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Implementing Cisco Application Centric Infrastructure (DCACI) Question and Answers

Implementing Cisco Application Centric Infrastructure (DCACI)

Last Update May 1, 2024
Total Questions : 192

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Questions 1

New ESXi hosts are procured in a data center compute expansion project. An engineer must update the

configuration on the Cisco APIC controllers to support the addition of the new servers to the existing VMM

domain. Which action should be taken to support this change?

Options:

A.  

Create a range of internal VLANs in the associated VLAN pool.

B.  

Set the encapsulation mode as VXLAN.

C.  

Enable infrastructure VLAN in the associated AEP.

D.  

Map the leaf interface selector to the AEP that is associated with the VMM domain.

Discussion 0
Questions 2

Which endpoint learning operation is completed on the egress leaf switch when traffic is received from an L3Out?

Options:

A.  

The source MAC and IP address of the traffic is learned as a local endpoint.

B.  

The source MAC address of the traffic is learned as a remote endpoint.

C.  

No source MAC or IP address of the traffic is learned as a remote endpoint.

D.  

The source IP address of the traffic is learned as a remote endpoint.

Discussion 0
Questions 3

An engineer must perform a Cisco ACI fabric upgrade that minimizes the impact on user traffic and allows only permitted users to perform an upgrade. Which two configuration steps should be taken to meet these requirements?

Options:

A.  

Divide Cisco APIC controllers into two or more maintenance groups.

B.  

Grant tenant-ext-admin access to a user who performs an upgrade

C.  

Combine all switches into an upgrade group.

D.  

Divide switches into two or more maintenance groups.

E.  

Grant the fabric administrator role to a user who performs an upgrade.

Discussion 0
Questions 4

A customer must deploy three Cisco ACI based data centers. Each site must be separated from the others. Which characteristic of Cisco ACI Multi-Pod makes it unsuitable for this deployment?

Options:

A.  

creates a virtual pod in the remote location

B.  

requires all pods to share the same Cisco APIC cluster

C.  

has distance and scale limitations

D.  

places leaf switches in the remote site that belong to the same fabric as at the headquarters site

Discussion 0
Questions 5

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:

A.  

Apply a BGP route reflector policy.

B.  

Enable a COOP policy.

C.  

Configure an IS-IS policy.

D.  

Implement an access management policy.

Discussion 0
Questions 6

Which description regarding the initial APIC cluster discovery process is true?

Options:

A.  

The APIC uses an internal IP address from a pool to communicate with the nodes.

B.  

Every switch is assigned a unique AV by the APIC.

C.  

The APIC discovers the IP address of the other APIC controllers by using Cisco Discovery Protocol.

D.  

The ACI fabric is discovered starting with the spine switches.

Discussion 0
Questions 7

What two actions should be taken to deploy a new Cisco ACI Multi-Pod setup? (Choose two.)

Options:

A.  

Configure MP-BGP on IPN routers that face the Cisco ACI spines.

B.  

Connect all spines to the IPN.

C.  

Configure anycast RP for the underlying multicast protocol

D.  

Configure the TEP pool of the new pod to be routable across the IPN.

E.  

Increase interface MTU for all IPN routers to support VXLAN traffic.

Discussion 0
Questions 8

What is the minimum number of APICs does Cisco recommend to deploy in a production cluster?

Options:

A.  

1

B.  

3

C.  

4

D.  

5

Discussion 0
Questions 9

When a pre-provision immediacy is used, when is the policy downloaded to the Cisco ACI leaf switch?

Options:

A.  

The policy is downloaded and programmed in the hardware policy CAM when the change is implemented on the Cisco APIC.

B.  

The policy is programmed in the hardware policy CAM when the policy is downloaded in the leaf software.

C.  

The policy is programmed in the hardware policy CAM when the first packet is received through the data path.

D.  

The policy is downloaded to the associated leaf switch software when the ESXi host is attached to a DVS.

Discussion 0
Questions 10

Which routing protocol is supported between Cisco ACI spines and IPNs in a Cisco ACI Multi-Pod environment?

Options:

A.  

OSPF

B.  

ISIS

C.  

BGP

D.  

EIGRP

Discussion 0
Questions 11

A Cisco ACI is integrated with a VMware vSphere environment. The port groups must be created automatically in vSphere and propagated to hypervisors when created in the ACI environment. Which action accomplishes this goal?

Options:

A.  

Associate the VMM domain with the EPGs that must be available in vCenter.

B.  

Assign the uplinks of the ESXi hosts to the vDS that the APIC created.

C.  

Configure contracts for the EPGs that are required on the ESXi hosts.

D.  

Create the port groups on the vCenter that reflect the EPG names in the APIC.

Discussion 0
Questions 12

The company’s Cisco ACI fabric hosts multiple customer tenants. To meet a service level agreement, the company is constantly monitoring the Cisco ACI environment. Syslog is one of the methods used for monitoring. Only events related to leaf and spine environmental information without specific customer data should be logged. To which ACI object must the configuration be applied to meet these requirements?

Options:

A.  

access policy

B.  

infra tenant

C.  

switch profile

D.  

fabric policy

Discussion 0
Questions 13

Which two actions extend a Layer 2 domain beyond the ACI fabric? (Choose two.)

Options:

A.  

extending the routed domain out of the ACI fabric

B.  

creating a single homed Layer 3 Out

C.  

creating an external physical network

D.  

extending the bridge domain out of the ACI fabric

E.  

extending the EPG out of the ACI fabric

Discussion 0
Questions 14

An engineer must advertise a selection of external networks learned from a BGP neighbor into the ACI fabric. Which L3Out subnet configuration option creates an inbound route map for route filtering?

Options:

A.  

External Subnets for the External EPG

B.  

Shared Route Control Subnet

C.  

Import Route Control Subnet

D.  

Shared Security Import Subnet

Discussion 0
Questions 15

In the context of VMM, which protocol between ACI leaf and compute hosts ensures that the policies are pushed to the leaf switches for immediate and on demand resolution immediacy?

Options:

A.  

VXLAN

B.  

LLDP

C.  

ISIS

D.  

STP

Discussion 0
Questions 16

A packet is routed between two endpoints on different Cisco ACI leaf switches. Which VXLAN VNID is applied to the packet?

Options:

A.  

FD

B.  

EPG

C.  

VRF

D.  

BD

Discussion 0
Questions 17

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?

Options:

A.  

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

B.  

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

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.

Discussion 0
Questions 18

An engineer is implementing a connection that represents an external bridged network. Which two configurations are used? (Choose two.)

Options:

A.  

Layer 2 remote fabric

B.  

Layer 2 outside

C.  

Layers 2 internal

D.  

Static path binding

E.  

VXLAN outside

Discussion 0
Questions 19

When Cisco ACI connects to an outside Layers 2 network, where does the ACI fabric flood the STP BPDU frame?

Options:

A.  

within the bridge domain

B.  

within the APIC

C.  

within the access encap VLAN

D.  

between all the spine and leaf switches

Discussion 0
Questions 20

An engineer is extending EPG connectivity to an external network. The external network houses the Layer 3 gateway and other end hosts. Which ACI bridge domain configuration should be used?

Options:

A.  

Forwarding: Custom

L2 Unknown Unicast: Hardware Proxy L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Enabled

B.  

Forwarding: Custom

L2 Unknown Unicast: Flood

L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Enabled

C.  

Forwarding: Custom

L2 Unknown Unicast: Hardware Proxy L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Disabled

D.  

Forwarding: Custom

L2 Unknown Unicast: Flood

L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Disabled

Discussion 0
Questions 21

A network engineer configures the Cisco ACI fabric to connect to vCenter with these requirements:

Port groups must be automatically created on the distributed virtual switch.

Port groups must use the VLAN allocation in the range between 20-30.

The deployment must optimize the CAM space on the leaf switches.

Which set of actions meets these criteria?

Options:

A.  

Create a dynamic VLAN pool with the VLAN range of 20-30.

Create a VMM domain and associate it with the VLAN pool.

Create the EPG and associate the domain.

Set the deployment immediacy to On Demand.

B.  

Create a dynamic VLAN pool with the VLAN range of 20-30.

Create a physical domain and associate it with the VLAN pool.

Create the EPG and associate the domain.

Set the deployment immediacy to On Demand.

C.  

Create a static VLAN pool with the VLAN range of 20-30.

Create a physical domain and associate it with the VLAN pool.

Create the EPG and associate the domain.

Set the deployment immediacy to Immediate.

D.  

Create a static VLAN pool with the VLAN range of 20-30.

Create a VMM domain and associate it with the VLAN pool.

Create the EPG and associate the domain.

Set the deployment immediacy to Immediate.

Discussion 0
Questions 22

An engineer is troubleshooting fabric discovery in a newly deployed Cisco ACI fabric and analyzes this output:

Which ACI fabric address is assigned to interface lo1023?

Options:

A.  

Dynamic tunnel endpoint

B.  

Physical tunnel endpoint

C.  

Fabric tunnel endpoint

D.  

VXLAN tunnel endpoint

Discussion 0
Questions 23

Refer to the exhibit. Which two configurations enable inter-VRF communication? (Choose two.)

Options:

A.  

Set the subnet scope to Shared Between VRFs.

B.  

Enable Advertise Externally under the subnet scope.

C.  

Export the contract and import as a contract interface.

D.  

Change the contract scope to Tenant.

E.  

Change the subject scope to VRF.

Discussion 0
Questions 24

The company ESXi infrastructure is hosted on the Cisco UCS-B Blade Servers. The company decided to take advantage of ACI VMM integration to enable consistent enforcement of policies across virtual and physical workloads. The requirement is to prevent the packet loss between the distributed virtual switch and the ACI fabric. Which setting must be implemented on a vSwitch policy to accomplish this goal?

Options:

A.  

Static Channel

B.  

MAC Pinning

C.  

LACP

D.  

LLDP

Discussion 0
Questions 25

An engineer must securely export Cisco APIC configuration snapshots to a secure, offsite location The exported configuration must be transferred using an encrypted tunnel and encoded with a platform-agnostic data format that provides namespace support Which configuration set must be used?

Options:

A.  

Option A

B.  

Option B

C.  

Option C

D.  

Option D

Discussion 0
Questions 26

What is MP-BGP used for in Cisco ACl fabric?

Options:

A.  

MP-BGP VPNv4 AF is used to propagate L3Out routes that are received from a border leaf to the fabric.

B.  

MP-BGP VPNv4 AF is used between spines in an ACI Multi-Pod fabric to propagate the endpoint

C.  

MP-BGP VPNv4 AF is used as protocol on L3Out between a border leaf and an external router

D.  

MP-BGP Layer 2 VPN EVPN AF is used to propagate L30ut routes that are received from a border leaf.

Discussion 0
Questions 27

Refer to the exhibit. The Cisco ACI fabric has an egress L3Out from Leaf-101 and Leaf-102 to CORE-1. VLAN 102 is used to form the OSPF adjacency. The workloads must be migrated into EPG-101, and the static port binding is configured to Leaf-103 e1/1 with encap VLAN 101. An engineer completes the port binding and receives an MCP fault. Which action clears the fault?

Options:

A.  

Use VLAN 101 for OSPF adjacency on the egress L3Out.

B.  

Use VLAN 102 as the encap VLAN on the EPG-101 static port binding.

C.  

Add VLAN 102 to the VLAN pool that is used by the static port binding.

D.  

Prune VLAN 101 from the VLAN pool that is used by the egress L3Out.

Discussion 0
Questions 28

A Cisco ACI bridge domain and VRF are configured with a default data-plane learning configuration. Which two endpoint attributes are programmed in the leaf switch when receiving traffic? (Choose two.)

Options:

A.  

Remote MAC. IP

B.  

Remote Subnet

C.  

Local IP, not MAC

D.  

Local MAC, IP

E.  

Local Subnet

F.  

Remote IP

Discussion 0