NVIDIA-Certified Professional AI Networking (NCP-AIN)

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Troubleshooting ToolsNCP-AIN practice

A WJH event identifies a buffer-related drop during a synchronized transfer burst. Which next investigation is most consistent with that evidence?

Select one answerAInspect only the management authentication policy.BCorrelate queue occupancy, offered traffic, and congestion-control behavior on the affected path.CChange tenant route targets without examining the queueing evidence.DReinstall GPU drivers before checking the reported buffer constraint.

Kubernetes IntegrationNCP-AIN practice

A Kubernetes team installs the Network Operator 25.7 Helm chart without enabling automatic policy creation. The operator is running, but the desired networking driver and RDMA device plugin have not been configured. What should the team create next?

Select one answerAA NetworkAttachmentDefinition alone, without declaring driver or device-plugin management.BA pod resource request alone, without exposing the requested resource.CA NicClusterPolicy describing the required networking components.DA second operator replica without any desired component policy.

AI Data Center Design and OptimizationNCP-AIN practice

A GPU server stops responding to its operating-system network during maintenance. The operations team still needs remote power control and console access through its baseboard management controller. Which part of the AI data-center design should provide this connectivity?

Select one answerAThe out-of-band management network connected to the BMC.BThe compute fabric reached through the failed host operating system.CThe storage fabric reached through the host's mounted network interface.DThe tenant overlay attached to the host's training container.

NVIDIA InfiniBand NetworkingNCP-AIN practice

A newly connected InfiniBand fabric has working physical links, but its ports have not completed subnet initialization. No subnet manager is running. Which action is required to establish the managed subnet?

Select one answerAStart and configure a supported subnet manager on the intended InfiniBand subnet.BConfigure management Ethernet IP addresses only, without starting a subnet manager.CEnable IPoIB on the hosts while leaving subnet initialization unmanaged.DAssign tenant names to the inventory without initializing the fabric.

Troubleshooting ToolsNCP-AIN practice

A Cumulus Linux 5.10 switch has low CPU usage, but new forwarding entries cannot be installed. The engineer suspects a hardware table is full. Which diagnostic is most directly relevant?

Select one answerAA CPU-only process listing.BThe cl-resource-query hardware resource report.CA management-interface ICMP test.DA disk-space report without hardware resource information.

NVIDIA Spectrum NetworkingNCP-AIN practice

Two departments use overlapping private IP addresses in an EVPN fabric. Their routes must remain isolated even though they share the same physical switches. Which design provides separate routing contexts?

Select one answerAPut both departments in one VRF and distinguish them only by route descriptions.BUse different VLAN names while retaining one overlapping tenant routing table.CAssign both tenants the same VRF and import all of their routes without filtering.DAssign each department its own VRF and appropriate tenant overlay mapping.

Troubleshooting ToolsNCP-AIN practice

An engineer needs a human-readable inventory of InfiniBand nodes, port identities, and their links before comparing the fabric with the cabling plan. Which utility produces a subnet topology discovery?

Select one answerAib_write_bw.Bibnetdiscover.Cibping.Dibstat on one local adapter only.

NVIDIA InfiniBand NetworkingNCP-AIN practice

Two teams share an InfiniBand fabric but must communicate only with the endpoints assigned to their respective network partitions. Which native configuration provides this separation?

Select one answerASeparate management VLANs while leaving the InfiniBand membership unrestricted.BDifferent hostnames while retaining common unrestricted data-path membership.CA shared unrestricted PKey for all tenant endpoints.DAppropriate PKey partitions and endpoint membership enforced by the fabric management configuration.

NVIDIA Spectrum NetworkingNCP-AIN practice

An engineer has new BGP and EVPN configurations for an AI fabric but no maintenance window on the physical switches. Which use of NVIDIA Air is most appropriate at this stage?

Select one answerACertify the physical transceivers' optical power levels from virtual switch state.BUse simulated link rates as an exact measurement of production RDMA throughput.CTreat a successful virtual boot as sufficient acceptance of the complete fabric.DBuild a representative digital twin and test the configuration and reachability there.

Automation and ConfigurationNCP-AIN practice

An Ansible project configures both spine and leaf switches. Spines need only underlay settings, while leaves also need tenant VNIs. How should the inventory represent these differences?

Select one answerAUse role-based groups and scoped variables, with host variables for unique values.BPut all spine and leaf settings into one identical global variable set.CApply tenant VNI settings to spines and ignore resulting role mismatches.DCopy the full playbook for every device instead of separating data from tasks.

NVIDIA InfiniBand NetworkingNCP-AIN practice

A UFM operator wants to see whether an AI workload concentrates traffic on a small set of fabric links while others remain lightly used. Which view is most directly suited to this question?

Select one answerAOnly the subnet manager's process uptime.BOnly an inventory of installed host drivers.CThe fabric traffic map and its bandwidth distribution views.DOnly the total number of discovered endpoints.

Automation and ConfigurationNCP-AIN practice

An administrator has staged several Cumulus Linux 5.10 NVUE changes but has not applied them. The change review requires a comparison with the configuration currently applied to the switch. Which NVUE operation provides that comparison?

Select one answerAnv config apply without first reviewing the pending changes.Bnv show interface counters without comparing configuration revisions.Cnv config save used as a substitute for a revision comparison.Dnv config diff between the pending and applied revisions.

NVIDIA Spectrum NetworkingNCP-AIN practice

A host deployment is standardized on DOCA 2.9. It needs the MLNX_OFED drivers and tools but does not require additional DOCA libraries. Which documented host profile matches that requirement?

Select one answerAdoca-ofed.Bdoca-all because every host requires all DOCA libraries.Cdoca-networking when only the OFED-equivalent driver-and-tool subset is requested.Ddoca-roce while assuming it provides every component of the full OFED profile.

NVIDIA Spectrum NetworkingNCP-AIN practice

A Cumulus Linux 5.9 switch currently uses lossy RoCE mode. The approved design now requires both ECN and PFC. Which NVUE sequence explicitly changes the mode and applies it?

Select one answerAnv set qos roce mode lossy, followed by nv config apply.Bnv set qos roce mode lossless, followed by nv config apply.Cnv show qos roce, followed by nv config diff.Dnv unset qos roce, followed by nv config apply.

NVIDIA InfiniBand NetworkingNCP-AIN practice

An InfiniBand QoS policy assigns an application a service level, but the engineer must determine which queueing resources carry it at each switch. Which configuration establishes that relationship?

Select one answerAThe PKey value alone, without any SL-to-VL policy.BThe management IP prefix assigned to the server.CThe SL-to-VL mapping for the relevant ports and paths.DThe order of endpoint GUIDs in a device inventory without a mapping policy.

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NVIDIA-Certified Professional AI Networking (NCP-AIN)

Exam practice questions

15 / 132 questions

Free preview · Answers and explanations includedPage 1 of 2

Troubleshooting ToolsNCP-AIN practice

A WJH event identifies a buffer-related drop during a synchronized transfer burst. Which next investigation is most consistent with that evidence?

Kubernetes IntegrationNCP-AIN practice

A Kubernetes team installs the Network Operator 25.7 Helm chart without enabling automatic policy creation. The operator is running, but the desired networking driver and RDMA device plugin have not been configured. What should the team create next?

AI Data Center Design and OptimizationNCP-AIN practice

A GPU server stops responding to its operating-system network during maintenance. The operations team still needs remote power control and console access through its baseboard management controller. Which part of the AI data-center design should provide this connectivity?

NVIDIA InfiniBand NetworkingNCP-AIN practice

A newly connected InfiniBand fabric has working physical links, but its ports have not completed subnet initialization. No subnet manager is running. Which action is required to establish the managed subnet?

Troubleshooting ToolsNCP-AIN practice

A Cumulus Linux 5.10 switch has low CPU usage, but new forwarding entries cannot be installed. The engineer suspects a hardware table is full. Which diagnostic is most directly relevant?

Select one answerAA CPU-only process listing.BThe cl-resource-query hardware resource report.CA management-interface ICMP test.DA disk-space report without hardware resource information.

NVIDIA Spectrum NetworkingNCP-AIN practice

Two departments use overlapping private IP addresses in an EVPN fabric. Their routes must remain isolated even though they share the same physical switches. Which design provides separate routing contexts?

Troubleshooting ToolsNCP-AIN practice

An engineer needs a human-readable inventory of InfiniBand nodes, port identities, and their links before comparing the fabric with the cabling plan. Which utility produces a subnet topology discovery?

Select one answerAib_write_bw.Bibnetdiscover.Cibping.Dibstat on one local adapter only.

NVIDIA InfiniBand NetworkingNCP-AIN practice

Two teams share an InfiniBand fabric but must communicate only with the endpoints assigned to their respective network partitions. Which native configuration provides this separation?

NVIDIA Spectrum NetworkingNCP-AIN practice

An engineer has new BGP and EVPN configurations for an AI fabric but no maintenance window on the physical switches. Which use of NVIDIA Air is most appropriate at this stage?

Automation and ConfigurationNCP-AIN practice

An Ansible project configures both spine and leaf switches. Spines need only underlay settings, while leaves also need tenant VNIs. How should the inventory represent these differences?

NVIDIA InfiniBand NetworkingNCP-AIN practice

A UFM operator wants to see whether an AI workload concentrates traffic on a small set of fabric links while others remain lightly used. Which view is most directly suited to this question?

Automation and ConfigurationNCP-AIN practice

An administrator has staged several Cumulus Linux 5.10 NVUE changes but has not applied them. The change review requires a comparison with the configuration currently applied to the switch. Which NVUE operation provides that comparison?

NVIDIA Spectrum NetworkingNCP-AIN practice

A host deployment is standardized on DOCA 2.9. It needs the MLNX_OFED drivers and tools but does not require additional DOCA libraries. Which documented host profile matches that requirement?

NVIDIA Spectrum NetworkingNCP-AIN practice

A Cumulus Linux 5.9 switch currently uses lossy RoCE mode. The approved design now requires both ECN and PFC. Which NVUE sequence explicitly changes the mode and applies it?

NVIDIA InfiniBand NetworkingNCP-AIN practice

An InfiniBand QoS policy assigns an application a service level, but the engineer must determine which queueing resources carry it at each switch. Which configuration establishes that relationship?

Complete your exam preparation

Continue with the full question bank

Practise free with answers, explanations, and Community discussions. Join Community to unlock the complete question bank and timed mock exams.

Join Community Choose access for your certification