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  2. NVIDIA Certification
  3. NCA-AIIO Exam
  4. NVIDIA.NCA-AIIO.v2025-09-29.q49 Dumps
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Question 11

You are responsible for managing an AI infrastructure that includes multiple GPU clusters for deep learning workloads. One of your tasks is to efficiently allocate resources and manage workloads across these clusters using an orchestration platform. Which of the following approaches would best optimize the utilization of GPU resources while ensuring high availability of the AI workloads?

Correct Answer: C
Implementing a load-balancing algorithm that dynamically assigns workloads based on real-time GPU availability is the best approach to optimize resource utilization and ensure high availability in multi-cluster GPU environments. This method, supported by NVIDIA's "DeepOps" and Kubernetes with GPU Operator, monitors GPU metrics (e.g., utilization, memory) via tools like DCGM and allocates workloads to underutilized clusters, preventing bottlenecks and ensuring failover. This dynamic approach adapts to workload changes, maximizing efficiency and uptime.
Round-robin (A) and FCFS (D) ignore real-time resource states, leading to inefficiency. Static scheduling (B) lacks adaptability. NVIDIA's orchestration guidelines favor dynamic load balancing for AI clusters.
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Question 12

You are managing an AI infrastructure where multiple AI workloads are being run in parallel, including image recognition, natural language processing (NLP), and reinforcement learning. Due to limited resources, you need to prioritize these workloads. Which AI workload should you prioritize first to ensure the best overall system performance and resource allocation?

Correct Answer: C
Natural Language Processing (NLP) should be prioritized first to ensure the best overall system performance and resource allocation in this scenario. NLP workloads, such as large language models (e.g., BERT, GPT), are typically compute- and memory-intensive, benefiting significantly from NVIDIA GPUs' parallel processing capabilities (e.g., Tensor Cores). Prioritizing NLP ensures efficient resource use for a high-impact workload, as noted in NVIDIA's "AI Infrastructure and Operations Fundamentals" and "Deep Learning Institute (DLI)" materials, which highlight NLP's growing enterprise demand and GPU optimization.
Image recognition (A) and reinforcement learning (B) are also GPU-intensive but often less resource- constrained than NLP in mixed workloads. Background preprocessing (D) is less time-sensitive and can run opportunistically. NVIDIA's workload prioritization guidance favors NLP in such cases.
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Question 13

You are tasked with deploying multiple AI workloads in a data center that supports both virtualized and non- virtualized environments. To maximize resource efficiency and flexibility, which of the following strategies would be most effective for running AI workloads in a virtualized environment?

Correct Answer: A
Using containerization within a single VM to run multiple AI workloads is the most effective strategy for maximizing resource efficiency and flexibility in a virtualized environment. Containers (e.g., Docker) allow multiple workloads to share GPU resources via NVIDIA's container runtime, offering lightweight isolation and efficient resource utilization compared to separate VMs. This approach, supported by NVIDIA's
"DeepOps" and "GPU Virtualization" documentation, leverages Kubernetes or similar orchestration for scalability and flexibility while maintaining performance on virtualized GPUs (e.g., via NVIDIA GPU Operator).
Separate VMs (B) waste resources due to overhead. Sequential execution in one VM (C) sacrificesparallelism, reducing efficiency. Bare metal (D) maximizes performance but lacks virtualization flexibility. NVIDIA recommends containerization for virtualized AI efficiency.
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Question 14

Your AI team notices that the training jobs on your NVIDIA GPU cluster are taking longer than expected.
Upon investigation, you suspect underutilization of the GPUs. Which monitoring metric is the most critical to determine if the GPUs are being underutilized?

Correct Answer: A
GPU Utilization Percentage is the most direct metric to assess whether GPUs are underutilized during training. Measured as a percentage of time the GPU is actively processing tasks, it's available via NVIDIA tools like nvidia-smi and DCGM (Data Center GPU Manager). A low percentage (e.g., below 70-80% during training) indicates the GPU isn't fully engaged, often due to bottlenecks like slow data loading or inefficient parallelism, common issues in NVIDIA GPU clusters (e.g., DGX systems). This metric pinpoints the root cause of prolonged training times.
Memory Bandwidth Utilization (Option B) shows memory usage efficiency but not overall GPU activity.
Network Latency (Option C) affects multi-node setups but isn't a primary indicator of single-GPU utilization.
CPU Utilization (Option D) reflects CPU load, not GPU performance. NVIDIA's performance tuning guides prioritize GPU Utilization for diagnosing underutilization.
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Question 15

When using an InfiniBand network for an AI infrastructure, which software component is necessary for the fabric to function?

Correct Answer: C
OpenSM (Open Subnet Manager) is essential for InfiniBand networks, managing the fabric by discovering topology, configuring switches and host channel adapters (HCAs), and handling routing. Without it, the fabric cannot operate. Verbs is an API for RDMA, and MPI is a communication protocol, but OpenSM is the critical software component for functionality.
(Reference: NVIDIA Networking Documentation, Section on InfiniBand Subnet Management)
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