Cisco Cisco Certified Specialist 300-630 Questions & Answers

• Question 41:

  An engineer configures a Cisco ACI Multi-Pod for disaster recovery. Which action should be taken for the new nodes to be discoverable by the existing Cisco APICs?

  A. Enable subinterfaces with dot1q tagging on all links between the IPN routers.

  B. Configure IGMPv3 on the interfaces of IPN routers that face the Cisco ACI spine.

  C. Enable DHCP relay on all links that are connected to Cisco ACI spines on IPN devices.

  D. Configure BGP as the underlay protocol in IPN.

  Correct Answer: B

• Question 42:

  How is broadcast forwarded in Cisco ACI Multi-Pod after ARP flooding is enabled?

  A. For the specific bridge domain, all spines forward the broadcast frames to IPN routers

  B. Broadcast frames are forwarded inside the pod and across the IPN using the multicast address that is associated to the bridge domain

  C. Within a pod, the ingress leaf switch floods the broadcast frame on all fabric ports

  D. Ingress replication is used on the spines to forward broadcast frames in the IPN infrastructure

  Correct Answer: A

• Question 43:

  An engineer designs a Cisco ACI Multi-Pod solution that requires a pair of active-standby firewalls in different pods for external connectivity. How should the firewalls be implemented?

  A. PBR for routed firewalls

  B. separate L3Out peerings for routed firewalls

  C. routed firewall for the default gateway

  D. transparent firewalls

  Correct Answer: D

  Reference: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739571.html

• Question 44:

  An organization expands a Cisco ACI Multi-Pod from two to six pods and must ensure that the control plane scales. What should be configured in the IPN to ensure that BUM traffic is forwarded efficiently across the IPN?

  A. spine headend replication

  B. BIDIR-PIM

  C. MP-BGP

  D. MSDP

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-737855.html

• Question 45:

  

  Refer to the exhibit. Which configuration mode must be selected for the VMM vSwitch Port Channel policy to avoid MAC flapping on the Cisco UCS Fls and Cisco ACI leaf switches?

  A. LACP Passive

  B. MAC Pinning

  C. LACP Active

  D. Static Channel ?Mode On

  Correct Answer: B

• Question 46:

  A cloud provider must make a pair of firewalls available to all tenants. Each tenant defines its own service graph. Where should the Layer 4 to Layer 7 service be configured to accomplish this goal?

  A. management tenant

  B. infrastructure tenant

  C. user tenant

  D. common tenant

  Correct Answer: C

• Question 47:

  

  Refer to the exhibit. A customer experiences resource overconsumption on one of its border leaf switches. Which action should be taken to reduce the consumption on this switch?

  A. Disable VRF Policy Control Enforcement

  B. Disable IP Data Plane Learning

  C. Migrate L3Outs to another switch

  D. Disable Remote EP Learning

  Correct Answer: B

• Question 48:

  Which feature should be disabled on a bridge domain when a default gateway for endpoints is on an external device instead of a Cisco ACI bridge domain SVI?

  A. unicast routing

  B. ARP flooding

  C. unknown unicast flooding

  D. proxy ARP

  Correct Answer: C

• Question 49:

  

  Refer to the exhibit. Which configuration must be implemented to allow intra-VRF transit routing between the two external routers?

  A. Deploy both areas under the same L3Out policy

  B. Change one of the areas to area 0

  C. Configure OSPF virtual links

  D. Modify L3Out 1 to use the same OSPF area as L3Out 2

  Correct Answer: A

• Question 50:

  

  Refer to the exhibit. The 0.0.0.0/0 is configured as a default static route on L3Out-1. Which action should be taken for the 0.0.0.0/0 prefix to advertise out on L3Out-2 OSPF?

  A. Enable Shared Security Import Subnet

  B. Enable Aggregate Export Subnet

  C. Enable Shared Route Control Subnet

  D. Enable Export Route Control Subnet

  Correct Answer: B