NCP-AIN Exam Dumps : NVIDIA-Certified Professional AI Networking

InDPU Mode, theARM cores on BlueFieldown theNIC data path, while still allowing thehost system to access the DPU OS (via OOB or virtio).

From NVIDIA BlueField Documentation:

"In DPU Mode, the data path is offloaded to the BlueField Arm cores, enabling advanced security and networking functions, while still allowing host access to the BlueField OS."

This is different from:

NIC Mode: Data path controlled by host, ARM cores inactive.

Separated Host Mode: Complete isolation; host cannot access DPU OS.

Restricted Mode: Limited host access to DPU OS, but without full offload capabilities.

MLNX_OFED (Mellanox OpenFabrics Enterprise Distribution) is an NVIDIA-tested and packaged version of the OpenFabrics Enterprise Distribution (OFED) for Linux. It provides the necessary drivers and tools to support InfiniBand and Ethernet interconnects using the same RDMA (Remote Direct Memory Access) and kernel bypass APIs. MLNX_OFED enables high-performance networking capabilities essential for AI clusters, including support for up to 400Gb/s InfiniBand and RoCE (RDMA over Converged Ethernet).​

Reference Extracts from NVIDIA Documentation:

"MLNX_OFED is an NVIDIA tested and packaged version of OFED that supports two interconnect types using the same RDMA (remote DMA) and kernel bypass APIs called OFED verbs – InfiniBand and Ethernet."​

"Up to 400Gb/s InfiniBand and RoCE (based on the RDMA over Converged Ethernet standard) over 10/25/40/50/100/200/400GbE are supported."​

In InfiniBand networks,P_Keys (Partition Keys)control communication boundaries. Each port can belong to one or more partitions with eitherfullorlimitedmembership.

From NVIDIA InfiniBand Documentation (Partitioning and P_Keys):

"A limited (or partial) membership permits a port to communicate only with other ports in the same partition that have full membership. It cannot communicate with other limited members, even if they are in the same P_Key partition."

This makes limited/partial membership ideal formulti-tenant security, where tenant ports can reach infrastructure ports (full members) butnotother tenant ports (limited members).

Incorrect Options:

A & Bare not valid InfiniBand P_Key types.

C (Full membership)allows unrestricted communication within the same partition.