Cisco Cisco Certified Specialist 300-630 Questions & Answers

• Question 11:

  Which action reduces the impact on workload when migrating from the existing Cisco NX-OS VXLAN network infrastructure to the Cisco ACI fabric?

  A. Disable bridge domain unicast routing while a default gateway is in VXLAN infrastructure

  B. Set the default gateway in the Cisco ACI and VXLAN fabrics

  C. Use ACI spines for the Cisco ACI and VXLAN fabrics

  D. Configure vPC between the standalone Nexus and the Cisco ACI leaf

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/migration_guides/migrating_existing_networks_to_aci.html#_Toc27467765

• Question 12:

  An engineer implements the Cisco ACI solution and needs to confirm that the leaf switch correctly learns the remote endpoint MAC. Which information must be included in the VXLAN packet that is received from the Cisco ACI spine for the Cisco ACI leaf to learn MAC as a remote endpoint?

  A. VRF

  B. application profile

  C. bridge domain

  D. EPG

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739989.html

• Question 13:

  A host that is connected to a Cisco ACI fabric leaf switch sends an ARP request. Which transmission method does the ingress switch use to send the ARP requests?

  A. anycast

  B. broadcast

  C. multicast

  D. unicast

  Correct Answer: D

  Reference: https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-application-centric-infrastructure-design-guide.html

• Question 14:

  An engineer is implementing the Cisco ACI fabric but is experiencing loops detected from endpoints. When the issue was investigated, it was discovered that the packets are received with the same source IP address but from different leaf switch ports. The engineer must prevent the issue from happening in the future and make sure that the port is brought back up if it was disabled due to the loop discovered. Which set of actions must be taken to meet these requirements?

  A. Enable the enforce endpoint check and set the Rouge EP detection interval

  B. Enable the rogue endpoint and set the Error Disabled Recovery Policy

  C. Enable the remote endpoint limit and set the Interface override

  D. Enable reverse path forwarding and set the Hold Interval

  Correct Answer: B

• Question 15:

  Refer to the exhibit.

  

  An engineer is configuring a vSwitch policy in the existing Cisco ACI fabric. The requirement is for the Cisco ACI leaf to learn individual MAC addresses from the same physical port. Which vSwitch policy configuration mode must be enabled to meet this requirement?

  A. MAC pinning

  B. MAC binding

  C. LACP passive

  D. LACP active

  Correct Answer: A

• Question 16:

  An engineer deployed a Cisco ACI fabric and noticed that the fabric learns endpoints from subnets that are not configured on a bridge domain. To meet strict security requirements, the engineer must prevent this behavior. Which action must be taken to prevent this behavior?

  A. Activate Enable Data Plane Endpoint Learning

  B. Implement Pervasive Gateway

  C. Configure Static Binding

  D. Enable Enforce Subnet Check

  Correct Answer: D

• Question 17:

  What are two characteristics of network-centric design in Cisco ACI? (Choose two.)

  A. There is open communication between EPGs

  B. EPGs are used for microsegmentation

  C. EPGs are different security zones

  D. Applications define the network requirements

  E. A bridge domain has one subnet and one EPG

  Correct Answer: BE

• Question 18:

  Cisco ACI fabric is migrated from network-centric mode to application-centric mode. What is possible in an application-centric design?

  A. remapping of VLAN pools

  B. migration of bare metal servers to virtual machines

  C. creation of additional EPGs under one bridge domain

  D. Cisco ACI VMM integration with hypervisors

  Correct Answer: C

• Question 19:

  What is a design implication for Cisco ACI using an application-centric approach?

  A. Multiple VLANs and/or multiple EPGs are under one bridge domain

  B. VLAN numbers are in the names of the bridge domain and EPG objects

  C. One EPG is mapped to multiple bridge domains

  D. One VLAN equals one EPG equals one bridge domain

  Correct Answer: C

• Question 20:

  What are two characteristics of Cisco ACI interaction with MSTP? (Choose two.)

  A. A Cisco ACI leaf flushes all local endpoints in the received EPG when an MSTP TCN frame is received.

  B. A static path binding is required for native VLAN to carry the MST BPDUs in existing EPGs.

  C. Mis-cabling protocol is used to snoop the MSTP TCN packets.

  D. A dedicated EPG must be created for the native VLAN ID with static bindings toward the MSTP-enabled switches.

  E. The PVST simulation must be configured on external network switches to support MSTP.

  Correct Answer: CD