Question 1

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?

Accepted Answer

A)  spine headend replication 
B)  BIDIR-PIM 
C)  MP-BGP 
D)  MSDP

Question 2

An engineer creates the objects that must be deployed at each site in Cisco ACI Multi-Site Orchestrator. Which action should be taken before the schema can be associated with the newly configured site?

Accepted Answer

A)  Attach the templates to the newly configured site 
B)  Configure a provider for the Cisco ACI Multi-Site Orchestrator 
C)  Import existing policies from an existing tenant to Cisco ACI Multi-Site Orchestrator 
D)  Configure the Infra Site-Specific Settings

Question 3

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?

Accepted Answer

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

Question 4

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?

Accepted Answer

A)  PBR for routed firewalls 
B)  separate L3Out peerings for routed firewalls 
C)  routed firewall for the default gateway 
D)  transparent firewalls

Question 5

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

Accepted Answer

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.

Question 6

What are two characteristics of Cisco ACI and Spanning Tree Protocol interaction? (Choose two.)

Accepted Answer

A)  When a TCN BPDU is received in a VLAN, Cisco ACI flushes the endpoints for the associated encapsulation. 
B)  STP BPDUs are dropped due to MCP. 
C)  MST BPDUs are flooded correctly in Cisco ACI fabric without additional configuration. 
D)  BPDU filter and BPDU guard can be configured on Cisco ACI leaf edge ports. 
E)  Cisco ACI must be configured as the STP root for all VLANs.

Question 7

Refer to the exhibit. An engineer extends a Cisco ACI Multi-Pod setup to a Cisco ACI Multi-Site implementation. Which action allows the interconnection?

Accepted Answer

A)  Configure BIDIR-PIM in the IPN and ISN 
B)  Use dedicated uplinks on Site 1 spines for ISN connections 
C)  Connect all spines to the IPN and ISN 
D)  Filter the advertisement of the Site 2 TEP pool into the IPN

Question 8

An organization deploys active-active data centers and active-standby firewalls in each data center. Which action should be taken in a Cisco ACI Multi-Pod to maintain traffic symmetry through the firewalls?

Accepted Answer

A)  Enable Endpoint Dataplane Learning 
B)  Disable service node Health Tracking 
C)  Enable Pod ID Aware Redirection 
D)  Disable Resilient Hashing

Question 9

An engineer configures a new Cisco ACI Multi-Pod setup. Which action should be taken for fabric discovery to be successful for the nodes in Pod 2?

Accepted Answer

A)  Select the Route Reflector field in Pod Peering 
B)  Enable the DSCP class-cos translation policy for Layer 3 traffic 
C)  Configure POD 2 Data Plane TEP under the Pod Connection Profile 
D)  Add the IPN subnet under the Fabric External Routing Profile

Question 10

What is the purpose of the Forwarding Tag (FTAG) in Cisco ACI?

Accepted Answer

A)  FTAG is used in Cisco ACI to add a label to the iVXLAN traffic in the fabric to apply the correct policy. 
B)  FTAG is used in Cisco ACI to add a label to the VXLAN traffic in the fabric to apply the correct policy. 
C)  FTAG trees in Cisco ACI are used to load balance unicast traffic. 
D)  FTAG trees in Cisco ACI are used to load balance mutli-destination traffic.

Question 11

In a Cisco ACI Multi-Site fabric, the Inter-Site BUM Traffic Allow option is enabled in a specific stretched bridge domain. What is used to forward BUM traffic to all endpoints in the same broadcast domain?

Accepted Answer

A)  ingress replication on the spines in the source site 
B)  egress replication on the source leaf switches 
C)  egress replication on the destination leaf switches 
D)  ingress replication on the spines in the destination site

Question 12

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

Accepted Answer

A)  Set the subnet scope to Shared Between VRFs 
B)  Enable Advertise Externally under the subnet scope 
C)  Change the contract scope to Tenant 
D)  Change the subject scope to VRF 
E)  Export the contract and import as a contract interface

Question 13

Refer to the exhibits. Which subject must be configured for the All_noSSH contract to allow all IP traffic except SSH between the two EPGs?

Accepted Answer

A)   
B)   
C)   
D)

Question 14

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?

Accepted Answer

A)  unicast routing 
B)  ARP flooding 
C)  unknown unicast flooding 
D)  proxy ARP

Question 15

An engineer configures a new Cisco ACI Multi-Pod and must set up the link between the spine and the IPN device. Which three actions should be taken to accomplish this goal? (Choose three.)

Accepted Answer

A)  Enable MP-BGP routing 
B)  Enable BIDIR-PIM protocol 
C)  Enable PIM-SM protocol 
D)  Enable OSPF routing 
E)  Enable IS-IS routing
F) Enable DHCP relay

Question 16

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?

Accepted Answer

A)  Disable VRF Policy Control Enforcement 
B)  Disable IP Data Plane Learning 
C)  Migrate L3Outs to another switch 
D)  Disable Remote EP Learning

Exam 21: Automating Cisco Data Center Solutions (DCAUTO)