OTV join interface 

C. the system IDs of all the local OTV edge devices 

D. the system IDs of all the local and remote edge devices in the overlay 

E. all the MAC addresses learned on the extended VLAN 

Answer: B