Exam Sample NCA-GENL Questions | Valid Dumps NCA-GENL Ebook
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NVIDIA Generative AI LLMs Sample Questions (Q74-Q79):
NEW QUESTION # 74
What is the primary purpose of applying various image transformation techniques (e.g., flipping, rotation, zooming) to a dataset?
Answer: A
Explanation:
Image transformation techniques such as flipping, rotation, and zooming are forms of data augmentation used to artificially increase the size and diversity of a dataset. NVIDIA's Deep Learning AI documentation, particularly for computer vision tasks using frameworks like DALI (Data Loading Library), explains that data augmentation improves a model's ability to generalize by exposing it to varied versions of the training data, thus reducing overfitting. For example, flipping an image horizontally creates a new training sample that helps the model learn invariance to certain transformations. Option A is incorrect because transformations do not simplify the model architecture. Option C is wrong, as augmentation introduces variability, not uniformity. Option D is also incorrect, as augmentation typically increases computational requirements due to additional data processing.
References:
NVIDIA DALI Documentation: https://docs.nvidia.com/deeplearning/dali/user-guide/docs/index.html
NEW QUESTION # 75
When implementing data parallel training, which of the following considerations needs to be taken into account?
Answer: C
Explanation:
In data parallel training, where a model is replicated across multiple devices with each processing a portion of the data, synchronizing model weights is critical. As covered in NVIDIA's Generative AI and LLMs course, the ring all-reduce algorithm is an efficient method for syncing weights across processes or devices. It minimizes communication overhead by organizing devices in a ring topology, allowing gradients to be aggregated and shared efficiently. Option A is incorrect, as weights are typically synced after each batch, not just at epoch ends, to ensure consistency. Option B is wrong, as master-worker methods can create bottlenecks and are less scalable than all-reduce. Option D is inaccurate, as keeping weights independent defeats the purpose of data parallelism, which requires synchronized updates. The course notes: "In data parallel training, the ring all-reduce algorithm efficiently synchronizes model weights across devices, reducing communication overhead and ensuring consistent updates." References: NVIDIA Building Transformer-Based Natural Language Processing Applications course; NVIDIA Introduction to Transformer-Based Natural Language Processing.
NEW QUESTION # 76
In the context of fine-tuning LLMs, which of the following metrics is most commonly used to assess the performance of a fine-tuned model?
Answer: D
Explanation:
When fine-tuning large language models (LLMs), the primary goal is to improve the model's performance on a specific task. The most common metric for assessing this performance is accuracy on a validation set, as it directly measures how well the model generalizes to unseen data. NVIDIA's NeMo framework documentation for fine-tuning LLMs emphasizes the use of validation metrics such as accuracy, F1 score, or task-specific metrics (e.g., BLEU for translation) to evaluate model performance during and after fine-tuning.
These metrics provide a quantitative measure of the model's effectiveness on the target task. Options A, C, and D (model size, training duration, and number of layers) are not performance metrics; they are either architectural characteristics or training parameters that do not directly reflect the model's effectiveness.
References:
NVIDIA NeMo Documentation: https://docs.nvidia.com/deeplearning/nemo/user-guide/docs/en/stable/nlp
/model_finetuning.html
NEW QUESTION # 77
How does A/B testing contribute to the optimization of deep learning models' performance and effectiveness in real-world applications? (Pick the 2 correct responses)
Answer: A,E
Explanation:
A/B testing is a controlled experimentation technique used to compare two versions of a system to determine which performs better. In the context of deep learning, NVIDIA's documentation on model optimization and deployment (e.g., Triton Inference Server) highlights its use in evaluating model performance:
* Option A: A/B testing validates changes (e.g., model updates or new features) by statistically comparing outcomes (e.g., accuracy or user engagement), enabling data-driven optimization decisions.
References:
NVIDIA Triton Inference Server Documentation: https://docs.nvidia.com/deeplearning/triton-inference-server/user-guide/docs/index.html
NEW QUESTION # 78
Which of the following principles are widely recognized for building trustworthy AI? (Choose two.)
Answer: B,E
Explanation:
In building Trustworthy AI, privacy and nondiscrimination are widely recognized principles, as emphasized in NVIDIA's Generative AI and LLMs course. Privacy ensures that AI systems protect user data and maintain confidentiality, often through techniques like confidential computing or data anonymization.
Nondiscrimination ensures that AI models avoid biases and treat all groups fairly, mitigating issues like discriminatory outputs. Option A, conversational, is incorrect, as it is a feature of some AI systems, not a Trustworthy AI principle. Option B, low latency, is a performance goal, not a trust principle. Option D, scalability, is a technical consideration, not directly related to trustworthiness. The course states: "Trustworthy AI principles include privacy, ensuring data protection, and nondiscrimination, ensuring fair and unbiased model behavior, critical for ethical AI development." References: NVIDIA Building Transformer-Based Natural Language Processing Applications course; NVIDIA Introduction to Transformer-Based Natural Language Processing.
NEW QUESTION # 79
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