Free Oracle 1Z0-1127-24 Exam Actual Questions

The questions for 1Z0-1127-24 were last updated On Apr 20, 2025

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Question No. 1

Given the following code: chain = prompt |11m

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Correct Answer: D

LangChain Expression Language (LCEL) is a declarative language used to compose chains together in LangChain. It allows users to define the flow and interaction of different components in a clear and concise manner. By using LCEL, developers can easily specify how prompts, models, and other elements should interact, making the process of creating and managing chains more straightforward and efficient. This method is preferred due to its readability and ease of use, compared to more imperative or programmatic approaches.

Reference

LangChain documentation on LCEL

Examples and tutorials on using LangChain Expression Language


Question No. 2

What does the Loss metric indicate about a model's predictions?

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Correct Answer: A

In machine learning and AI models, the loss metric quantifies the error between the model's predictions and the actual values.

Definition of Loss:

Loss represents how far off the model's predictions are from the expected output.

The objective of training an AI model is to minimize loss, improving its predictive accuracy.

Loss functions are critical in gradient descent optimization, which updates model parameters.

Types of Loss Functions:

Mean Squared Error (MSE) -- Used for regression problems.

Cross-Entropy Loss -- Used in classification problems (e.g., NLP tasks).

Hinge Loss -- Used in Support Vector Machines (SVMs).

Negative Log-Likelihood (NLL) -- Common in probabilistic models.

Clarifying Other Options:

(B) is incorrect because loss does not count the number of predictions.

(C) is incorrect because loss focuses on both right and wrong predictions.

(D) is incorrect because loss should decrease as a model improves, not increase.

Oracle Generative AI Reference:

Oracle AI platforms implement loss optimization techniques in their training pipelines for LLMs, classification models, and deep learning architectures.


Question No. 3

What is the primary purpose of LangSmith Tracing?

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Correct Answer: D

The primary purpose of LangSmith Tracing is to debug issues in language model outputs. LangSmith Tracing allows developers to trace and analyze the sequence of operations and decisions made by the model during the generation process. This helps identify and resolve problems, ensuring the model's outputs are accurate and reliable.

Reference

LangSmith documentation on tracing and debugging

Tutorials on using tracing tools for language model development


Question No. 4

Which is NOT a typical use case for LangSmith Evaluators?

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Correct Answer: B

LangSmith Evaluators are not typically used for aligning code readability. Instead, they are used for tasks such as measuring the coherence of generated text, evaluating the factual accuracy of outputs, and detecting bias or toxicity. Evaluators help ensure the quality and reliability of the outputs generated by language models.

Reference

LangSmith documentation on evaluators

Research articles on evaluation metrics for language models


Question No. 5

What does a cosine distance of 0 indicate about the relationship between two embeddings?

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Correct Answer: D

Cosine distance (or cosine similarity) is a metric used to measure the angular similarity between two vectors in high-dimensional space.

Cosine Distance Calculation:

Cosine similarity formula:

The value ranges from -1 to 1:

1 Vectors are identical.

0 Vectors are orthogonal (unrelated).

-1 Vectors are completely opposite.

Why a Cosine Distance of 0 Means Similar Direction:

A cosine similarity of 1 means vectors point in the same direction.

A cosine distance of 0 means maximum similarity (no angular difference).

Why Other Options Are Incorrect:

(A) is incorrect because a cosine distance of 0 implies similarity, not dissimilarity.

(B) is incorrect because unrelated vectors have a cosine similarity close to 0, not exactly 0.

(C) is incorrect because cosine similarity does not measure vector magnitude, only direction.

Oracle Generative AI Reference:

Oracle's vector search and embedding-based AI models rely on cosine similarity for semantic search, recommendation systems, and NLP tasks.