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An ACI administrator notices a change in the behavior of the fabric. Which action must be taken to determine if a human intervention introduced the change?
Inspect event records in the APIC UI to see all actions performed by users.
Inspect /var/log/audit_messages on the APIC to see a record of all user actions.
Inspect audit logs in the APIC UI to see all user events.
Inspect the output of show command history in the APIC CLI.
Show answer and explanation
Correct answer: C. Inspect audit logs in the APIC UI to see all user events.
Audit logs in the APIC UI provide a comprehensive record of all user actions and configuration changes performed by administrators. This is the primary interface for reviewing human interventions and tracking who made changes and when. The audit logs capture all administrative activities performed through the APIC interface.
Why the other options are wrong
A. Event records show system events but not specifically user actions in the detail needed for troubleshooting configuration changes.
B. The audit_messages file path is not the standard location for user action auditing in ACI; audit logs are accessed through the APIC UI.
D. Command history on the APIC CLI does not provide a persistent, searchable audit trail of all user actions across the fabric.
Question 2
An engineer is creating a configuration import policy that must terminate if the imported configuration is incompatible with the existing system. Which import mode achieves this result?
merge
atomic
best effort
replace
Show answer and explanation
Correct answer: B. atomic
The atomic import mode treats the entire import as a single transaction that either succeeds completely or fails entirely. If any part of the imported configuration is incompatible with the existing system, the entire import is rejected and no changes are applied. This ensures the system remains in a consistent state.
Why the other options are wrong
A. Merge mode adds or updates objects but does not rollback if incompatibilities are encountered.
C. Best effort mode attempts to import as much as possible and ignores incompatibilities rather than terminating the operation.
D. Replace mode overwrites existing configuration entirely, which does not address incompatibility concerns.
Question 3
Which components must be configured for the BGP Route Reflector policy to take effect?
spine fabric interface overrides and profiles
access policies and profiles
pod policy groups and profiles
leaf fabric interface overrides and profiles
Show answer and explanation
Correct answer: C. pod policy groups and profiles
BGP Route Reflector policies are applied at the pod level through pod policy groups and profiles. These pod-level policies configure the Route Reflector functionality for the fabric's control plane routing and must be deployed through pod policies.
Why the other options are wrong
A. Spine fabric interface overrides are used for data plane interface configuration, not Route Reflector policies.
B. Access policies configure leaf access ports and are not related to Route Reflector functionality.
D. Leaf fabric interface overrides configure leaf-to-spine connections but do not define Route Reflector behavior at the required pod level.
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404 questions in the bank
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ABOUT THIS PACK
What’s in the Cisco 300-620 DCACI pack
404 questions across all six DCACI domains
Answers and explanations for every question, including the wrong options
A questions-only PDF for timed practice runs
Delivered by email shortly after checkout
Free monthly updates for as long as the exam is live
Pass or your money back
A failed 300-620 attempt costs another US$300. This pack is US$39, paid once, and refunded if you fail.
What makes the DCACI hard
DCACI is a CCNP Data Center concentration, and v1.2 is the current blueprint. It is a 90-minute exam that goes deep on one product rather than wide across the data centre, so the questions get into configuration detail fast.
Three domains carry 20% each: fabric infrastructure, external connectivity and management. Fabric covers the object model, virtual APIC, fabric discovery and policies, and the full logical construct chain of tenant, application profile, VRF, bridge domain, EPG and contracts. External connectivity is Layer 2 with STP basics and EPG port bindings, plus L3Out. Management covers out-of-band and in-band access, Nexus Dashboard Insights, snapshots, AAA and upgrades. Packet forwarding is 15% on endpoint learning and bridge domain settings. Integrations at 15% now include Nutanix VMM alongside VMware DVS. ACI Anywhere closes at 10% with Multi-Pod, Multi-Site and Remote Leaf.
About the exam
300-620 (Implementing Cisco Application Centric Infrastructure v1.2, DCACI) earns the Cisco Certified Specialist, Data Center ACI Implementation certification and counts as the concentration exam for CCNP Data Center. It covers ACI fabric infrastructure, packet forwarding, external network connectivity, VMM and service graph integrations, ACI management, and ACI Anywhere. No prerequisites.
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Cassie Hensley –
I was struggling with the concepts, but these dumps made it much easier. The explanations provided alongside the answers were really helpful. Thank you Cert Stash...!