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NVIDIA Exam NCP-AIN Topic 1 Question 4 Discussion
Topic #: 1
[InfiniBand Configuration]
You are setting up PKey memberships for different tenants in an InfiniBand network. You want to ensure that some tenants have limited communication capabilities. Which PKey membership type allows members to communicate with full members but not with other members of the same type?
In InfiniBand networks, P_Keys (Partition Keys) control communication boundaries. Each port can belong to one or more partitions with either full or limited membership.
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 for multi-tenant security, where tenant ports can reach infrastructure ports (full members) but not other tenant ports (limited members).
Incorrect Options:
A & B are not valid InfiniBand P_Key types.
C (Full membership) allows unrestricted communication within the same partition.
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