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

To enforce strict multi-tenancy , where:

Tenant A’s GPU cannot talk to Tenant B’s GPU

But both can access shared storage

The correct solution is:

Storage system → Full PKey membership

Each tenant’s GPU → Limited PKey membership

From the NVIDIA InfiniBand P_Key Partitioning Guide :

"A port with limited membership can only communicate with full members of the same PKey. It cannot communicate with other limited members, even within the same partition."

This isolates tenants from each other , while allowing shared access to storage .

Incorrect Options:

A permits tenant-to-tenant communication.

B isolates everything, including access to storage.

C prevents GPU access to storage.

To check the status and link layer of InfiniBand interfaces, the ibstat command is used. For example:​

ibstat -d mlx5_0

This command provides detailed information about the InfiniBand device, including its state (e.g., Active), physical state (e.g., LinkUp), and link layer (e.g., InfiniBand).​

The Network Traffic Map in NVIDIA's Unified Fabric Manager (UFM) provides a visual representation of the network topology and traffic flows, which is particularly useful for identifying congestion points, verifying network configurations, and optimizing workload distribution.

However, when troubleshooting a single node's hardware failure, the Network Traffic Map is less effective, as it focuses on network-level issues rather than individual hardware components.​