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Implementing Cisco Application Centric Infrastructure (300-620 DCACI) Questions and Answers

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Viewing questions 61-70 out of questions

Questions # 61:

What must be configured to allow SNMP traffic on the APIC controller?

Options:

out-of-band management interface

contract under tenant mgmt

SNMP relay policy

out-of-band bridge domain

Answer

Explanation

To allow SNMP traffic on the APIC controller, a contract under tenant mgmt must be configured3.

Questions # 62:

A customer creates Layer 3 connectivity to the outside network. However, only border leaf switches start receiving destination updates to other networks from the newly created L3Out. The updates must also be propagated to other Cisco ACI leaf switches. The L3Out is linked with the EPGs via a contract. Which action must be taken in the pod policy group to accomplish this goal?

Options:

Apply a BGP route reflector policy.

Enable a COOP policy.

Configure an IS-IS policy.

Implement an access management policy.

Answer

Explanation

To ensure that destination updates from a newly created L3Out are propagated to all Cisco ACI leaf switches, a BGP route reflector policy should be applied. This policy allows the border leaf switches, which act as BGP route reflectors, to redistribute the learned routes to other leaf switches within the fabric1.

Questions # 63:

Which two types of interfaces are supported on border leaf switches to connect to an external router? (Choose two.)

Options:

subinterface with VXLAN tagging

subinterface with 802.1Q tagging

FEX host interface

out of band interface

Switch Virtual Interface

Answer

B, E

Explanation

On border leaf switches in Cisco ACI, the two types of interfaces supported to connect to an external router are subinterface with 802.1Q tagging and Switch Virtual Interface (SVI)7. These interfaces allow for the segmentation of traffic and the extension of Layer 2 and Layer 3 services to external networks7.

Questions # 64:

Refer to the exhibit.

Question # 64

The engineer is planning to configure in-band management for the Cisco ACI fabric. The goal is to allow the network operators to reach the Cisco APIC servers and fabric switches from the in-band network. Which configuration must be applied on the bridge domain to accomplish these goals?

Options:

Enable Unicast Routing. Configure a virtual IP address.

Enable Unicast Routing. Set scope to Advertised Externally.

Scope: Shared between VRF. Set the IP address as primary.

Make this IP address primary. Configure an L30ut for Route Profile.

Answer

Explanation

https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/application-policy-infrastructure-controller-apic/221867-configure-in-band-management-in-aci.html Scope - Choose according to the route leakage method you use. Here choose to use L3out, and then click Advertised Externally.

Questions # 65:

An engineer must advertise a bridge domain subnet out of the ACI fabric to an OSPF neighbor. Which two configuration steps are required? (Choose two.)

Options:

Configure Subnet scope to Advertised Externally

Add External Subnet for External EPG flag under External EPG.

Create Route Control Profile with the export direction under External EPG.

Add L30ut profile to the bridge domain using Associated L30uts section

Configure the Subnet under the EPG level.

Answer

A, D

Explanation

To advertise a bridge domain subnet out of the ACI fabric to an OSPF neighbor, the following configuration steps are required:

Configure Subnet scope to Advertised Externally: This step involves setting the scope of the subnet within the bridge domain to be advertised externally, which allows the subnet to be propagated to external routing entities3.

Add L30ut profile to the bridge domain using Associated L30uts section: This step involves associating the bridge domain with an L3Out profile, which is necessary for the bridge domain subnet to be advertised to OSPF neighbors4.

Questions # 66:

Where is the COOP database located?

Options:

leaf

spine

APIC

endpoint

Answer

Explanation

The COOP (Council Of Oracle Protocol) database is located on each spine switch within the Cisco ACI fabric. The COOP database is responsible for maintaining a consistent copy of endpoint address and location information across the fabric

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

Questions # 67:

Question # 67

Refer to the exhibit. An engineer configures communication between the EPGs in different tenants. Which action should be taken to create the subnet?

Options:

Change Scope to Shared between VRFs.

Leave Scope set to Private to VRF.

Add the L3Out for Route Profile value.

Change Scope to Advertised Externally.

Answer

Explanation

To configure communication between the EPGs in different tenants, the subnet scope should be set to “Shared between VRFs”. This allows the subnet to be shared across different VRFs, enabling communication between EPGs that are in different tenants but within the same VRF. By marking the subnet as shared, it becomes visible to other VRFs, which is necessary for inter-tenant communication1.

References :=

Learning ACI - Part 12: Inter-VRF and Inter-Tenant Communication

Questions # 68:

An engineer is extending an EPG out of the ACI fabric using static path binding. Which statement about the endpoints is true?

Options:

Endpoints must connect directly to the ACI leaf port.

External endpoints are in a different bridge domain than the endpoints in the fabric.

Endpoint learning encompasses the MAC address only.

External endpoints are in the same EPG as the directly attached endpoints.

Answer

Explanation

When extending an EPG out of the ACI fabric using static path binding, it is true that external endpoints are in the same EPG as the directly attached endpoints8. This means that traffic received on a statically bound leaf port with a specific VLAN ID is mapped to the EPG, and the same policies applied to directly attached endpoints are enforced on the external endpoints8.

Questions # 69:

An engineer must attach an ESXi host to the Cisco ACI fabric. The host is connected to Leaf 1 and has its gateway IP address 10.10.10.254/24 configured inside the ACI fabric. A new wall is attached to Leaf 2 and mapped to the same EPG and BD as the ESXi host. The engineer must migrate the gateway of the ESXi host to the firewall. Which configuration set complishes this goal?

Options:

Disable unicast routing.

Configure IP address 10.10.10.254/24 on the ACI BD.

Enable unicast routing.

Configure IP address 10.10.10.254/24 on the ACI EPG.

Disable unicast routing.

Define IP address 10.10.10.254/24 on the firewall.

Enable unicast routing.

Set IP address 10.10.10.254/24 on the firewall.

Answer

Questions # 70:

What is a characteristic of a Cisco ACI Multi-Pod?

Options:

It eliminates the need to deploy multicast in the Layer 3 network that interconnects the pods.

Spines use BGP peering with IPN to send out the TEP pool prefix for the local pod.

It manages the configuration of different Cisco ACI pods using a single common Cisco APIC cluster.

A VPNv4 address family is used to exchange endpoint information between spines.

Answer

Explanation

In a Cisco ACI Multi-Pod architecture, multiple pods (each with its own leaf-and-spine topology) are interconnected via an Inter-Pod Network (IPN). The key characteristic of the Multi-Pod setup is that it is managed as a single fabric by a single APIC cluster, simplifying operations and maintaining consistency across all pods.

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