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Valid Dumps NCA-AIIO Sheet - NCA-AIIO Test Price
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NVIDIA-Certified Associate AI Infrastructure and Operations Sample Questions (Q123-Q128):
NEW QUESTION # 123
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: A
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 # 124
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: A
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 # 125
Which of the following statements correctly highlights a key difference between GPU and CPU architectures?
Answer: B
Explanation:
GPUs are optimized for parallel processing, with thousands of smaller cores, while CPUs have fewer, more powerful cores for sequential tasks, correctly highlighting a key architectural difference. NVIDIA GPUs (e.g., A100) excel at parallel computations (e.g., matrix operations for AI), leveraging thousands of cores, whereas CPUs focus on latency-sensitive, single-threaded tasks. This is detailed in NVIDIA's "GPU Architecture Overview" and "AI Infrastructure for Enterprise." Option (A) reverses the roles. GPUs don't have higher clock speeds (B); CPUs do. CPUs aren't for graphics (C); GPUs are. NVIDIA's documentation confirms (D) as the accurate distinction.
NEW QUESTION # 126
When deploying AI workloads on a cloud platform using NVIDIA GPUs, which of the following is the most critical consideration to ensure cost efficiency without compromising performance?
Answer: D
Explanation:
Using spot instances where applicable for non-critical workloads is the most critical consideration for cost efficiency without compromising performance. Spot instances, offered by cloud providerswith NVIDIA GPUs (e.g., DGX Cloud), provide significant cost savings for interruptible tasks like batch training, while reserved instances ensure performance for critical workloads. Option A (single instance) limits scalability.
Option C (lowest cost) risks performance trade-offs. Option D (max memory) increases costs unnecessarily.
NVIDIA's cloud deployment guides endorse spot instance strategies.
NEW QUESTION # 127
You are supporting a senior engineer in troubleshooting an AI workload that involves real-time data processing on an NVIDIA GPU cluster. The system experiences occasional slowdowns during data ingestion, affecting the overall performance of the AI model. Which approach would be most effective in diagnosing the cause of the data ingestion slowdown?
Answer: B
Explanation:
Profiling the I/O operations on the storage system is the most effective approach to diagnose the cause of data ingestion slowdowns in a real-time AI workload on an NVIDIA GPU cluster. Slowdowns during ingestion often stem from bottlenecks in data transfer between storage and GPUs (e.g., disk I/O, network latency), which can starve the GPUs of data and degradeperformance. Tools like NVIDIA DCGM or system-level profilers (e.g., iostat, nvprof) can measure I/O throughput, latency, and bandwidth, pinpointing whether storage performance is the issue. NVIDIA's "AI Infrastructure and Operations" materials stress profiling I/O as a critical step in diagnosing data pipeline issues.
Switching frameworks (B) may not address the root cause if I/O is the bottleneck. Adding GPUs (C) increases compute capacity but doesn't solve ingestion delays. Optimizing inference code (D) improves model efficiency, not data ingestion. Profiling I/O is the recommended first step per NVIDIA guidelines.
NEW QUESTION # 128
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