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質問 # 53
Why use NVIDIA GPUDirect Storage in an AI cluster?
正解：A
解説：
GPUDirect Storage allows GPUs to directly access NVMe storage without CPU intervention, enabling high-throughput, low-latency data transfers that bypass traditional CPU-centric I/O paths and accelerate data-intensive AI workloads.
質問 # 54
In your AI data center, you are responsible for deploying and managing multiple machine learning models in production. To streamline this process, you decide to implement MLOps practices with a focus on job scheduling and orchestration. Which of the following strategies is most aligned with achieving reliable and efficient model deployment?
正解：A
解説：
Using a CI/CD pipeline to automate model training, validation, and deployment (A) is the most aligned with reliable and efficient MLOps practices. Continuous Integration/Continuous Deployment (CI/CD) automates the ML lifecycle-building, testing, and deploying models-ensuring consistency, reducing errors, and enabling rapid iteration. Tools like Kubeflow or Jenkins, integrated with NVIDIA GPU Operator, schedule jobs efficiently on GPU clusters, validating models in staging environments before production rollout.
* Running all jobs simultaneously(B) risks resource contention and instability, not efficiency.
* Manual triggering(C) is slow and error-prone, counter to MLOps automation goals.
* Direct deployment without staging(D) skips validation, risking unreliable models in production.
NVIDIA supports CI/CD for AI deployment in its MLOps guidelines (A).
質問 # 55
You are responsible for scaling an AI infrastructure that processes real-time data using multiple NVIDIA GPUs. During peak usage, you notice significant delays in data processing times, even though the GPU utilization is below 80%. What is the most likely cause of this bottleneck?
正解：D
解説：
Inefficient data transfer between nodes in the cluster (D) is the most likely cause of delays when GPU utilization is below 80%. In a multi-GPU setup processing real-time data, bottlenecks often arise from slow inter-node communication rather than GPU compute capacity. If data cannot move quickly between nodes (e.
g., due to suboptimal networking like low-bandwidth Ethernet instead of InfiniBand or NVLink), GPUs wait idle, causing delays despite low utilization.
* High CPU usage(A) could bottleneck preprocessing, but GPU utilization would likely be even lower if CPUs were the sole issue.
* Overprovisioning(B) would result in idle GPUs, but not necessarily delays unless misconfigured.
* Insufficient memory bandwidth(C) would typically push GPU utilization higher, not keep it below
80%.
NVIDIA recommends high-speed interconnects (e.g., NVLink, InfiniBand) for efficient data transfer in distributed AI setups (D).
質問 # 56
What is a key architectural difference between AI training and inference?
正解：B
解説：
AI training involves iterative optimization of model parameters using large datasets, which demands high compute throughput, while inference focuses on executing a trained model to produce predictions, where minimizing response time and ensuring low latency are the primary architectural concerns.
質問 # 57
A financial institution is implementing an AI-driven fraud detection system that needs to process millions of transactions daily in real-time. The system must rapidly identify suspicious activity and trigger alerts, while also continuously learning from new data to improve accuracy. Which architecture is most appropriate for this scenario?
正解：C
解説：
A hybrid setup with multi-GPU servers (e.g., NVIDIA DGX) for training and edge devices (e.g., NVIDIA Jetson) for inference is most appropriate. Multi-GPU servers handle continuous training on large datasets with high compute power, while edge devices enable low-latency inference for real-time fraud detection, balancing scalability and speed. Option A (single GPU) lacks scalability. Option B (edge-only ARM) can't handle training demands. Option D (CPU-based) sacrifices GPU acceleration. NVIDIA's fraud detection architectures endorse this hybrid model.
質問 # 58
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さらに、CertJuken NCA-AIIOダンプの一部が現在無料で提供されています：https://drive.google.com/open?id=1HZCQl9k4HhkHli_eiPUxBu4gWAs8Zg-f