PASS GUARANTEED NVIDIA NCA-AIIO MARVELOUS TEST SIMULATOR FREE

Pass Guaranteed NVIDIA NCA-AIIO Marvelous Test Simulator Free

Pass Guaranteed NVIDIA NCA-AIIO Marvelous Test Simulator Free

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NCA-AIIO Lab Questions - NCA-AIIO Mock Test

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NVIDIA-Certified Associate AI Infrastructure and Operations Sample Questions (Q155-Q160):

NEW QUESTION # 155
Your AI data center is running multiple high-performance GPU workloads, and you notice that certain servers are being underutilized while others are consistently at full capacity, leading to inefficiencies. Which of the following strategies would be most effective in balancing the workload across your AI data center?

  • A. Use horizontal scaling to add more servers
  • B. Manually reassign workloads based on current utilization
  • C. Increase cooling capacity in the data center
  • D. Implement NVIDIA GPU Operator with Kubernetes for automatic resource scheduling

Answer: D

Explanation:
The NVIDIA GPU Operator with Kubernetes (C) automates resource scheduling and workload balancing across GPU clusters. It integrates GPU awareness into Kubernetes, dynamically allocating workloads to underutilized servers based on real-time utilization, priority, and resource demands. This ensures efficient use of all GPUs, reducing inefficiencies without manual intervention.
* Horizontal scaling(A) adds more servers, increasing capacity but not addressing the imbalance- underutilized servers would remain inefficient.
* Manual reassignment(B) is impractical for large-scale, dynamic workloads and lacks scalability.
* Increasing cooling capacity(D) improves hardware reliability but doesn't balanceworkloads.
The GPU Operator's automation and integration with Kubernetes make it the most effective solution (C).


NEW QUESTION # 156
Your AI team is deploying a large-scale inference service that must process real-time data 24/7. Given the high availability requirements and the need to minimize energy consumption, which approach would best balance these objectives?

  • A. Use a single powerful GPU that operates continuously at full capacity to handle all inference tasks
  • B. Schedule inference tasks to run in batches during off-peak hours
  • C. Use a GPU cluster with a fixed number of GPUs always running at 50% capacity to save energy
  • D. Implement an auto-scaling group of GPUs that adjusts the number of active GPUs based on the workload

Answer: D

Explanation:
Implementing an auto-scaling group of GPUs (A) adjusts the number of active GPUs dynamically based on workload demand, balancing high availability and energy efficiency. This approach, supported by NVIDIA GPU Operator in Kubernetes or cloud platforms like AWS/GCP with NVIDIA GPUs, ensures 24/7 real-time processing by scaling up during peak loads and scalingdown during low demand, reducing idle power consumption. NVIDIA's power management features further optimize energy use per active GPU.
* Fixed GPU cluster at 50% capacity(B) wastes resources during low demand and may fail during peaks, compromising availability.
* Batch processing off-peak(C) sacrifices real-time capability, unfit for 24/7 requirements.
* Single GPU at full capacity(D) risks overload, lacks redundancy, and consumes maximum power continuously.
Auto-scaling aligns with NVIDIA's recommended practices for efficient, high-availability inference (A).


NEW QUESTION # 157
You are managing an AI cluster where multiple jobs with varying resource demands are scheduled. Some jobs require exclusive GPU access, while others can share GPUs. Which of the following job scheduling strategies would best optimize GPU resource utilization across the cluster?

  • A. Use FIFO (First In, First Out) Scheduling
  • B. Schedule all jobs with dedicated GPU resources
  • C. Enable GPU sharing and use NVIDIA GPU Operator with Kubernetes
  • D. Increase the default pod resource requests in Kubernetes

Answer: C

Explanation:
Enabling GPU sharing and using NVIDIA GPU Operator with Kubernetes (C) optimizes resourceutilization by allowing flexible allocation of GPUs based on job requirements. The GPU Operator supports Multi- Instance GPU (MIG) mode on NVIDIA GPUs (e.g., A100), enabling jobs to share a single GPU when exclusive access isn't needed, while dedicating full GPUs to high-demand tasks. This dynamic scheduling, integrated with Kubernetes, balances utilization across the cluster efficiently.
* Dedicated GPU resources for all jobs(A) wastes capacity for shareable tasks, reducing efficiency.
* FIFO Scheduling(B) ignores resource demands, leading to suboptimal allocation.
* Increasing pod resource requests(D) may over-allocate resources, not addressing sharing or optimization.
NVIDIA's GPU Operator is designed for such mixed workloads (C).


NEW QUESTION # 158
You are working on deploying a deep learning model that requires significant GPU resources across multiple nodes. You need to ensure that the model training is scalable, with efficient data transfer between the nodes to minimize latency. Which of the following networking technologies is most suitable for this scenario?

  • A. InfiniBand
  • B. Ethernet (1 Gbps)
  • C. Wi-Fi 6
  • D. Fiber Channel

Answer: A

Explanation:
InfiniBand (C) is the most suitable networking technology for scalable, low-latency data transfer in multi- node GPU training. It offers high throughput (up to 400 Gbps) and ultra-low latency (<1 µs), ideal for synchronizing gradients and weights across nodes using NVIDIA NCCL. InfiniBand's RDMA (Remote Direct Memory Access) further enhances efficiency by bypassing CPU overhead, critical for distributed deep learning.
* Wi-Fi 6(A) lacks the reliability and bandwidth (max ~10 Gbps) for training clusters.
* Fiber Channel(B) is for storage, not compute node interconnects.
* Ethernet (1 Gbps)(D) is too slow for large-scale AI training demands.
NVIDIA's DGX systems use InfiniBand for this purpose (C).


NEW QUESTION # 159
During routine monitoring of your AI data center, you notice that several GPU nodes are consistently reporting high memory usage but low compute usage. What is the most likely cause of this situation?

  • A. The GPU drivers are outdated and need updating
  • B. The data being processed includes large datasets that are stored in GPU memory but not efficiently utilized by the compute cores
  • C. The workloads are being run with models that are too small for the available GPUs
  • D. The power supply to the GPU nodes is insufficient

Answer: B

Explanation:
The most likely cause is thatthe data being processed includes large datasets that are stored in GPU memory but not efficiently utilized by the compute cores(D). This scenario occurs when a workload loads substantial data into GPU memory (e.g., large tensors or datasets) but the computation phase doesn't fully leverage the GPU's parallel processing capabilities, resulting in high memory usage and low compute utilization. Here's a detailed breakdown:
* How it happens: In AI workloads, especially deep learning, data is often preloaded into GPU memory (e.g., via CUDA allocations) to minimize transfer latency. If the model or algorithm doesn't scale its compute operations to match the data size-due to small batch sizes, inefficient kernel launches, or suboptimal parallelization-the GPU cores remain underutilized while memory stays occupied. For example, a small neural network processing a massive dataset might only use a fraction of the GPU's thousands of cores, leaving compute idle.
* Evidence: High memory usage indicates data residency, while low compute usage (e.g., via nvidia-smi) shows that the CUDA cores or Tensor Cores aren't being fully engaged. This mismatch is common in poorly optimized workloads.
* Fix: Optimize the workload by increasing batch size, using mixed precision to engage Tensor Cores, or redesigning the algorithm to parallelize compute tasks better, ensuring data in memory is actively processed.
Why not the other options?
* A (Insufficient power supply): This would cause system instability or shutdowns, not a specific memory-compute imbalance. Power issues typically manifest as crashes, not low utilization.
* B (Outdated drivers): Outdated drivers might cause compatibility or performance issues, but they wouldn't selectively increase memory usage while reducing compute-symptoms would be more systemic (e.g., crashes or errors).
* C (Models too small): Small models might underuse compute, but they typically require less memory, not more, contradicting the high memory usage observed.
NVIDIA's optimization guides highlight efficient data utilization as key to balancing memory and compute (D).


NEW QUESTION # 160
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