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Home Cisco® 600-660

Cisco® 600-660 Exam Practice Questions (P. 1)

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Question #1

Refer to the exhibit. How is the ARP request from VM1 forwarded when VM2 is not learned in the Cisco ACI fabric?
  1. A
    Leaf 101 forwards the ARP request to one of the proxy VTEP spines.
  2. B
    POD1 spine responds to the ARP request after the POD1 COOP is updated with the VM2 location.
  3. C
    Leaf 101 encapsulates the ARP request into a multicast packet that is destined to 225.0.37.192.
  4. D
    Leaf 101 switch consumers the ARP reply of VM2 to update the local endpoint table.

Correct Answer:
A

Question #2
Which approach does Cisco ACI use to achieve multidestination packet forwarding between leaf switches in the same fabric?
  1. A
    Map VXLAN VTEP to the multicast group
  2. B
    Map VXLAN to PIM-SM protocol
  3. C
    Map VXLAN VNI to the multicast group
  4. D
    Map VXLAN to PIM-DM protocol

Correct Answer:
C

Question #3
What does the VXLAN source port add to the overlay packet forwarding when it uses the hash of Layer 2, Layer 3, and Layer 4 headers of the inner packet?
  1. A
    ECMP
  2. B
    TCP optimization
  3. C
    disabled fragmentation
  4. D
    jumbo frames

Correct Answer:
A
Reference:
https://www.cisco.com/c/en/us/support/docs/lan-switching/vlan/212682-virtual-extensible-lan-and-ethernet-virt.html

Question #4
Which two actions are the Cisco best practices to configure NIC teaming load balancing for Cisco UCS B-Series blades that are connected to the Cisco ACI leaf switches? (Choose two.)
  1. A
    Create vPC+
  2. B
    Enable LACP active mode
  3. C
    Create PAgP
  4. D
    Create vPC
  5. E
    Enable MAC pinning

Correct Answer:
BE

Question #5

An organization migrates its virtualized servers from a legacy environment to Cisco ACI. VM1 is incorrectly attached to PortGroup IT|3TierApp|Web. Which action limits IP address learning in BD1?
  1. A
    Enable Enforce Subnet Check
  2. B
    Enable Rouge Endpoint Control
  3. C
    Enable GARP-based EP Move Detection Mode
  4. D
    Disable Remote EP Learn

Correct Answer:
C

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