Cisco 300-630 Online Practice Questions and Exam Preparation

Cisco 300-630 Online Questions & Answers

• Question 71:

  How does Cisco ACI manage the STP BPDUs between two pods?

  A. Cisco ACI spines perform ingress replication for STP BPDUs
  B. Cisco ACI spines suppress STP BPDUs to be forwarded to other pods
  C. BPDUs are forwarded over IPN using the bridge domain GIPo multicast address
  D. Special multicast group 239.255.255.255 is used to forward STP BPDUs
  C. BPDUs are forwarded over IPN using the bridge domain GIPo multicast address

• Question 72:

  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
  D. unicast

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

• Question 73:

  An engineer is deploying a Cisco ACI fabric and discovers that the traffic to certain endpoints is dropped. The originating bridge domain is configured with hardware proxy. Which action prevents this problem?

  A. Set the L2 Unknown Unicast option to Flood for Layer 2 switched traffic.
  B. Set the L2 Unknown Unicast option to Hardware-Proxy for Layer 2 switched traffic.
  C. Enable the ARP Flooding option under the bridge domain for Layer 3 routed traffic.
  D. Disable the ARP Flooding option under the bridge domain for Layer 3 routed traffic.
  A. Set the L2 Unknown Unicast option to Flood for Layer 2 switched traffic.

• Question 74:

  What is a characteristic of application-centric design in Cisco ACI?

  A. One-to-one mapping between EPGs and bridge domains Is enforced.
  B. A bridge domain has only one subnet.
  C. EPGs represent different application tiers.
  D. It simplifies gradual migration from a traditional network.
  C. EPGs represent different application tiers.

• Question 75:

  What is a characteristic of a stretched bridge domain solution between Cisco ACI sites with Layer 2 flood disabled?

  A. The application profile that is associated to the bridge domain have local significance in each site.
  B. The tenant and VRF that associated to the bridge domain have local significance in each site.
  C. Headend replication is used for BUM traffic between sites.
  D. IP mobility is ensured between sites for disaster recovery.
  D. IP mobility is ensured between sites for disaster recovery.

• Question 76:

  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?

  A. ECMP
  B. TCP optimization
  C. disabled fragmentation
  D. jumbo frames
  A. ECMP

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

• Question 77:

  Refer to the exhibit.

  

  Server S1 is load balancing traffic received from SIP1 to BC1 and BC2. The Cisco ACI fabric must learn the IP address of S1 and unlearn the BC1 and BC2 IP addresses. Which two actions must be taken to meet these requirements? (Choose two.)

  A. Check the Limit IP learning to subnet box.
  B. Disable IP data plane learning on EPG TLB
  C. Enforce subnet check globally.
  D. Suppress ARP response on BC1 and BC2.
  E. Create L4-L7 virtual IP of 10.14.2.7.
  A. Check the Limit IP learning to subnet box.
  D. Suppress ARP response on BC1 and BC2.

• Question 78:

  A Cisco ACI fabric is connected to a switched network that runs Spanning Tree Protocol on VLAN 101, VLANs 101, 102, and 103 are mapped to bridge domain BD10123. The leaf node that is attached to this switched network receives a Spanning Tree Protocol topology change notification. Which endpoints does ACI flush?

  A. all endpoints associated with VLAN 102 or 103 in BD10123 on the spine node
  B. all endpoints associated with VLAN 101 in BD10123 on the leaf node
  C. all endpoints associated with VLANs 101, 102, and 103 in BD10123
  D. all endpoints associated with VLAN 101 in BD10123
  B. all endpoints associated with VLAN 101 in BD10123 on the leaf node

• Question 79:

  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
  C. bridge domain

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

• Question 80:

  Which mechanism is used by ACI spine switches to maintain a consistent copy of the endpoint address and location information?

  A. COOP
  B. ISIS
  C. BD
  D. OSPF
  A. COOP