Cisco 300-630 DCACIA Exam Questions Instant Access

Question 1

Refer to the exhibit.

A Cisco ACI fabric must be integrated with VMware. Leaf1 and Leaf2 are connected to S1 using a VPC. The object VMware Virtual Distributed switch VPC Policy group type has been created in the fabric. Which mode must be set for the port-channel policy to allow the failover and the full use of the bandwidth in both directions?

ALink Aggregation Control Protocol

BMAC Pinning

CStatic channel - Mode On

DExplicit failover order

Answer : A

LACP is the correct mode for the port-channel policy to ensure failover and full bandwidth utilization in both directions when integrating a Cisco ACI fabric with VMware using a VPC connected to Leaf1 and Leaf2. It allows multiple physical ports to be bundled into a single logical channel, providing redundancy and increased bandwidth.Reference:= (Implementing Cisco Application Centric Infrastructure Official Cert Guide)

Question 2

Which device replicates Broadcast. Unicast. and Multicast (BUM) frames to all remote sites in a Cisco ACI Multi-Site with multiple stretched bridge domains?

Aremote spine node that translates the VNID to the locally significant value

Breceiving leaf that learns the location for the sourced BUM traffic

Csource leaf that floods the traffic to the specific multicast group or GlPo

Dlocal spine that is elected the designated forwarder for each bridge domain

Answer : C

In a Cisco ACI Multi-Site setup, the source leaf is responsible for flooding BUM (Broadcast, Unicast, and Multicast) traffic to the specific multicast group or GIPo (Group IP Overlay).This process involves the ingress replication function on the spine nodes of the source site to replicate BUM traffic to all remote sites where the bridge domain is stretched12.

Question 3

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?

AAttach the templates to the newly configured site

BConfigure a provider for the Cisco ACI Multi-Site Orchestrator

CImport existing policies from an existing tenant to Cisco ACI Multi-Site Orchestrator

DConfigure the Infra Site-Specific Settings

Answer : B

Before associating a schema with a newly configured site in Cisco ACI Multi-Site Orchestrator, it's essential toconfigure a provider. This establishes a communication link between the orchestrator and the sites, enabling proper deployment and management of objects across multiple sites.

Question 4

Refer to the exhibit.

In a Cisco ACI Multi-Site deployment, traffic fails to pass between Site-A and Site-B. and an engineer troubleshoots the link between ISN-01 and Node-201. Which set of actions establishes connectivity?

A* Configure the MTU on the link to be at least 1000 bytes larger than the MTU of the ACI fabrics.
* Configure the link as a routed subinteriace by using VLAN-4.

B* Configure the MTU on the link to be at least 100 bytes larger than the MTU of the ACI fabrics.
* Configure the link as an access interface by using VLAN-4.

C* Configure the MTU on the link to be at least 100 bytes larger than the MTU of the ACI fabrics.
* Configure the link as a routed subinterface by using VLAN-4.

D* Configure the MTU on the link to be at least 1000 bytes larger than the MTU of the ACI fabrics.
* Configure the link as an access interface by using VLAN-4.

Answer : C

In a Cisco ACI Multi-Site deployment, proper configuration of the inter-site link is crucial for traffic to pass between different sites. The MTU size is particularly important; if it's not set correctly, packets may be dropped or fragmented, leading to connectivity issues. By configuring the MTU on the link to be at least 100 bytes larger than that of the ACI fabrics, you allow for encapsulation overhead without packet drops due to exceeding MTU limits. Additionally, configuring the link as a routed subinterface using VLAN-4 is necessary for routing across different broadcast domains, which is essential for inter-site communication in an ACI fabric.Reference: Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 5

Refer to the exhibit.

An engineer is deploying a Cisco ACI Multi-Pod with an independent active/active Layer 3 firewall cluster across the pods. Which task must the engineer perform to prevent the creation of duplicate IP/MAC entries across the pods?

AConfigure anycast service.

BDisable Limit IP Learning to Subnet.

CConfigure the subnet as shared.

DEnable Host Route Advertisement.

Answer : C

In a Cisco ACI Multi-Pod deployment, configuring the subnet as shared is crucial to prevent duplicate IP/MAC entries across pods. This allows endpoints in different pods to be part of the same subnet without causing IP/MAC duplication issues, ensuring policy enforcement by the firewall cluster.Reference:= ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

Question 6

Refer to the exhibit.

Which combination of flags in the Cisco ACI contract allows a client in WebClient EPG to establish an HTTP connection toward a server in WebServer EPG?

AApply Both Direction ENABLED and Reverse Port Filter ENABLED

BApply Both Direction DISABLED and Reverse Port Filter DISABLED

CApply Both Direction DISABLED and Reverse Port Filter ENABLED

DApply Both Direction ENABLED and Reverse Port Filter DISABLED

Answer : C

In Cisco ACI, contracts define the policies for communication between EPGs (Endpoint Groups). For a client in WebClient EPG to establish an HTTP connection toward a server in WebServer EPG, the contract must allow the initiation of communication from WebClient to WebServer. Since HTTP uses port 80, the destination port (DST Port) should be set to 80 as per standard HTTP communications. The option ''Apply Both Direction DISABLED'' means that only the initiator of the connection (in this case, WebClient EPG) can send traffic unless specified otherwise by another contract or filter. The ''Reverse Port Filter ENABLED'' allows return traffic from WebServer EPG back to WebClient EPG on dynamically allocated source ports used by WebClient when initiating the connection. This combination ensures that clients can initiate an HTTP request and receive responses from servers.Reference: = Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 7

Which mechanism is used by ACI spine switches to maintain a consistent copy of the endpoint address and location information?

ACOOP

BISIS

CBD

DOSPF

Answer : A

ACI spine switches use the Council Of Oracles Protocol (COOP) mechanism to maintain a consistent copy of endpoint address and location information. COOP is responsible for distributing this critical data among spines so that each has an accurate view of network endpoints, which is essential for efficient packet forwarding within an ACI fabric.Reference:= ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

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