Question 1

Which PIM version must be configured in the Inter-Pod Network to allow broadcast, unknown unicast. and multicast flooding between Cisco ACI pods?

Accepted Answer

C

Explanation: Protocol Independent Multicast sparse mode (PIM-SM) is designed for efficient routing to multiple receivers in a multicast group across an inter-pod network (IPN). PIM sparse mode is best suited for environments where receivers are dispersed because it allows for explicit join messages to control the flow of traffic. This makes it ideal for scenarios where broadcast, unknown unicast, and multicast flooding between Cisco ACI pods is required. Reference := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

Question 2

What is a design implication for Cisco ACI using an application-centric approach?

Accepted Answer

A

Explanation: Using an application-centric approach in Cisco ACI means that multiple VLANs and/or multiple EPGs can be grouped under one bridge domain. This approach aligns network constructs with application requirements, enabling more efficient and flexible network configurations. Reference := Network Centric to ACI Centric Migration - Cisco

Question 3

What is a characteristic of application-centric design in Cisco ACI?

Accepted Answer

C

Explanation: An application-centric design in Cisco ACI focuses on the application requirements and interactions between different application components. In this design, EPGs (Endpoint Groups) represent different application tiers, such as web, application, and database tiers. This approach allows for a more flexible and scalable network configuration that aligns with the application architecture, enabling policies to be applied based on the application’s needs rather than the network topology. Reference := Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 4

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_66_img_1.jpg Which feature is available across sites if EPGs are stretched?

Accepted Answer

C

Explanation: When EPGs (Endpoint Groups) are stretched across sites, Layer 2 flooding is available across these sites. This allows for the extension of the Layer 2 domain and the sharing of broadcast, unknown unicast, and multicast traffic between EPGs at different locations. Reference: = Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 5

Where are STP BPDUs flooded in Cisco ACI fabric?

Accepted Answer

A

Explanation: In Cisco ACI fabric, STP BPDUs are flooded in the bridge domain VLAN. This allows the BPDUs to be propagated throughout the fabric, maintaining the STP topology2. Reference := Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 6

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_103_img_1.jpg The external subnet and internal EPG1 must communicate with each other, and the L30ut traffic must leak Into the VRF named "VF1". Which configuration set accomplishes these goals?

Accepted Answer

D

Explanation: The configuration set that accomplishes the goals of allowing communication between the external subnet and internal EPG1, as well as leaking L30ut traffic into VRF named “VF1”, is option D: Export Route Control Subnet Import Route Control Subnet Aggregate Shared Routes. This configuration ensures that routes are properly exported from one entity and imported into another while aggregating shared routes for efficient routing within the VRF “VF1”. It allows for controlled route leaking which is necessary for communication across different entities within a Cisco ACI environment. Reference := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )

Question 7

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_100_img_1.jpg Server S1 is connected to Cisco ACI using two NIC interfaces. NIC1 is an active interface and NIC2 is a standby interface. NIC2 uses its MAC address to send traffic to the Cisco ACI fabric when NIC1 is offline. The requirement is to update the IP address to use the MAC address of NIC2. Which action accomplishes this goal?

Accepted Answer

D

Explanation: Enabling GARP EP Move Detection allows the Cisco ACI fabric to dynamically update the IP address to use the MAC address of NIC2 when NIC1 goes offline. This feature is crucial for maintaining network connectivity and ensuring that traffic continues to flow seamlessly through the standby interface1.

Question 8

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?

Accepted Answer

A

Explanation: 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. Reference := Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 9

What are two characteristics of Cisco ACI interaction with MSTP? (Choose two.)

Accepted Answer

A, D

Explanation: Cisco ACI handles MSTP TCN frames by flushing local endpoints in the affected EPG to prevent stale entries. For MST BPDUs to traverse the ACI fabric, a dedicated EPG for the native VLAN with static bindings is required for MSTP-enabled external switches. Reference := (Implementing Cisco Application Centric Infrastructure Official Cert Guide)

Question 10

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_2_img_1.jpg How is the ARP request from VM1 forwarded when VM2 is not learned in the Cisco ACI fabric?

Accepted Answer

A

Explanation: 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 11

An engineer must limit local and remote endpoint learning to the bridge domain subnet. Which action should be taken inside the Cisco APIC?

Accepted Answer

B

Explanation: To limit both local and remote endpoint learning to instances where the source IP address belongs to a bridge-domain subnet in the VRF instance, the action that should be taken inside the Cisco APIC is to enable the “Enforce Subnet Check” feature. This configuration ensures that IP addresses outside the configured subnets for the bridge domain are not learned, preventing mis-learning of IP addresses that do not belong to the fabric12.

Question 12

Refer to the exhibit. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_39_img_1.jpg Which configuration must be implemented to allow intra-VRF transit routing between the two external routers?

Accepted Answer

C

Explanation: For intra-VRF transit routing between two external routers in different OSPF areas, OSPF virtual links are required. They connect non-contiguous areas to the backbone area, ensuring all areas can communicate even if not directly connected. Reference := Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 13

DRAG DROP
A leaf receives unicast traffic that is destined to an unknown source, and spine proxy is enabled in the
corresponding bridge domain. Drag and drop the Cisco ACI forwarding operations from the left into
the order the operation occurs on the right.
300-630 practice exam questions

Accepted Answer

Explanation: https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/300-630/page_10_img_1.jpg

Question 14

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

Accepted Answer

D

Explanation: The Forwarding Tag (FTAG) in Cisco ACI is used to load balance multi-destination traffic. FTAG trees facilitate efficient forwarding of multicast traffic within the fabric, ensuring optimal distribution and load balancing across multiple paths. All multi-destination traffic is encapsulated within VXLAN, and FTAG trees play a crucial role in achieving efficient traffic flow345. Reference: Implementing Cisco Application Centric Infrastructure Official Cert Guide

Question 15

Which approach does Cisco ACI use to achieve multidestination packet forwarding between leaf switches in the same fabric?

Accepted Answer

C

Explanation: Cisco ACI uses a mapping of VXLAN Virtual Network Identifier (VNI) to multicast groups to facilitate multidestination packet forwarding between leaf switches within the same fabric. This approach allows for efficient communication and data packet distribution to multiple destinations simultaneously1. Reference := Cisco ACI Multidestination Packet Forwarding Approach

Free Cisco 300-630 Actual Exam Questions