300-630 Exam Dumps : Implementing Cisco Application Centric Infrastructure - Advanced (DCACIA)

To ensure the Cisco ACI fabric adheres to strict security protocols and only learns endpoints from configured subnets on a bridge domain, the “Enforce Subnet Check” feature must be enabled. This feature restricts endpoint learning to IP addresses belonging to the subnets defined in the bridge domain associated with the endpoint’s VLAN, enhancing security by preventing learning of endpoints from unconfigured subnets. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

 In Cisco ACI fabric, when a Layer 2 unknown unicast packet is encountered, the fabric does not drop the packet. Instead, it uses a flooding mechanism to ensure that the packet reaches its potential destination. This is achieved by utilizing the VRF (Virtual Routing and Forwarding) Outer Multicast Group ID associated with the Bridge Domain (BD) to which the unknown destination MAC address belongs. By doing so, Cisco ACI ensures that all endpoints within the BD have an opportunity to receive and process the packet if they are indeed the intended recipient. References: Implementing Cisco Application Centric Infrastructure Official Cert Guide

For shared L3Out network connectivity among different tenants in a Cisco ACI fabric, a common tenant is necessary. It provides a global space for defining resources like L3Outs once, which can then be utilized by multiple tenants, simplifying management and ensuring consistent policy application. References := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )