Implementing Cisco Application Centric Infrastructure (DCACI) 300-620 Certification Exam Questions

Cisco 300-620 | Implementing Cisco Application Centric Infrastructure (DCACI) Certification Exam Guide & Practice Questions

The Cisco 300-620 examination, officially titled Implementing Cisco Application Centric Infrastructure (DCACI), is Cisco’s concentration exam validating data center engineers, cloud administrators, and fabric specialists. This assessment measures an engineer's ability to configure, implement, operate, and troubleshoot Cisco Nexus 9000 Series switches operating in ACI mode. Technical competencies include APIC cluster initialization, the logical tenant object model, fabric packet forwarding, external network connectivity (L2Out/L3Out), hypervisor and service graph integrations, and multi-fabric architectures.

Operating a policy-driven programmable data center fabric requires expertise in declarative object hierarchies, endpoint learning mechanics, and hardware proxy lookups. Reviewing verified 300-620 certification exam questions helps candidates evaluate their understanding of contract filtering, bridge domain knobs, and border leaf routing under realistic conditions. Practicing with targeted Cisco 300-620 practice questions and scenario testlets ensures you build the technical speed required to analyze topology faults and policy mismatches.

Exam Information

For official scheduling, exam requirements, and the latest blueprint updates, visit the official Cisco 300-620 certification page. 

Career Opportunities & Industry Benefits

• Target Roles: Cisco ACI Implementation Engineer, Senior Data Center Network Engineer, Cloud Fabric Architect, Network Infrastructure Consultant, and Enterprise Virtualization Lead.

• Operational Impact: Certified engineers eliminate manual VLAN trunk provisioning, enforce Zero Trust micro-segmentation using ACI contracts, automate hypervisor port group synchronization, and maintain scalable multi-site spine-leaf fabrics.

• Compensation Benchmarks: Network engineers holding the CCNP Data Center credential with the DCACI concentration earn median annual salaries between $110,000 and $165,000+.

• Credential Progression: Passing 300-620 earns the Cisco Certified Specialist – Data Center ACI Implementation designation and fulfills the concentration requirement for CCNP Data Center when paired with the core 350-601 DCCOR exam.

Official Syllabus Percentage Breakdown

The curriculum distributes ACI design, configuration, and management competencies across six weighted domains:

Detailed Exam Blueprint & Core Technical Concepts

1.0 ACI Fabric Infrastructure (20%)

• Fabric Initialization: Spine-leaf topology requirements, LLDP-based node discovery, APIC cluster sizing, fabric addressing (TEP pool / Infra VRF), and switch registration.

• Access Policies: Configuring pools (VLAN, VSAN), interface policies, interface policy groups (IPGs), leaf switch profiles, and Attachable Access Entity Profiles (AAEPs).

• Logical Constructs: Implementing tenants (common, mgmt, infra, user), VRFs, bridge domains (BDs), Application Profiles, Endpoint Groups (EPGs), and application contracts (subjects, filters, reverse port filtering).

2.0 ACI Packet Forwarding (15%)

• Endpoint Learning Mechanics: Local station learning on leaf switches, remote endpoint learning across the VXLAN fabric, bounce entries, and spine proxy lookups.

• Bridge Domain Tuning: Configuring unicast routing, Layer 2 unknown unicast forwarding (hardware proxy vs. flood), and ARP flooding behaviors.

• Traffic Forwarding Paths: Analyzing intra-EPG, inter-EPG, and inter-VRF routed and bridged packet flows through spine and leaf switches.

3.0 External Network Connectivity (20%)

• Layer 2 Out (L2Out): Extending Layer 2 domains outside the ACI fabric, configuring Mis-Cabling Protocol (MCP), Spanning Tree Protocol (STP) interworking, and static EPG port encap bindings.

• Layer 3 Out (L3Out): Implementing routed connectivity to external networks using OSPF, eBGP, and static routing; configuring routed interfaces, routed subinterfaces, and SVIs on border leaf switches.

• External Routing Contracts: Defining external EPGs (l3extInstP), applying contracts between internal EPGs and external routes, and managing route transit through the fabric.

4.0 Integrations (15%)

• Virtual Machine Manager (VMM): Integrating VMware vCenter Distributed Virtual Switch (DVS) with APIC; dynamic port group creation and VLAN allocation.

• Immediacy Settings: Differentiating Resolution Immediacy (Pre-provision, Immediate, On Demand) and Deployment Immediacy on leaf switch hardware programming.

• Service Graphs: Deploying Layer 4–Layer 7 service graphs (firewalls, load balancers), comparing managed (APIC device package) vs. unmanaged mode, and policy-based redirect (PBR).

5.0 ACI Management (20%)

• Fabric Management: Configuring Out-of-Band (OOB) and In-Band (INB) management access, management contracts, and external connectivity preferences.

• Monitoring & Assurance: Utilizing Syslog, SNMP, NetFlow, Nexus Dashboard Insights, and health score telemetry.

• System Operations: Managing Role-Based Access Control (RBAC), security domains, APIC snapshot backups, configuration rollback, and staged switch firmware upgrades.

6.0 ACI Anywhere (10%)

• Multi-Pod Architecture: Interconnecting pods via an Inter-Pod Network (IPN), single APIC cluster management, and OSPF/BGP EVPN control plane extension.

• Multi-Site Architecture: Orchestrating geographically separated ACI fabrics using Cisco Nexus Dashboard Orchestrator (NDO / Multi-Site Orchestrator), Intersite Network (ISN), and independent APIC clusters.

• Remote Leaf: Extending ACI policies and central APIC control to small edge branch locations without local spine switches.

Exam Format & Testing Rules

• Linear Forward-Only Progression: Cisco exams strictly enforce linear progression; you cannot navigate backward or change answers once submitted.

• Question Presentation: Single-choice, multiple-choice, drag-and-drop technology alignments, and scenario testlets evaluating ACI GUI paths and configuration outputs.

• Scoring Rules: Standard scaled score between 300 and 1000 with a passing threshold around 825. Points are awarded strictly for correct answers with no negative deduction for incorrect choices.

• Testing Methods: Delivered at authorized Pearson VUE testing centers or via OnVUE online remote proctoring.

Proven Preparation Strategy

• Master the Core 20% Domains: ACI Fabric Infrastructure, External Network Connectivity, and ACI Management collectively account for 60% of the entire exam. Prioritize access policy chains (Pools → Policies → Policy Groups → Profiles → AAEP → Domain) and L3Out configurations.

• Review Packet Forwarding Knobs: Understand how the leaf handles Layer 2 unknown unicast when set to hardware proxy (spine COOP database lookup) versus flood, and know how ARP flooding affects silent host discovery.

• Benchmark Timing with Mock Tests: Taking an authentic 300-620 practice test alongside verified Cisco 300-620 exam dumps builds the diagnostic speed needed to parse complex tenant topology diagrams and configuration exhibits within the 90-minute limit.

Prepare for Your Certification Today

Validating your ability to deploy Cisco ACI fabrics, configure tenant policies, manage L3Out connectivity, and automate virtualized data center workloads is a defining benchmark for cloud and data center engineers.

Reviewing real 300-620 exam questions and testing your understanding using free 300-620 dumps will reinforce critical APIC configurations ahead of test day.

Start practicing now and pass your Cisco 300-620 exam with confidence at ExamTopicsBase.