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2021 Dec 642-980 brain dumps

Q1. 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 


Q2. Which three commands will show all the MAC addresses learned from remote sites in an OTV overlay? (Choose three.) 

A. show otv arp-nd-cache 

B. show otv route overlay 

C. show otv vlan 

D. show ip arp 

E. show mac address-table 

F. show otv site 

Answer: ABE 


Q3. When using a Cisco Nexus 5500 and Cisco Nexus 7000 Series Switch, how can a port channel interface be configured? 

A. Layer 3 interface 

B. Layer 3 interface in non-admin VDC only 

C. Layer 3 interface in admin VDC only 

D. Layer 3 interface in VDC 1 only 

Answer: A 


Q4. 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. 

Answer: A 


Q5. 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 


Updated 642-980 exam answers:

Q6. Which three statements are true regarding trunking on an ISL between two switches in order for the VSAN to be trunked? (Choose three.) 

A. The VSAN must be defined on both switches. 

B. The VSAN must be on the VSAN allowed list. 

C. All VSANs that are being trunked must be using either enhanced or non-enhanced mode zoning, but not both. 

D. IVR must be configured for Cisco Fabric Services. 

E. The device alias database must successfully merge. 

F. There cannot be any duplicate domain IDs within an individual VSAN. 

Answer: ABF 


Q7. 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 


Q8. Which statement is true regarding FHRP considerations for an OTV network? 

A. VRRP is recommended over HSRP or GLBP. 

B. Using an AED eliminates the need for FHRP. 

C. FHRP should be limited to only the internal OTV interfaces. 

D. Filtering FHRP across the OTV network is recommended to avoid a suboptimal path due to the election of a single default gateway. 

Answer: D 


Q9. There is an ARP storm in VDC 1. Some users on VDC 2 notice that ARP is not resolving for their gateway on the Cisco Nexus core. What is the cause? 

A. The ARP CoPP class committed information rate is exceeded, resulting in ARP loss in all VDCs. 

B. The administrator has not correctly configured the ARP CoPP class in VDC 2. 

C. The ARP traffic in VDC 1 is copied to the host ports in VDC 2, causing overutilization and output discards. 

D. Because the ARP process in the default VDC (VDC 1) is responsible for processing ARP traffic for all VDCs, VDC 2 will be affected. 

Answer: A 


Q10. When configuring LLDP on Cisco Nexus 5548 Switch, what is the purpose of LLDP hold time global configuration command? 

A. LLDP holdtime option is to set the length of time in milliseconds that a device should save LLDP information received before discarding it 

B. LLDP holdtime option is to set the length of time in seconds that a device should save LLDP information received before discarding it 

C. LLDP holdtime option to is the length of time in milliseconds to wait before performing LLDP initialization on any interface 

D. LLDP holdtime option to is the length of time in seconds to wait before performing LLDP initialization on any interface 

Answer: B