NVIDIA NCP-AII Practice Test 2
Question 10
During an NVIDIA AI factory acceptance test, engineers discover: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. Which TWO complementary elements are needed: the correct technical action and the strongest independent diagnostic evidence? Select TWO answers.
- Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit.
- Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence.
- Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections.
- Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership.
- Use approved authenticated BMC inventory endpoints, distinguish read-only calls from power actions and corroborate returned component state.
Explanation
Correct Answers
B:This is an appropriate correction for DGX rack load and rail placement: Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
C:This is the direct operational evidence to investigate: Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
Incorrect Answers
A:This tempting but unsafe shortcut is not a sufficient remediation for DGX rack load and rail placement: Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit. A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
D:This alternative is relevant to Commissioning evidence and rack acceptance gate but does not directly resolve the current DGX rack load and rail placement issue: Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
E:This alternative is relevant to Redfish inventory and IPMI management boundaries but does not directly resolve the current DGX rack load and rail placement issue: Use approved authenticated BMC inventory endpoints, distinguish read-only calls from power actions and corroborate returned component state. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
Question 11
A production GPU cluster review identifies this condition: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. Which diagnostic evidence should be obtained FIRST to substantiate the likely fault or configuration gap? Select ONE best answer.
- Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit.
- Inspect management API target paths, access scopes, sensor values, chassis actions and independent host inventory.
- Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership.
- Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections.
Explanation
Correct Answer
D:This is the direct operational evidence to investigate: Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
Incorrect Answers
A:This tempting but unsafe shortcut is not a sufficient remediation for DGX rack load and rail placement: Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment. The proportionate action is: Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence.
B:This alternative is relevant to Redfish inventory and IPMI management boundaries but does not directly resolve the current DGX rack load and rail placement issue: Inspect management API target paths, access scopes, sensor values, chassis actions and independent host inventory. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
C:This alternative is relevant to Commissioning evidence and rack acceptance gate but does not directly resolve the current DGX rack load and rail placement issue: Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
Question 12
In a professional AI infrastructure deployment, a technician observes: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. After corrective work, which observable result BEST confirms that the requirement is met? Select ONE best answer.
- Sustained representative load runs without overcurrent events, while reserve capacity satisfies the approved electrical design.
- All nodes are securely mounted in compatible rack positions and mechanical inspection passes without blocked service access.
- The commissioned node produces a verifiable boot integrity record and disallowed boot changes are detected or blocked.
- Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit.
Explanation
Correct Answer
B:This is an observable verified result, not merely a claimed configuration change: All nodes are securely mounted in compatible rack positions and mechanical inspection passes without blocked service access. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
Incorrect Answers
A:This alternative is relevant to GPU node peak power budgeting but does not directly resolve the current DGX rack load and rail placement issue: Sustained representative load runs without overcurrent events, while reserve capacity satisfies the approved electrical design. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
C:This alternative is relevant to TPM state and measured secure boot but does not directly resolve the current DGX rack load and rail placement issue: The commissioned node produces a verifiable boot integrity record and disallowed boot changes are detected or blocked. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support.
D:This tempting but unsafe shortcut is not a sufficient remediation for DGX rack load and rail placement: Assume that any 19-inch rack carrying enough free rack units automatically supports any GPU chassis weight or rail kit. Observed scenario: A facility proposes installing GPU servers in an aisle rack that lacks approved depth and mechanical support. The governing mechanism is: Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment. The proportionate action is: Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence. A direct check is: Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections. The acceptance condition is: All nodes are securely mounted in compatible rack positions and mechanical inspection passes without blocked service access.
Question 13
The cluster operations team needs to evaluate this situation: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. Which operational response is MOST appropriate to address the root issue? Select ONE best answer.
- Use a stage-gated acceptance checklist covering facility, firmware, nodes, fabrics, storage, security and test evidence.
- Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence.
- Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
Explanation
Correct Answer
C:This is an appropriate correction for Dual-feed rack power and PDU mapping: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
Incorrect Answers
A:This alternative is relevant to Commissioning evidence and rack acceptance gate but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Use a stage-gated acceptance checklist covering facility, firmware, nodes, fabrics, storage, security and test evidence. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
B:This alternative is relevant to DGX rack load and rail placement but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
D:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure.
Question 14
At a multi-node AI infrastructure handoff, the team records: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. Which underlying infrastructure principle BEST explains the issue? Select ONE best answer.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- Heavy GPU systems require rated mechanical support and correct mounting; a rack-unit count alone does not establish safe physical deployment.
- Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords.
- Grounding and electrostatic protection limit personnel hazards and component damage; successful boot alone does not establish safe installation.
Explanation
Correct Answer
C:This is the governing infrastructure principle: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
Incorrect Answers
A:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords.
B:That option concerns DGX rack load and rail placement. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
D:That option concerns Rack bonding grounding and ESD handling. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
Question 15
During an NVIDIA AI factory acceptance test, engineers discover: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. Which diagnostic evidence should be obtained FIRST to substantiate the likely fault or configuration gap? Select ONE best answer.
- Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership.
- Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
Explanation
Correct Answer
D:This is the direct operational evidence to investigate: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
Incorrect Answers
A:This alternative is relevant to DGX rack load and rail placement but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Review rack load calculations, platform dimensions, rail kits, equipment placement plan and recorded installation inspections. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
B:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
C:This alternative is relevant to Commissioning evidence and rack acceptance gate but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Review installation runbook, signed component inventory, issue register, test reports and acceptance ownership. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
Question 16
A production GPU cluster review identifies this condition: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. After corrective work, which observable result BEST confirms that the requirement is met? Select ONE best answer.
- Authorized operators can manage an offline host through the protected BMC while unauthorized network access is denied.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
- Under representative load each node stays within supported inlet limits without avoidable thermal throttling or recirculation.
Explanation
Correct Answer
C:This is an observable verified result, not merely a claimed configuration change: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
Incorrect Answers
A:This alternative is relevant to BMC network bring-up and out-of-band separation but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Authorized operators can manage an offline host through the protected BMC while unauthorized network access is denied. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
B:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. A DGX node has dual power supplies but both cords terminate on the same single-source PDU. Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords.
D:This alternative is relevant to Cold aisle inlet air and thermal envelope but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Under representative load each node stays within supported inlet limits without avoidable thermal throttling or recirculation. Observed scenario: A DGX node has dual power supplies but both cords terminate on the same single-source PDU.
Question 17
In a professional AI infrastructure deployment, a technician observes: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. Which operational response is MOST appropriate to address the root issue? Select ONE best answer.
- Verify approved protective grounding, ESD procedures and component handling before energizing or servicing rack hardware.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget.
- Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence.
Explanation
Correct Answer
C:This is an appropriate correction for Dual-feed rack power and PDU mapping: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
Incorrect Answers
A:This alternative is relevant to Rack bonding grounding and ESD handling but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Verify approved protective grounding, ESD procedures and component handling before energizing or servicing rack hardware. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
B:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
D:This alternative is relevant to DGX rack load and rail placement but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Check rack dimensions, floor load and rail compatibility, then place approved chassis using the vendor's supported installation sequence. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
Question 18
The cluster operations team needs to evaluate this situation: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. Which underlying infrastructure principle BEST explains the issue? Select ONE best answer.
- Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- High-speed physical integrity depends on correct endpoints and cable handling; a green port LED cannot validate topology.
- Cooling effectiveness depends on local inlet air and airflow separation; a room-average temperature cannot establish adequate GPU cooling.
Explanation
Correct Answer
A:This is the governing infrastructure principle: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
Incorrect Answers
B:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords.
C:That option concerns Cable mapping labeling and bend radius. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
D:That option concerns Cold aisle inlet air and thermal envelope. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
Question 19
At a multi-node AI infrastructure handoff, the team records: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. Which diagnostic evidence should be obtained FIRST to substantiate the likely fault or configuration gap? Select ONE best answer.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- Review DOM received power, pre/post-FEC BER, symbol or CRC counters, retrain events and clean-connector test results.
- Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
- Review inlet and exhaust sensor trends, aisle containment, rack occupancy, fan telemetry and thermal throttling events.
Explanation
Correct Answer
C:This is the direct operational evidence to investigate: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
Incorrect Answers
A:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget.
B:This alternative is relevant to Optical received power and signal integrity but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Review DOM received power, pre/post-FEC BER, symbol or CRC counters, retrain events and clean-connector test results. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
D:This alternative is relevant to Cold aisle inlet air and thermal envelope but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Review inlet and exhaust sensor trends, aisle containment, rack occupancy, fan telemetry and thermal throttling events. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
Question 20
During an NVIDIA AI factory acceptance test, engineers discover: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. Which TWO complementary elements are needed: the correct technical action and the strongest independent diagnostic evidence? Select TWO answers.
- Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs.
- Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget.
- Inspect facility grounding tests, rack bonds, wrist-strap practice, ESD storage and chassis service records.
- Count two server power supplies as redundancy even when both draw from the same single point of failure.
- Provision unique BMC addresses on protected out-of-band management, rotate initial credentials and test access separately from host networking.
Explanation
Correct Answers
A:This is the direct operational evidence to investigate: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
B:This is an appropriate correction for Dual-feed rack power and PDU mapping: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
Incorrect Answers
C:This alternative is relevant to Rack bonding grounding and ESD handling but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Inspect facility grounding tests, rack bonds, wrist-strap practice, ESD storage and chassis service records. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.
D:This tempting but unsafe shortcut is not a sufficient remediation for Dual-feed rack power and PDU mapping: Count two server power supplies as redundancy even when both draw from the same single point of failure. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed. The governing mechanism is: Power redundancy depends on independent supply paths and properly sized capacity, not merely on the number of power cords. The proportionate action is: Trace each power supply to independent approved rack feeds and test safe loss of either feed within the supported power budget. A direct check is: Inspect PDU outlet maps, breaker assignments, dual-cord wiring, load readings and approved failover test logs. The acceptance condition is: A planned single-feed isolation leaves required servers within power limits and serving their intended workloads.
E:This alternative is relevant to BMC network bring-up and out-of-band separation but does not directly resolve the current Dual-feed rack power and PDU mapping issue: Provision unique BMC addresses on protected out-of-band management, rotate initial credentials and test access separately from host networking. Observed scenario: A rack installation alternates A and B outlet labels without verifying which upstream electrical branch actually powers each feed.