NVIDIA NCP-ARI: NVIDIA-Certified Professional: AI Rack and Interconnect

Last checked October 22, 2026 against the official NVIDIA exam page.

1. Question 1High-Density Cabling Installation for AI Clusters

   A technician is told that a switch uses OSFP ports. Which statement about OSFP and QSFP form factors is correct?

   1. AForm factor does not matter as long as the speed matches, because the cage is rated for speed
   2. BOSFP and QSFP are the same size, so modules can be swapped freely between the two cage types
   3. COSFP and QSFP are different form factors, and the modules are not interchangeable
   4. DQSFP is a copper-only standard and OSFP is fiber-only because the cage pinout differs by family
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   Correct answer: C

   OSFP and QSFP are distinct mechanical form factors, so the transceivers and cages must match the port type. Matching speed alone does not make the modules compatible.

2. Question 2AI Infrastructure Basics for Data Centers

   A technician installs rack PDUs on a three-phase feed that supplies a high-density AI rack. Why must the load be balanced across the phases?

   1. ATo raise the negotiated speed of the rack's Ethernet and InfiniBand uplinks during peak traffic
   2. BTo keep the current on each phase within its rated limit and avoid overloading one phase
   3. CTo allow the rack to skip the grounding step during commissioning if the PDU phases are balanced
   4. DTo cut the number of interconnect cables needed between the servers by consolidating onto a patch panel
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   Correct answer: B

   Unbalanced phase loading can overload one phase even when total capacity is sufficient, which risks breaker trips and unsafe conditions. Balancing spreads the current evenly, and it does not affect link speed, grounding, or cable count.

3. Question 3Testing, Verification, and Documentation

   Which instrument measures the optical power loss of an installed fiber link so the technician can confirm it is within budget?

   1. AA thermal camera pointed at the rack door
   2. BA label printer
   3. CA multimeter used for resistance checks on copper
   4. DAn optical power meter
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   Correct answer: D

   An optical power meter, typically used with a light source, measures received power and loss against the link budget. A multimeter and thermal camera do not measure optical loss, and a label printer does not test links.

4. Question 4Safety, Standards, and Compliance

   Which two practices are required when performing electrical work on energized or high-power AI rack equipment? (Choose two.)

   1. ARemoving the grounding conductor while equipment is energized
   2. BFollowing lockout/tagout procedures to isolate and verify the power source
   3. CWearing the personal protective equipment specified for the environment
   4. DWorking alone to finish the task faster
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   Correct answer: B, C

   Lockout/tagout isolates hazardous energy, and PPE protects workers from electrical and arc hazards. Working alone and removing grounding conductors increase the risk of serious injury.

5. Question 5Pre-Deployment Planning and Site Assessment

   Before racks are delivered, what must a site survey confirm about the installation floor?

   1. AThat no cabling is needed in the room because power and data will reach the racks by wireless links
   2. BThat the building has no fire exits in the data hall because the design uses a single corridor
   3. CThat the floor has structural load capacity for the weight of the fully loaded racks
   4. DThat the floor color matches the company brand palette used in the lobby signage and the offices
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   Correct answer: C

   AI racks are very heavy, so the floor must support their fully loaded weight. Color, cabling, and fire exits are not the purpose of a load-capacity survey.