NVIDIA NVLink is a high-bandwidth interconnect technology designed primarily to accelerate communication between GPUs. Within systems such as the Cisco UCS C885A M8 equipped with NVIDIA HGX H100 or H200 GPUs, NVLink creates a high-speed GPU interconnect that allows accelerator devices to exchange data substantially more efficiently than would be possible through conventional host-mediated communication paths.
Cisco specifically documents that the eight NVIDIA H200 SXM GPUs in the C885A M8 are interconnected through high-speed NVLink interconnects . Cisco positions this architecture for demanding workloads such as large language model training, fine-tuning, inference, and RAG, where frequent exchange of tensors, gradients, and intermediate values between GPUs can become a major performance constraint.
Option A concerns remote GPU access and resource virtualization, which require separate virtualization or orchestration technologies. Option B describes platform power and thermal management rather than interconnect functionality. Option C incorrectly characterizes NVLink as a secure external-storage transport; storage connectivity instead uses technologies such as Ethernet/RDMA, NVMe, GPUDirect Storage, or Fibre Channel depending on the architecture.
The defining examination concept is therefore direct, high-bandwidth, low-latency communication among GPUs within an accelerated computing platform.
Study Guide Reference: AI Infrastructure Components and Architecture — GPU architecture, GPU interconnects, compute performance, latency, and scalability.
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