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Cisco 300-615 - Troubleshooting Cisco Data Center Infrastructure (300-615 DCIT) v1.1

Last Update May 23, 2026

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  • Exam Name: Troubleshooting Cisco Data Center Infrastructure (300-615 DCIT) v1.1
  • 221 Questions Answers with Explanation Detail
  • Total Questions: 221 Q&A's
  • Single Choice Questions: 195 Q&A's
  • Multiple Choice Questions: 19 Q&A's
  • Drag Drop Questions: 7 Q&A's


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Total Questions: 221
Free Practice Questions: 66

Refer to the exhibit.

Question # 1

The virtual machines running on Cisco UCS B-Series blades are experiencing performance issues that affect the network connectivity of the target application The issue is intermittent and affects only some of the connectivity sessions. Which action resolves the issue?

Options:

A.

Replace blades connected to HIF Eth4/V1 - 4

B.

Implement an I/O module firmware upgrade

C.

Replace the cable with a transceiver between the fabric interconnect and the switch

D.

Change the Cisco UCS MTU size to 9000 bytes

Answer
C
Explanation

The correct action is Replace the cable with a transceiver between the fabric interconnect and the switch. Cisco UCS troubleshooting depends on the relationship between policy, inventory discovery, firmware state, and server identity. The question involves UCS, firmware, fabric interconnect, so the selected option fixes the UCS component or policy that directly controls the failure. In UCS Manager, service profiles, vNIC/vHBA templates, boot policies, firmware packages, server pools, adapters, fabric interconnects, and I/O modules are applied through a managed model; a server can fail even when basic IP reachability exists if the relevant policy is incomplete or the hardware inventory has not been acknowledged correctly. The distractors typically change an unrelated object, force a disruptive recovery without fixing the policy, or apply to a different UCS mode. Cisco guidance is to verify faults, FSM stage, inventory status, association status, and the specific boot or connectivity policy before taking action. After the remediation, validate that the fault clears, the FSM completes, and the server or fabric component returns to the expected operable state.

Refer to the exhibit.

Question # 2

A switch is being downgraded to an earlier release because of a problem with the current release. After the switch is downgraded, it can no longer forward traffic. Which action resolves the issue?

Options:

A.

Enable ISSD after the downgrade is complete.

B.

Roll back to the original image.

C.

Reload the switch.

D.

Shut and no shut the interfaces to the FEX.

Answer
B
Explanation

The answer is Roll back to the original image because Cisco Nexus and ACI forwarding depends on exact agreement between the devices participating in the feature. The scenario references FEX; those technologies fail in predictable ways when required parameters do not match or when the required control-plane advertisement is absent. In DCIT troubleshooting, the engineer should identify the failed dependency, correct that dependency, and then verify the operational table that proves the fix. For example, vPC and EVPN checks focus on consistency, VNI/VRF bindings, peer-gateway behavior, and host-route advertisement; routing checks focus on neighbor state, MTU, timers, authentication, next-hop, and route preference. The selected answer addresses the dependency that blocks forwarding. The distractors are plausible because they touch related features, but they do not resolve the specific failure condition. Post-change validation should include protocol state, learned endpoint or route entries, and a traffic test across the affected path.

During the upgrade of Cisco UCS Infrastructure firmware, where is the latest backup file named " bkp.timestamp.tgz " stored?

Options:

A.

File/workspace/backup inside blade chassis

B.

/workspace/backup inside fabric interconnect

C.

File/workspace/backup inside fabric interconnect

D.

/workspace/backup inside blade chassis

Answer
B
Explanation

/workspace/backup inside fabric interconnect is the appropriate UCS remediation because the symptom maps to a specific managed object rather than a generic server failure. Cisco UCS abstracts hardware through service profiles and policies; therefore, issues involving UCS, firmware, fabric interconnect must be corrected where UCS Manager programs the adapter, boot target, firmware, management certificate, pool qualification, or fabric interconnect state. The selected answer restores that programming path. The other options may appear plausible, but they do not correct the object that UCS uses to derive operational state. For example, boot failures require the correct vHBA/iSCSI target and LUN policy, discovery issues require the proper physical and management path, and firmware failures require the documented recovery action for the failed FSM stage. The correct validation is to inspect the associated fault, confirm inventory acknowledgment, verify the policy under the service profile or equipment tree, and then recheck boot or connectivity behavior after the FSM completes.

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Cisco 300-615 FAQ'S

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