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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 20

Question 190

An engineer claims the change 'run supported concurrent GPU stress and interconnect health checks' restored readiness. Which measurable test result would substantiate that claim?

  1. an eight-GPU test completes with no Xid errors or missing peers
  2. bounded compute sample completes with correct results and no device error
  3. each process fits its assigned GPU and a representative batch completes
  4. end-to-end batch latency improves with measured transfer utilization

Explanation

Correct Answer

A:

Correct. It specifically tests the outcome of the approved remediation. The failure mechanism was multi-device concurrency and topology were not validated; the listed result demonstrates the expected behavior.

Incorrect Answers

B:

“bounded compute sample completes with correct results and no device error” addresses device enumeration is not sufficient evidence of functional compute readiness, but the current hardware or infrastructure issue is multi-device concurrency and topology were not validated. The option “an eight-GPU test completes with no Xid errors or missing peers” is more directly tied to the required outcome.

C:

“each process fits its assigned GPU and a representative batch completes” addresses per-device allocation and partitioning do not match application memory requirements, but the current hardware or infrastructure issue is multi-device concurrency and topology were not validated. The option “an eight-GPU test completes with no Xid errors or missing peers” is more directly tied to the required outcome.

D:

“end-to-end batch latency improves with measured transfer utilization” addresses memory movement and transfer path constrain end-to-end application throughput, but the current hardware or infrastructure issue is multi-device concurrency and topology were not validated. The option “an eight-GPU test completes with no Xid errors or missing peers” is more directly tied to the required outcome.

Question 191

A validation report notes: a compute server accepts a mixed-precision model but produces unexpected errors on an untested GPU architecture. What is the MOST defensible next action?

  1. build and verify a compatible CUDA runtime and kernel target
  2. run supported concurrent GPU stress and interconnect health checks
  3. verify NVLink paths and peer-to-peer transfer topology
  4. inspect per-rank memory placement and GPU resource partition assignments

Explanation

Correct Answer

A:

Correct. This directly resolves application binaries were not validated against installed GPU compute capability. A valid handover should also demonstrate representative kernels complete and outputs satisfy numerical tolerance.

Incorrect Answers

B:

“run supported concurrent GPU stress and interconnect health checks” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “build and verify a compatible CUDA runtime and kernel target” is more directly tied to the required outcome.

C:

“verify NVLink paths and peer-to-peer transfer topology” addresses local GPU interconnect bandwidth is degraded or uninitialized, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “build and verify a compatible CUDA runtime and kernel target” is more directly tied to the required outcome.

D:

“inspect per-rank memory placement and GPU resource partition assignments” addresses per-device allocation and partitioning do not match application memory requirements, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “build and verify a compatible CUDA runtime and kernel target” is more directly tied to the required outcome.

Question 192

The site has performed 'build and verify a compatible CUDA runtime and kernel target'. Which direct result is needed to close this issue rather than merely check a configuration?

  1. each process fits its assigned GPU and a representative batch completes
  2. bounded compute sample completes with correct results and no device error
  3. full-load clock traces match approved power and performance envelope
  4. representative kernels complete and outputs satisfy numerical tolerance

Explanation

Correct Answer

D:

Correct. The test directly checks whether application binaries were not validated against installed GPU compute capability has been remediated. That result supports operational acceptance rather than only configuration presence.

Incorrect Answers

A:

“each process fits its assigned GPU and a representative batch completes” addresses per-device allocation and partitioning do not match application memory requirements, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “representative kernels complete and outputs satisfy numerical tolerance” is more directly tied to the required outcome.

B:

“bounded compute sample completes with correct results and no device error” addresses device enumeration is not sufficient evidence of functional compute readiness, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “representative kernels complete and outputs satisfy numerical tolerance” is more directly tied to the required outcome.

C:

“full-load clock traces match approved power and performance envelope” addresses device performance is constrained by power or application clock policy, but the current hardware or infrastructure issue is application binaries were not validated against installed GPU compute capability. The option “representative kernels complete and outputs satisfy numerical tolerance” is more directly tied to the required outcome.

Question 193

An HGX server shows transient Xid errors only after a sustained thermal burn-in. Which corrective action is MOST appropriate before commissioning can proceed?

  1. inspect Xid logs and test board thermal power and interconnect limits under duration
  2. inspect throttling reasons power limits and authorized clock settings
  3. inspect per-rank memory placement and GPU resource partition assignments
  4. run supported concurrent GPU stress and interconnect health checks

Explanation

Correct Answer

A:

Correct. The underlying problem is short smoke checks missed load-dependent GPU faults. This intervention targets that mechanism. Confirm completion through prolonged stress run produces no new critical Xid events.

Incorrect Answers

B:

“inspect throttling reasons power limits and authorized clock settings” addresses device performance is constrained by power or application clock policy, but the current hardware or infrastructure issue is short smoke checks missed load-dependent GPU faults. The option “inspect Xid logs and test board thermal power and interconnect limits under duration” is more directly tied to the required outcome.

C:

Useful for per-device allocation and partitioning do not match application memory requirements, but it does not remove the specific condition: short smoke checks missed load-dependent GPU faults.

D:

“run supported concurrent GPU stress and interconnect health checks” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is short smoke checks missed load-dependent GPU faults. The option “inspect Xid logs and test board thermal power and interconnect limits under duration” is more directly tied to the required outcome.

Question 194

The implementation team reports that it has completed 'inspect Xid logs and test board thermal power and interconnect limits under duration'. Which evidence should the acceptance reviewer request?

  1. an eight-GPU test completes with no Xid errors or missing peers
  2. bounded compute sample completes with correct results and no device error
  3. prolonged stress run produces no new critical Xid events
  4. measured peer bandwidth matches the qualified platform acceptance floor

Explanation

Correct Answer

C:

Correct. This result validates the change in service conditions and is the closest evidence that short smoke checks missed load-dependent GPU faults is no longer causing the issue.

Incorrect Answers

A:

“an eight-GPU test completes with no Xid errors or missing peers” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is short smoke checks missed load-dependent GPU faults. The option “prolonged stress run produces no new critical Xid events” is more directly tied to the required outcome.

B:

“bounded compute sample completes with correct results and no device error” addresses device enumeration is not sufficient evidence of functional compute readiness, but the current hardware or infrastructure issue is short smoke checks missed load-dependent GPU faults. The option “prolonged stress run produces no new critical Xid events” is more directly tied to the required outcome.

D:

“measured peer bandwidth matches the qualified platform acceptance floor” addresses local GPU interconnect bandwidth is degraded or uninitialized, but the current hardware or infrastructure issue is short smoke checks missed load-dependent GPU faults. The option “prolonged stress run produces no new critical Xid events” is more directly tied to the required outcome.

Question 195

An NVIDIA infrastructure team reports this operational finding: an AI service repeatedly waits for host-to-device transfers even though GPU kernels execute quickly. Which action MOST directly addresses it?

  1. inspect per-rank memory placement and GPU resource partition assignments
  2. profile pinned-memory transfers and optimize host-device staging within policy
  3. profile CPU I/O preprocessing and feeding of GPU kernels
  4. run supported concurrent GPU stress and interconnect health checks

Explanation

Correct Answer

B:

Correct. The incident follows from memory movement and transfer path constrain end-to-end application throughput. This action changes the failing dependency, with end-to-end batch latency improves with measured transfer utilization as a measurable success criterion.

Incorrect Answers

A:

Useful for per-device allocation and partitioning do not match application memory requirements, but it does not remove the specific condition: memory movement and transfer path constrain end-to-end application throughput.

C:

“profile CPU I/O preprocessing and feeding of GPU kernels” addresses the input pipeline starves accelerators of batches, but the current hardware or infrastructure issue is memory movement and transfer path constrain end-to-end application throughput. The option “profile pinned-memory transfers and optimize host-device staging within policy” is more directly tied to the required outcome.

D:

“run supported concurrent GPU stress and interconnect health checks” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is memory movement and transfer path constrain end-to-end application throughput. The option “profile pinned-memory transfers and optimize host-device staging within policy” is more directly tied to the required outcome.

Question 196

An engineer claims the change 'profile pinned-memory transfers and optimize host-device staging within policy' restored readiness. Which measurable test result would substantiate that claim?

  1. each process fits its assigned GPU and a representative batch completes
  2. end-to-end batch latency improves with measured transfer utilization
  3. an eight-GPU test completes with no Xid errors or missing peers
  4. improved data loader throughput coincides with sustained GPU occupancy

Explanation

Correct Answer

B:

Correct. This is observable proof for the intended change, not just evidence that a command was issued. It establishes end-to-end batch latency improves with measured transfer utilization, addressing memory movement and transfer path constrain end-to-end application throughput.

Incorrect Answers

A:

“each process fits its assigned GPU and a representative batch completes” addresses per-device allocation and partitioning do not match application memory requirements, but the current hardware or infrastructure issue is memory movement and transfer path constrain end-to-end application throughput. The option “end-to-end batch latency improves with measured transfer utilization” is more directly tied to the required outcome.

C:

“an eight-GPU test completes with no Xid errors or missing peers” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is memory movement and transfer path constrain end-to-end application throughput. The option “end-to-end batch latency improves with measured transfer utilization” is more directly tied to the required outcome.

D:

“improved data loader throughput coincides with sustained GPU occupancy” addresses the input pipeline starves accelerators of batches, but the current hardware or infrastructure issue is memory movement and transfer path constrain end-to-end application throughput. The option “end-to-end batch latency improves with measured transfer utilization” is more directly tied to the required outcome.

Question 197

A validation report notes: a GPU runs at reduced clocks during peak inference yet nvidia-smi shows no thermal alarm. What is the MOST defensible next action?

  1. inspect Xid logs and test board thermal power and interconnect limits under duration
  2. inspect throttling reasons power limits and authorized clock settings
  3. inspect per-rank memory placement and GPU resource partition assignments
  4. build and verify a compatible CUDA runtime and kernel target

Explanation

Correct Answer

B:

Correct. This is the corrective step for device performance is constrained by power or application clock policy; it addresses the failure at its source. The confirming observation is full-load clock traces match approved power and performance envelope.

Incorrect Answers

A:

“inspect Xid logs and test board thermal power and interconnect limits under duration” addresses short smoke checks missed load-dependent GPU faults, but the current hardware or infrastructure issue is device performance is constrained by power or application clock policy. The option “inspect throttling reasons power limits and authorized clock settings” is more directly tied to the required outcome.

C:

Useful for per-device allocation and partitioning do not match application memory requirements, but it does not remove the specific condition: device performance is constrained by power or application clock policy.

D:

“build and verify a compatible CUDA runtime and kernel target” addresses application binaries were not validated against installed GPU compute capability, but the current hardware or infrastructure issue is device performance is constrained by power or application clock policy. The option “inspect throttling reasons power limits and authorized clock settings” is more directly tied to the required outcome.

Question 198

The site has performed 'inspect throttling reasons power limits and authorized clock settings'. Which direct result is needed to close this issue rather than merely check a configuration?

  1. representative kernels complete and outputs satisfy numerical tolerance
  2. each process fits its assigned GPU and a representative batch completes
  3. end-to-end batch latency improves with measured transfer utilization
  4. full-load clock traces match approved power and performance envelope

Explanation

Correct Answer

D:

Correct. This is observable proof for the intended change, not just evidence that a command was issued. It establishes full-load clock traces match approved power and performance envelope, addressing device performance is constrained by power or application clock policy.

Incorrect Answers

A:

“representative kernels complete and outputs satisfy numerical tolerance” addresses application binaries were not validated against installed GPU compute capability, but the current hardware or infrastructure issue is device performance is constrained by power or application clock policy. The option “full-load clock traces match approved power and performance envelope” is more directly tied to the required outcome.

B:

“each process fits its assigned GPU and a representative batch completes” addresses per-device allocation and partitioning do not match application memory requirements, but the current hardware or infrastructure issue is device performance is constrained by power or application clock policy. The option “full-load clock traces match approved power and performance envelope” is more directly tied to the required outcome.

C:

“end-to-end batch latency improves with measured transfer utilization” addresses memory movement and transfer path constrain end-to-end application throughput, but the current hardware or infrastructure issue is device performance is constrained by power or application clock policy. The option “full-load clock traces match approved power and performance envelope” is more directly tied to the required outcome.

Question 199

A local distributed training test reports poor NCCL all-reduce performance despite healthy PCIe enumeration. Which corrective action is MOST appropriate before commissioning can proceed?

  1. run NCCL topology-sensitive benchmarks and isolate the failing local interconnect
  2. run supported concurrent GPU stress and interconnect health checks
  3. verify NVLink paths and peer-to-peer transfer topology
  4. inspect Xid logs and test board thermal power and interconnect limits under duration

Explanation

Correct Answer

A:

Correct. This directly resolves intra-node collective communication path is not delivering expected bandwidth. A valid handover should also demonstrate NCCL output meets qualified intra-node bandwidth for the GPU count.

Incorrect Answers

B:

“run supported concurrent GPU stress and interconnect health checks” addresses multi-device concurrency and topology were not validated, but the current hardware or infrastructure issue is intra-node collective communication path is not delivering expected bandwidth. The option “run NCCL topology-sensitive benchmarks and isolate the failing local interconnect” is more directly tied to the required outcome.

C:

“verify NVLink paths and peer-to-peer transfer topology” addresses local GPU interconnect bandwidth is degraded or uninitialized, but the current hardware or infrastructure issue is intra-node collective communication path is not delivering expected bandwidth. The option “run NCCL topology-sensitive benchmarks and isolate the failing local interconnect” is more directly tied to the required outcome.

D:

“inspect Xid logs and test board thermal power and interconnect limits under duration” addresses short smoke checks missed load-dependent GPU faults, but the current hardware or infrastructure issue is intra-node collective communication path is not delivering expected bandwidth. The option “run NCCL topology-sensitive benchmarks and isolate the failing local interconnect” is more directly tied to the required outcome.

Question 200

During an AI-factory acceptance review, the following condition is observed: a GPU training cluster mounts a third-party NFS share with read-only export options and cannot write checkpoints. What should the infrastructure engineer do FIRST?

  1. align initiator and target transport addresses with their intended network
  2. standardize mount paths and validated namespace settings across nodes
  3. align approved NFS export permissions and mount options with least privilege
  4. apply tenant-scoped credentials and server-side file access rules

Explanation

Correct Answer

C:

Correct. This is the corrective step for export and client mount permissions contradict the checkpoint workload; it addresses the failure at its source. The confirming observation is a non-root training job writes and restores a test checkpoint correctly.

Incorrect Answers

A:

“align initiator and target transport addresses with their intended network” addresses fabric endpoint addressing does not match the approved storage path, but the current hardware or infrastructure issue is export and client mount permissions contradict the checkpoint workload. The option “align approved NFS export permissions and mount options with least privilege” is more directly tied to the required outcome.

B:

“standardize mount paths and validated namespace settings across nodes” addresses filesystem mount namespace and path consistency were not established, but the current hardware or infrastructure issue is export and client mount permissions contradict the checkpoint workload. The option “align approved NFS export permissions and mount options with least privilege” is more directly tied to the required outcome.

D:

Useful for storage identity and access isolation are absent, but it does not remove the specific condition: export and client mount permissions contradict the checkpoint workload.

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