Cisco Implementing Cisco Application Centric Infrastructure - Advanced 300-630 DCACIA Exam Questions

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Total 119 questions
Question 1

Refer to the exhibit.

The requirement Is to prefer the local PBR node and redirect the traffic to the remote pod PBR node in the case of catastrophic node failure. Which configuration meets these requirements?



Answer : D

The correct configuration to prefer the local Policy-Based Routing (PBR) node and redirect traffic to the remote pod PBR node in case of catastrophic failure is option D: location-based PBR, host route advertisement, and node tracking. Location-based PBR allows for the selection of a preferred path based on the location of the traffic source or destination. Host route advertisement enables specific routing information to be propagated throughout the network, which can be used to influence traffic flow. Node tracking provides a mechanism to monitor node status and reroute traffic if a node becomes unavailable due to failure.Reference:= ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )


Question 2

Refer to the exhibit.

How is the ARP request from VM1 forwarded when VM2 is not learned in the Cisco ACI fabric?



Answer : A

In a Cisco ACI environment, when an ARP request is initiated by VM1 for VM2 and VM2 is not known within the ACI fabric, the leaf switch (Leaf 101) will forward the ARP request to a spine switch that acts as a proxy VTEP. The spine switch will either respond to the ARP request if it knows VM2's location through the COOP database or will flood the ARP request within the fabric if VM2's location is unknown.Reference: Implementing Cisco Application Centric Infrastructure Official Cert Guide


Question 3

An engineer created a Cisco ACI environment in which multiple tenants reuse the same contract. The requirement is to prevent inter-tenant communication. Which action meets this requirement?



Answer : A

To prevent inter-tenant communication while reusing the same contract, the contract should be created in the user tenant with the scope set to VRF and then exported to other tenants. This approach allows the contract to be shared across tenants while maintaining the isolation of each tenant's VRF.By setting the scope to VRF, the contract's policies apply only within the context of the specified VRF, thus preventing communication between tenants5678.


Question 4

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



Answer : A

Migrating from Cisco NX-OS VXLAN to Cisco ACI fabric involves several considerations to minimize impact on workloads. Disabling bridge domain unicast routing while the default gateway remains in the VXLAN infrastructure ensures that the migration does not disrupt the existing traffic flow.This approach allows for a smoother transition by maintaining the current routing paths until the migration is complete123.


Question 5

What is a use of the Overlay Multicast TEP in Cisco ACI Multi-Site communication?



Answer : B

The Overlay Multicast TEP in Cisco ACI Multi-Site communication serves as the source IP for BUM traffic, which includes Broadcast, Unknown unicast, and Multicast traffic. This is crucial for efficient replication of BUM traffic across different sites.


Question 6

A Cisco ACI fabric Is configured with these settings:

* A single VRF exists that contains 100 EPGs.

* EPGs 1 to 50 must be permitted to communicate.

* EPGs 51 to 100 must NOT be allowed to communicate with EPGs 1 to 50.

* EPG 51 must be allowed to communicate with EPG 10.

Which two actions must be taken to accomplish these requirements? (Choose two.)



Answer : B, E

To meet the requirements specified, two actions must be taken: B. Create a standard contract between EPG 51 and EPG 10 to explicitly allow communication between these two EPGs. A contract in Cisco ACI defines the communication policy between EPGs, and by creating a standard contract, specific communication can be permitted. E. Enable the Preferred Group option on EPGs 1 to 50 to allow communication within this group of EPGs. The Preferred Group feature in ACI allows all EPGs within the group to communicate with each other without the need for explicit contracts, while still enforcing contracts for communication with EPGs outside the group.Reference:= Implementing Cisco Application Centric Infrastructure Official Cert Guide


Question 7

Refer to the exhibit.

An engineer must allow IP mobility between Site1 and Site2 in a Cisco Nexus Dashboard Orchestrator. The design must meet these requirements:

* A disaster recovery (DR) solution must exist between the sites that do not require vMotion support

* The application must be started at a DR site without having to re-IP the application servers

* The solution must avoid any broadcast storms between the sites.

Which two actions meet these criteria? (Choose two.)



Answer : D, E

The L2 Stretch feature allows for the extension of a Layer 2 network across multiple sites without changing the IP addressing scheme, which satisfies the requirement for starting an application at a DR site without re-IPing servers. Disabling inter-site BUM (Broadcast, Unknown unicast, and Multicast) traffic prevents broadcast storms between sites while still allowing IP mobility, meeting both specified criteria.Reference:= (Implementing Cisco Application Centric Infrastructure Official Cert Guide)


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Total 119 questions