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NVIDIA-Certified Associate AI Infrastructure and Operations Sample Questions (Q51-Q56):
NEW QUESTION # 51
You are managing an AI training workload that requires high availability and minimal latency. The data is stored across multiple geographically dispersed data centers, and the compute resources are provided by a mix of on-premises GPUs and cloud-based instances. The model training has been experiencing inconsistent performance, with significant fluctuations in processing time and unexpected downtime. Which of the following strategies is most effective in improving the consistency and reliability of the AI training process?
Answer: C
Explanation:
Implementing a hybrid load balancer (B) dynamically distributes workloads across cloud and on-premises GPUs, improving consistency and reliability. In a geographically dispersed setup, latency and downtime arise from uneven resource utilization and network variability. A hybrid load balancer (e.g., using Kubernetes with NVIDIA GPU Operator or cloud-native solutions) optimizes workload placement based on availability, latency, and GPU capacity, reducing fluctuations and ensuring high availability by rerouting tasks during failures.
* Upgrading GPU drivers(A) improves performance but doesn't address distributed system issues.
* Single-cloud provider(C) simplifies management but sacrifices on-premises resources and may not reduce latency.
* Centralized data(D) reduces network hops but introduces a single point of failure and latency for distant nodes.
NVIDIA supports hybrid cloud strategies for AI training, making (B) the best fit.
NEW QUESTION # 52
A company is using a multi-GPU server for training a deep learning model. The training process is extremely slow, and after investigation, it is found that the GPUs are not being utilized efficiently. The system uses NVLink, and the software stack includes CUDA, cuDNN, and NCCL. Which of the following actions is most likely to improve GPU utilization and overall training performance?
Answer: D
Explanation:
Increasing the batch size (D) is most likely to improve GPU utilization and training performance. Larger batch sizes allow GPUs to process more data per iteration, maximizing compute throughput and reducing idle time, especially with NVLink's high-bandwidth inter-GPU communication. This leverages CUDA, cuDNN, and NCCL efficiently, assuming memory capacity permits.
* Mixed-precision training(A) boosts efficiency but may not address low utilization if batch size is the bottleneck.
* Disabling NVLink(B) slows communication, worsening performance.
* Updating CUDA(C) might help compatibility but not utilization directly.
NVIDIA recommends batch size tuning for multi-GPU setups (D).
NEW QUESTION # 53
In an effort to improve energy efficiency in your AI infrastructure using NVIDIA GPUs, you're considering several strategies. Which of the following would most effectively balance energy efficiency with maintaining performance?
Answer: D
Explanation:
Employing NVIDIA GPU Boost technology to dynamically adjust clock speeds is the most effective strategy to balance energy efficiency and performance in an AI infrastructure. GPU Boost, available on NVIDIA GPUs like A100, adjusts clock speeds and voltage based on workload demands and thermal conditions, optimizing Performance Per Watt. This ensures high performance when needed while reducing power use during lighter loads, as detailed in NVIDIA's "GPU Boost Documentation" and "AI Infrastructure for Enterprise." Deep sleep mode (A) during processing disrupts performance. Disabling energy-saving features (B) wastes power. Lowest clock speeds (C) sacrifice performance unnecessarily. GPU Boost is NVIDIA's recommended approach for efficiency.
NEW QUESTION # 54
You manage a large-scale AI infrastructure where several AI workloads are executed concurrently across multiple NVIDIA GPUs. Recently, you observe that certain GPUs are underutilized while others are overburdened, leading to suboptimal performance and extended processing times. Which of the following strategies is most effective in resolving this imbalance?
Answer: A
NEW QUESTION # 55
A healthcare company is using NVIDIA AI infrastructure to develop a deep learning model that can analyze medical images and detect anomalies. The team has noticed that the model performs well during training but fails to generalize when tested on new, unseen data. Which of the following actions is most likely to improve the model's generalization?
Answer: D
Explanation:
Applyingdata augmentation techniques(C) is the most likely action to improve the model's generalization on unseen medical imaging data. Let's dive into why:
* What is generalization?: Generalization is a model's ability to perform well on new, unseen data, avoiding overfitting to the training set. Overfitting occurs when a model memorizes training data (e.g., specific image patterns) rather than learning robust features (e.g., anomaly shapes).
* Role of data augmentation: Augmentation artificially expands the training dataset by applying transformations (e.g., rotations, flips, brightness changes) to medical images, simulating real-world variability (e.g., different lighting, angles in scans). This forces the model to learn invariant features, improving its performance on diverse test data. For example, rotating an X-ray image ensures the model recognizes anomalies regardless of orientation.
* Implementation: NVIDIA's DALI or cuAugment can GPU-accelerate augmentation,integrating seamlessly with training pipelines on NVIDIA infrastructure. Techniques like random crops or noise injection are particularly effective for medical imaging.
* Evidence: The symptom-high training accuracy, low test accuracy-indicates overfitting, a common issue in deep learning, especially with limited or uniform datasets like medical images. Augmentation is a standard remedy.
Why not the other options?
* A (Fewer epochs): Reduces training time, potentially underfitting, not addressing overfitting.
* B (Larger batch size): Improves training stability but doesn't inherently enhance generalization; it may even mask overfitting by smoothing gradients.
* D (More complex model): Increases capacity, worsening overfitting if data variety isn't addressed.
NVIDIA's healthcare AI resources endorse augmentation for robust models (C).
NEW QUESTION # 56
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