The Cisco 300-620 exam validates your ability to design and implement Cisco Application Centric Infrastructure (ACI) solutions in enterprise environments. This exam is intended for network professionals pursuing the Cisco Certified Network Professional, Cisco Certified Network Professional Data Center, or Cisco Specialist certifications. It tests both theoretical knowledge and practical decision-making across ACI deployment scenarios. This page provides a structured study map, topic breakdown, and preparation guidance to help you build confidence and competency before exam day.
Use this topic map to guide your study for Cisco 300-620 (Implementing Cisco Application Centric Infrastructure) within the Cisco Certified Network Professional, Cisco Certified Network Professional Data Center, and Cisco Specialist certification paths.
The 300-620 exam uses multiple question types to assess both conceptual understanding and applied reasoning. Questions progress in difficulty and emphasize real-world decision-making over rote memorization.
Questions are designed to mirror challenges you would encounter in production ACI environments, so practical lab experience directly improves your performance.
A structured study plan mapped to the six core topics ensures comprehensive coverage and efficient use of your preparation time. Combine concept review with hands-on practice and timed assessments to build both depth and speed.
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ACI Fabric Infrastructure and ACI Packet Forwarding typically account for the largest portion of exam questions because they form the foundation of all ACI deployments. However, all six topics are tested, so balanced preparation across all domains is essential. Focus extra effort on topics where you have less hands-on experience.
Fabric Infrastructure defines how internal ACI nodes communicate, while External Network Connectivity determines how traffic enters and exits the fabric to reach non-ACI systems. In practice, you design the fabric topology first, then configure border leaves and external policies to integrate legacy networks, branch offices, or cloud platforms. Understanding both together helps you design scalable, hybrid architectures.
Hands-on experience significantly improves exam performance and real-world confidence. Prioritize labs that cover APIC cluster setup, tenant and application policy configuration, and basic fabric troubleshooting. If you have access to a live ACI environment, practice external network attachment and integration scenarios. Even simulator-based labs build valuable muscle memory for navigation and configuration workflows.
Many candidates confuse VXLAN encapsulation details or misunderstand how endpoint learning works across the fabric. Others overlook the importance of policy objects (contracts, filters, EPGs) in controlling traffic flow. Scenario questions often trick test-takers who skip reading all answer options carefully or who choose the first seemingly correct answer without considering trade-offs. Slow down, read each question fully, and reason through the business or operational context.
In the final week, avoid learning new material; instead, focus on reviewing weak topic areas and redoing practice questions you previously missed. Spend 30-45 minutes daily on targeted review rather than marathon study sessions. Take one full-length practice test mid-week under strict exam conditions, then use the remaining days to address gaps. On the day before the exam, do a light review of key terminology and then rest well.
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?
To perform a Cisco ACI fabric upgrade that minimizes the impact on user traffic and allows only permitted users to perform an upgrade, the following configuration steps should be taken:
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?
A bridge domain for a new endpoint group in the Cisco ACI fabric must meet these requirements:
The bridge domain must function as the default gateway for the subnet so that routing remains within the Cisco ACI fabric.
ARP requests must be managed via Layer 3 unicast packets or be dropped to reduce excessive broadcast traffic.
The impact of misconfigured virtual machines must be kept to a minimum by preventing IP addresses outside of the configured subnet from being routed.
Which set of actions must be taken?
To meet the requirements for the new endpoint group's bridge domain in the Cisco ACI fabric, the following actions must be taken:
Disable ARP Flooding: This action prevents ARP requests from being broadcast across the entire bridge domain, which reduces excessive broadcast traffic.
Enable Limit IP Learning to Subnet: This setting restricts IP address learning to only those IPs within the configured subnet, minimizing the impact of misconfigured virtual machines.
Enable Unicast Routing on the bridge domain and configure a subnet: Enabling unicast routing allows the bridge domain to function as the default gateway for the subnet, ensuring that routing remains within the Cisco ACI fabric.
When configuring Cisco ACI VMM domain integration with VMware vCenter, which object is created in vCenter?
An engineer is implementing a connection that represents an external bridged network. Which two configurations are used? (Choose two.)
