NVIDIA NCA-GENL Practice Exam Questions

NVIDIA NCA-GENL Sample Question Answers

Question # 1

[Experimentation]You have access to training data but no access to test data. What evaluation method can you use to assess the performance of your AI model?

A. Cross-validation 
B. Randomized controlled trial 
C. Average entropy approximation 
D. Greedy decoding 

Show Answer

Question # 2

[Data Preprocessing and Feature Engineering]What is a Tokenizer in Large Language Models (LLM)?

A. A method to remove stop words and punctuation marks from text data. 
B. A machine learning algorithm that predicts the next word/token in a sequence of text. 
C. A tool used to split text into smaller units called tokens for analysis and processing. 
D. A technique used to convert text data into numerical representations called tokens for machine learning. 

Show Answer

Question # 3

[Fundamentals of Machine Learning and Neural Networks]What is the main difference between forward diffusion and reverse diffusion in diffusion models ofGenerative AI?

A. Forward diffusion focuses on generating a sample from a given noise vector, while reversediffusion reverses the process by estimating the latent space representation of a given sample.
B. Forward diffusion uses feed-forward networks, while reverse diffusion uses recurrent networks. 
C. Forward diffusion uses bottom-up processing, while reverse diffusion uses top-down processing togenerate samples from noise vectors
D. Forward diffusion focuses on progressively injecting noise into data, while reverse diffusionfocuses on generating new samples from the given noise vectors.

Show Answer

Question # 4

[Software Development]Which of the following is a key characteristic of Rapid Application Development (RAD)?

A. Iterative prototyping with active user involvement. 
B. Extensive upfront planning before any development. 
C. Linear progression through predefined project phases. 
D. Minimal user feedback during the development process. 

Show Answer

Question # 5

[Experimentation]You have developed a deep learning model for a recommendation system. You want to evaluate theperformance of the model using A/B testing. What is the rationale for using A/B testing with deeplearning model performance?

A. A/B testing allows for a controlled comparison between two versions of the model, helping toidentify the version that performs better.
B. A/B testing methodologies integrate rationale and technical commentary from the designers ofthe deep learning model.
C. A/B testing ensures that the deep learning model is robust and can handle different variations ofinput data.
D. A/B testing helps in collecting comparative latency data to evaluate the performance of the deeplearning model.

Show Answer

Question # 6

[Experimentation]Which metric is commonly used to evaluate machine-translation models?

A. F1 Score 
B. BLEU score 
C. ROUGE score 
D. Perplexity 

Show Answer

Question # 7

[LLM Integration and Deployment]In the context of machine learning model deployment, how can Docker be utilized to enhance theprocess?

A. To automatically generate features for machine learning models. 
B. To provide a consistent environment for model training and inference. 
C. To reduce the computational resources needed for training models. 
D. To directly increase the accuracy of machine learning models. 

Show Answer

Question # 8

[Prompt Engineering]Which of the following prompt engineering techniques is most effective for improving an LLM'sperformance on multi-step reasoning tasks?

A. Retrieval-augmented generation without context 
B. Few-shot prompting with unrelated examples. 
C. Zero-shot prompting with detailed task descriptions. 
D. Chain-of-thought prompting with explicit intermediate steps. 

Show Answer

Question # 9

[LLM Integration and Deployment]Which model deployment framework is used to deploy an NLP project, especially for highperformanceinference in production environments?

A. NVIDIA DeepStream 
B. HuggingFace 
C. NeMo 
D. NVIDIA Triton 

Show Answer

Question # 10

[Prompt Engineering]What is the purpose of few-shot learning in prompt engineering?

A. To give a model some examples 
B. To train a model from scratch 
C. To optimize hyperparameters 
D. To fine-tune a model on a massive dataset 

Show Answer