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NCP-AII Questions & Answers
Exam Code: NCP-AII
Exam Name: NCP-AI Infrastructure
Certification Provider: NVIDIA
NCP-AII Premium File
170 Questions & Answers
Last Update: Nov 6, 2026
Includes questions types found on actual exam such as drag and drop, simulation, type in, and fill in the blank.
Verified by experts
NCP-AII Questions & Answers
Exam Code: NCP-AII
Exam Name: NCP-AI Infrastructure
Certification Provider: NVIDIA
NCP-AII Premium File
170 Questions & Answers
Last Update: Nov 6, 2026
Includes questions types found on actual exam such as drag and drop, simulation, type in, and fill in the blank.
$87.99
$79.99

NCP-AI Infrastructure NCP-AII Practice Test 46

Question 450

The site has performed 'enforce qualified bend radius and retest with rack doors secured'. Which direct result is needed to close this issue rather than merely check a configuration?

  1. link quality remains good during routine door and cable movements
  2. transceiver diagnostics show acceptable receive power and stable link
  3. long-duration traffic test produces no incremental uncorrected link errors
  4. optical readings and bit-error tests return to qualified channel margins

Explanation

Correct Answer

A:

Correct. It specifically tests the outcome of the approved remediation. The failure mechanism was mechanical cable handling changes optical loss under normal installation conditions; the listed result demonstrates the expected behavior.

Incorrect Answers

B:

“transceiver diagnostics show acceptable receive power and stable link” addresses optical signal characteristics are incompatible across the link, but the current hardware or infrastructure issue is mechanical cable handling changes optical loss under normal installation conditions. The option “link quality remains good during routine door and cable movements” is more directly tied to the required outcome.

C:

“long-duration traffic test produces no incremental uncorrected link errors” addresses installed cable environment or routing is compromising signal quality, but the current hardware or infrastructure issue is mechanical cable handling changes optical loss under normal installation conditions. The option “link quality remains good during routine door and cable movements” is more directly tied to the required outcome.

D:

“optical readings and bit-error tests return to qualified channel margins” addresses connector contamination or bend loss has impaired channel margin, but the current hardware or infrastructure issue is mechanical cable handling changes optical loss under normal installation conditions. The option “link quality remains good during routine door and cable movements” is more directly tied to the required outcome.

Question 451

A maintenance engineer clears switch error counters before collecting their pre-change baseline. Which corrective action is MOST appropriate before commissioning can proceed?

  1. compare port BER and lane health and replace defective media if indicated
  2. stress the link at intended line rate and monitor detailed physical error counters
  3. trend corrected and uncorrected FEC errors against vendor thresholds
  4. record and timestamp port counters before media replacement and after soak

Explanation

Correct Answer

D:

Correct. This is the corrective step for physical-layer repair evidence cannot be compared to historical fault rate; it addresses the failure at its source. The confirming observation is normalized pre/post error rate demonstrates a defensible improvement.

Incorrect Answers

A:

Useful for marginal physical link quality is producing retried or degraded data transmission, but it does not remove the specific condition: physical-layer repair evidence cannot be compared to historical fault rate.

B:

“stress the link at intended line rate and monitor detailed physical error counters” addresses signal integrity must be validated at the actual operational rate, but the current hardware or infrastructure issue is physical-layer repair evidence cannot be compared to historical fault rate. The option “record and timestamp port counters before media replacement and after soak” is more directly tied to the required outcome.

C:

“trend corrected and uncorrected FEC errors against vendor thresholds” addresses rising correction rate can warn of shrinking physical signal margin, but the current hardware or infrastructure issue is physical-layer repair evidence cannot be compared to historical fault rate. The option “record and timestamp port counters before media replacement and after soak” is more directly tied to the required outcome.

Question 452

The implementation team reports that it has completed 'record and timestamp port counters before media replacement and after soak'. Which evidence should the acceptance reviewer request?

  1. observed error counters remain inside the approved fabric quality thresholds
  2. BER meets the stated threshold across the full-rate test window
  3. normalized pre/post error rate demonstrates a defensible improvement
  4. stress and time-series checks show acceptable margin without escalation

Explanation

Correct Answer

C:

Correct. It specifically tests the outcome of the approved remediation. The failure mechanism was physical-layer repair evidence cannot be compared to historical fault rate; the listed result demonstrates the expected behavior.

Incorrect Answers

A:

“observed error counters remain inside the approved fabric quality thresholds” addresses link-up alone does not guarantee adequate cable signal integrity, but the current hardware or infrastructure issue is physical-layer repair evidence cannot be compared to historical fault rate. The option “normalized pre/post error rate demonstrates a defensible improvement” is more directly tied to the required outcome.

B:

“BER meets the stated threshold across the full-rate test window” addresses signal integrity must be validated at the actual operational rate, but the current hardware or infrastructure issue is physical-layer repair evidence cannot be compared to historical fault rate. The option “normalized pre/post error rate demonstrates a defensible improvement” is more directly tied to the required outcome.

D:

“stress and time-series checks show acceptable margin without escalation” addresses rising correction rate can warn of shrinking physical signal margin, but the current hardware or infrastructure issue is physical-layer repair evidence cannot be compared to historical fault rate. The option “normalized pre/post error rate demonstrates a defensible improvement” is more directly tied to the required outcome.

Question 453

An NVIDIA infrastructure team reports this operational finding: a fabric connection has multiple FEC corrections but no packet drops and operators assume it is permanently healthy. Which action MOST directly addresses it?

  1. trend corrected and uncorrected FEC errors against vendor thresholds
  2. inspect pre-FEC bit errors corrected errors and signal levels under load
  3. stress the link at intended line rate and monitor detailed physical error counters
  4. measure receive levels and inspect connectors and bend radius

Explanation

Correct Answer

A:

Correct. The underlying problem is rising correction rate can warn of shrinking physical signal margin. This intervention targets that mechanism. Confirm completion through stress and time-series checks show acceptable margin without escalation.

Incorrect Answers

B:

“inspect pre-FEC bit errors corrected errors and signal levels under load” addresses link-up alone does not guarantee adequate cable signal integrity, but the current hardware or infrastructure issue is rising correction rate can warn of shrinking physical signal margin. The option “trend corrected and uncorrected FEC errors against vendor thresholds” is more directly tied to the required outcome.

C:

Useful for signal integrity must be validated at the actual operational rate, but it does not remove the specific condition: rising correction rate can warn of shrinking physical signal margin.

D:

“measure receive levels and inspect connectors and bend radius” addresses connector contamination or bend loss has impaired channel margin, but the current hardware or infrastructure issue is rising correction rate can warn of shrinking physical signal margin. The option “trend corrected and uncorrected FEC errors against vendor thresholds” is more directly tied to the required outcome.

Question 454

At a GPU cluster site, a leaf switch port is physically cabled to the opposite fabric rail from the approved GPU node map. Which remediation best targets the underlying cause?

  1. reconcile transceiver serial cable label and both switch port IDs
  2. move one NIC path to the specified independent leaf and validate both
  3. trace port-to-port connectivity and reconcile switch inventory
  4. trace and reconnect both endpoints using the authorized cabling schedule

Explanation

Correct Answer

D:

Correct. The underlying problem is rack cabling violates the expected rail-to-switch assignment. This intervention targets that mechanism. Confirm completion through link neighbor and fabric tests agree with rail-specific topology.

Incorrect Answers

A:

“reconcile transceiver serial cable label and both switch port IDs” addresses cabling documentation omits the identifiers needed for fault isolation, but the current hardware or infrastructure issue is rack cabling violates the expected rail-to-switch assignment. The option “trace and reconnect both endpoints using the authorized cabling schedule” is more directly tied to the required outcome.

B:

Useful for physically separate fabric paths were not actually deployed, but it does not remove the specific condition: rack cabling violates the expected rail-to-switch assignment.

C:

“trace port-to-port connectivity and reconcile switch inventory” addresses port labels were trusted without validating physical endpoints, but the current hardware or infrastructure issue is rack cabling violates the expected rail-to-switch assignment. The option “trace and reconnect both endpoints using the authorized cabling schedule” is more directly tied to the required outcome.

Question 455

For a controlled change involving 'trace and reconnect both endpoints using the authorized cabling schedule', which acceptance evidence would best establish the intended outcome?

  1. automated inventory and manual inspection agree for a random cable sample
  2. all intended adjacency edges appear in topology and traffic tests
  3. link neighbor and fabric tests agree with rail-specific topology
  4. a neighbor-discovery and optical test locates the intended exact endpoints

Explanation

Correct Answer

C:

Correct. This is observable proof for the intended change, not just evidence that a command was issued. It establishes link neighbor and fabric tests agree with rail-specific topology, addressing rack cabling violates the expected rail-to-switch assignment.

Incorrect Answers

A:

“automated inventory and manual inspection agree for a random cable sample” addresses cabling documentation omits the identifiers needed for fault isolation, but the current hardware or infrastructure issue is rack cabling violates the expected rail-to-switch assignment. The option “link neighbor and fabric tests agree with rail-specific topology” is more directly tied to the required outcome.

B:

“all intended adjacency edges appear in topology and traffic tests” addresses link count was checked without verifying individual required adjacency, but the current hardware or infrastructure issue is rack cabling violates the expected rail-to-switch assignment. The option “link neighbor and fabric tests agree with rail-specific topology” is more directly tied to the required outcome.

D:

“a neighbor-discovery and optical test locates the intended exact endpoints” addresses port labels were trusted without validating physical endpoints, but the current hardware or infrastructure issue is rack cabling violates the expected rail-to-switch assignment. The option “link neighbor and fabric tests agree with rail-specific topology” is more directly tied to the required outcome.

Question 456

During a readiness assessment, technicians connect two identical-looking fiber jumpers to the wrong labeled spine switch. Which correction should be prioritized?

  1. reconcile transceiver serial cable label and both switch port IDs
  2. trace each lane and correct patch-panel polarity and termination
  3. trace and reconnect both endpoints using the authorized cabling schedule
  4. trace port-to-port connectivity and reconcile switch inventory

Explanation

Correct Answer

D:

Correct. This directly resolves port labels were trusted without validating physical endpoints. A valid handover should also demonstrate a neighbor-discovery and optical test locates the intended exact endpoints.

Incorrect Answers

A:

“reconcile transceiver serial cable label and both switch port IDs” addresses cabling documentation omits the identifiers needed for fault isolation, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “trace port-to-port connectivity and reconcile switch inventory” is more directly tied to the required outcome.

B:

“trace each lane and correct patch-panel polarity and termination” addresses intermediate patching changed end-to-end lane mapping, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “trace port-to-port connectivity and reconcile switch inventory” is more directly tied to the required outcome.

C:

“trace and reconnect both endpoints using the authorized cabling schedule” addresses rack cabling violates the expected rail-to-switch assignment, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “trace port-to-port connectivity and reconcile switch inventory” is more directly tied to the required outcome.

Question 457

A team implements the correction 'trace port-to-port connectivity and reconcile switch inventory' for a GPU cluster problem. Which observed result MOST convincingly proves it worked?

  1. a neighbor-discovery and optical test locates the intended exact endpoints
  2. endpoints negotiate correct fabric mode and establish healthy links
  3. all intended adjacency edges appear in topology and traffic tests
  4. per-lane tests show all links to the intended switch interface

Explanation

Correct Answer

A:

Correct. This is observable proof for the intended change, not just evidence that a command was issued. It establishes a neighbor-discovery and optical test locates the intended exact endpoints, addressing port labels were trusted without validating physical endpoints.

Incorrect Answers

B:

“endpoints negotiate correct fabric mode and establish healthy links” addresses cable and switch port protocol modes are mismatched, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “a neighbor-discovery and optical test locates the intended exact endpoints” is more directly tied to the required outcome.

C:

“all intended adjacency edges appear in topology and traffic tests” addresses link count was checked without verifying individual required adjacency, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “a neighbor-discovery and optical test locates the intended exact endpoints” is more directly tied to the required outcome.

D:

“per-lane tests show all links to the intended switch interface” addresses intermediate patching changed end-to-end lane mapping, but the current hardware or infrastructure issue is port labels were trusted without validating physical endpoints. The option “a neighbor-discovery and optical test locates the intended exact endpoints” is more directly tied to the required outcome.

Question 458

During an AI-factory acceptance review, the following condition is observed: a cluster cabling plan requires redundant paths but both NIC ports terminate on the same leaf. What should the infrastructure engineer do FIRST?

  1. trace and reconnect both endpoints using the authorized cabling schedule
  2. reconcile transceiver serial cable label and both switch port IDs
  3. reconnect the BMC management cables to approved OOB network paths
  4. move one NIC path to the specified independent leaf and validate both

Explanation

Correct Answer

D:

Correct. The underlying problem is physically separate fabric paths were not actually deployed. This intervention targets that mechanism. Confirm completion through one-leaf shutdown leaves the required second path available.

Incorrect Answers

A:

“trace and reconnect both endpoints using the authorized cabling schedule” addresses rack cabling violates the expected rail-to-switch assignment, but the current hardware or infrastructure issue is physically separate fabric paths were not actually deployed. The option “move one NIC path to the specified independent leaf and validate both” is more directly tied to the required outcome.

B:

Useful for cabling documentation omits the identifiers needed for fault isolation, but it does not remove the specific condition: physically separate fabric paths were not actually deployed.

C:

“reconnect the BMC management cables to approved OOB network paths” addresses management and workload interface assignments are physically confused, but the current hardware or infrastructure issue is physically separate fabric paths were not actually deployed. The option “move one NIC path to the specified independent leaf and validate both” is more directly tied to the required outcome.

Question 459

After applying 'move one NIC path to the specified independent leaf and validate both' in an NVIDIA AI factory, what would be the MOST relevant operational verification?

  1. a neighbor-discovery and optical test locates the intended exact endpoints
  2. per-lane tests show all links to the intended switch interface
  3. host power-off management remains reachable while data ports follow data fabric policy
  4. one-leaf shutdown leaves the required second path available

Explanation

Correct Answer

D:

Correct. It specifically tests the outcome of the approved remediation. The failure mechanism was physically separate fabric paths were not actually deployed; the listed result demonstrates the expected behavior.

Incorrect Answers

A:

“a neighbor-discovery and optical test locates the intended exact endpoints” addresses port labels were trusted without validating physical endpoints, but the current hardware or infrastructure issue is physically separate fabric paths were not actually deployed. The option “one-leaf shutdown leaves the required second path available” is more directly tied to the required outcome.

B:

“per-lane tests show all links to the intended switch interface” addresses intermediate patching changed end-to-end lane mapping, but the current hardware or infrastructure issue is physically separate fabric paths were not actually deployed. The option “one-leaf shutdown leaves the required second path available” is more directly tied to the required outcome.

C:

“host power-off management remains reachable while data ports follow data fabric policy” addresses management and workload interface assignments are physically confused, but the current hardware or infrastructure issue is physically separate fabric paths were not actually deployed. The option “one-leaf shutdown leaves the required second path available” is more directly tied to the required outcome.

Question 460

At a GPU cluster site, an installer routes an InfiniBand uplink into an Ethernet-only switch port because connectors fit. Which remediation best targets the underlying cause?

  1. reconnect the BMC management cables to approved OOB network paths
  2. verify intended port media and network technology before recabling
  3. verify the complete port connectivity matrix for each leaf-spine pair
  4. reconcile transceiver serial cable label and both switch port IDs

Explanation

Correct Answer

B:

Correct. The underlying problem is cable and switch port protocol modes are mismatched. This intervention targets that mechanism. Confirm completion through endpoints negotiate correct fabric mode and establish healthy links.

Incorrect Answers

A:

“reconnect the BMC management cables to approved OOB network paths” addresses management and workload interface assignments are physically confused, but the current hardware or infrastructure issue is cable and switch port protocol modes are mismatched. The option “verify intended port media and network technology before recabling” is more directly tied to the required outcome.

C:

“verify the complete port connectivity matrix for each leaf-spine pair” addresses link count was checked without verifying individual required adjacency, but the current hardware or infrastructure issue is cable and switch port protocol modes are mismatched. The option “verify intended port media and network technology before recabling” is more directly tied to the required outcome.

D:

Useful for cabling documentation omits the identifiers needed for fault isolation, but it does not remove the specific condition: cable and switch port protocol modes are mismatched.

NCP-AI Infrastructure (NCP-AII) Practice Tests

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