Cisco 642-980 Online Practice Questions and Exam Preparation

Cisco 642-980 Online Questions & Answers

• Question 61:

  

  

  It has been determined that unknown unicast, multicast, and broadcast traffic is not correctly being switched through either Nexus 7010 switch. Which statement best describes the cause of this issue?

  A. No VLANs are allowed across the vPC peer link.
  B. The MST STP is not enabled on either switch.
  C. The default VLAN is inactive.
  D. VTP is not configured to handle this type of traffic.
  B. The MST STP is not enabled on either switch.

• Question 62:

  

  Cisco UCS users residing behind N5K2 are complaining about poor performance with a single LAN application in the data center.Which statement best explains what is wrong with N5K2?

  A. Traffic balancing is based on the destination IP address.
  B. Port channel members do not have equal bandwidths.
  C. The trunk between the Nexus 5000 switches is filtering all VLANs.
  D. E2/1 on N7010-C2 is not configured as a trunk for application traffic from N5K2.
  A. Traffic balancing is based on the destination IP address.

• Question 63:

  What are the two most common causes of the "SFP validation failed" error on an interface when you attempt to connect aCisco Nexus 2148T Fabric Extender to aCisco Nexus 5548UP Switch? (Choose two.)

  A. The port must be in switchport monitor mode.
  B. It is a hardware limitation of the Cisco Nexus 2148T.
  C. The wrong speed is configured on the interface.
  D. The incorrect license has been applied on the Cisco Nexus 5548UP.
  E. The wrong switchport mode is configured on the interface.
  C. The wrong speed is configured on the interface.
  E. The wrong switchport mode is configured on the interface.

• Question 64:

  One of your Cisco Nexus Series interfaces has become errdisabled with the error message "DCX-No ACK in 100 PDUs". How often are these acknowledgements exchanged?

  A. 15 seconds
  B. 30 seconds
  C. 45 seconds
  D. 60 seconds
  B. 30 seconds

• Question 65:

  Refer to the exhibit.

  

  An administrator sets up a FabricPath network. The administrator tries to ping between two SVI interfaces on the leaf switches 10 and 20, but it fails. What caused the pings to fail?

  A. Switches S10 and S20 do not have F2 modules.
  B. The vPC peer gateway must be enabled on switches S10 and S20.
  C. Switches S1, S2, and S3 should be interconnected directly.
  D. VLAN 10 is not enabled on the spine switches (S1, S2, and S3).
  E. Layer 3 over a vPC+ peer link is not supported.
  D. VLAN 10 is not enabled on the spine switches (S1, S2, and S3).

• Question 66:

  Refer to the exhibit. Which two issues causeaproblemwith the implementation of an OTV between data centers? (Choosetwo.)

  

  A. incorrect control-group address
  B. incorrect data-group range
  C. overlapping control-group and data-ranges
  D. incorrect MTU
  E. incorrect IGMP version
  C. overlapping control-group and data-ranges
  E. incorrect IGMP version

• Question 67:

  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
  C. show interface Ethernet 100/1/10

• Question 68:

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

• Question 69:

  

  

  

  The Cisco Nexus 2248 FEX has been added recently to the network via a vPC to the Nexus 5000 switches; however, connectivity is not yet operational. What is the problem with the configuration?

  A. Both Nexus 5000 switches must associate to the same FEX number
  B. Each Nexus 5000 should have its own FEX to support a straight-through topology.
  C. The maximum number of links for pinning purposes should be increased to 2.
  D. Ethernet1/18 must be configured without a port channel.
  D. Ethernet1/18 must be configured without a port channel.

• Question 70:

  To ensure thatDCBX can be run on a switch, which other feature must be enabled?

  A. Cisco Discovery Protocol
  B. LLDP
  C. Fibre Channel
  D. IEEE 802.1ad
  B. LLDP