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| Section | Objectives |
|---|---|
| Introduction to AI Agents | - AI agent fundamentals and architecture
|
| OpenAI Responses API and Agents SDK | - OpenAI agent development
|
| Introduction to MCP | - Model Context Protocol fundamentals
|
| LangChain for AI Agents | - LangChain fundamentals
|
| OCI Enterprise AI Agents | - OCI Enterprise AI platform
|
| Agentic AI for Oracle AI Database | - Oracle AI Database agentic AI capabilities
|
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質問 # 53
Which SQL function computes distance between vectors in Oracle AI Vector Search?
正解：B
解説：
Oracle AI Vector Search uses the SQL function VECTOR_DISTANCE() as its principal mechanism for computing mathematical distance between two vector representations. The function accepts two vector expressions and can optionally accept a distance metric. Oracle describes VECTOR_DISTANCE as the main vector-distance function and supports metrics appropriate to similarity-search workloads, with cosine behavior available according to the query and vector-index configuration.
Vector distance is fundamental to semantic retrieval because an embedding model represents meaning as numerical coordinates in multidimensional space. A query embedding can therefore be compared with stored embeddings, and results can be ranked according to their calculated distance. Oracle's documentation demonstrates this pattern using ORDER BY VECTOR_DISTANCE(...) to identify vectors semantically closest to the query vector.
Oracle also provides shorthand functions such as L1_DISTANCE , L2_DISTANCE , COSINE_DISTANCE , and INNER_PRODUCT , but none of the alternative names supplied in this question- VECTOR_SCORE , SCORE_SIMILARITY , or EMBEDDING_DISTANCE -is the principal Oracle SQL function being tested.
Therefore, C is unequivocally correct and matches the uploaded source answer.
Study Guide reference/topic: Agentic AI for Oracle AI Database - Oracle AI Vector Search, VECTOR_DISTANCE, distance metrics, and similarity search.
質問 # 54
Which description defines memory poisoning in AI-agent systems?
正解：A
解説：
Memory poisoning is an agent-security attack in which malicious, misleading, or attacker-controlled information is introduced into memory that the agent may reuse in future reasoning or actions. The uploaded course source defines it as malicious content inserted into persistent memory stores and identifies C as correct.
Oracle's current AI Agent Memory security guidance explains why persistent memory must be treated as a security-sensitive surface. Model-derived memories, summaries, context cards, metadata, and retrieved records can become persistent state and later be inserted into prompts. Oracle therefore advises treating memory-derived content as untrusted and emphasizes that write-capable memory paths can influence future prompts and retrieval results.
The broader agent-security definition is also explicit in OWASP's Agentic AI guidance: memory poisoning involves malicious data being persisted in agent memory so that it can influence future sessions or behaviors.
This differs from temporary context-window pressure, SQL injection, or physical RAM corruption. The essential security property is persistence : compromised memory can affect later reasoning long after the original malicious interaction.
Therefore, C is correct.
Study Guide reference/topic: Introduction to AI Agents - agent memory, persistent state, memory poisoning, prompt injection persistence, and agent security.
質問 # 55
What is the purpose of OCI Enterprise AI Governance?
正解：A
解説：
OCI Enterprise AI Governance provides the control framework required to operate generative and agentic AI workloads securely in enterprise environments. Oracle defines governance as a combination of infrastructure protection, access control, network security, and runtime safety mechanisms. Key capabilities include OCI IAM policies , which determine who can access and manage Generative AI resources; Private Endpoints , which prevent model traffic from requiring public network exposure; Zero Trust Packet Routing , which introduces identity-aware network enforcement; and Guardrails , which apply safety and compliance controls to model inputs and outputs.
Oracle Guardrails specifically support mechanisms including content moderation, prompt-injection detection, and personally identifiable information detection. These controls address AI-specific operational and security risks rather than model lifecycle rollback or performance optimization.
Therefore, option D accurately expresses the purpose of Enterprise AI Governance. Model version management, runtime implementation, and latency monitoring may be operational concerns in an AI platform, but they are not the principal governance function described by OCI. The uploaded examination source also identifies D as the correct answer.
Study Guide reference/topic: OCI Enterprise AI Agents - Enterprise AI Governance, IAM, Private Endpoints, Zero Trust Packet Routing, and Guardrails.
質問 # 56
Why is chunking necessary before generating embeddings for large documents?
正解：D
解説：
Embedding models accept inputs only up to their supported input-size or token limits. Large documents can exceed those limits and therefore must be divided into smaller segments before embedding generation. The course source explicitly identifies overcoming token limits as the reason for chunking.
Oracle AI Vector Search includes native chunking functionality that can split text according to characters, words, or model vocabulary tokens. Oracle's Vector Search guidance specifically states that input length must remain within the token limits of the embedding model and provides configurable maximum chunk sizes.
Chunking also provides an important retrieval benefit. Instead of representing an entire long document with one coarse embedding, the system creates embeddings for semantically meaningful sections. A similarity query can then retrieve only the chunks most relevant to the user's question, reducing irrelevant context and improving retrieval-augmented generation precision.
Chunking does not intentionally remove semantic meaning; well-designed chunking attempts to preserve it. It does not automatically provide encryption, and SQL storage format is not its underlying purpose.
Therefore, A is correct.
Study Guide reference/topic: Agentic AI for Oracle AI Database - document chunking, embedding token limits, vector generation, semantic retrieval, and RAG.
質問 # 57
How do On-Demand serving and Dedicated AI Clusters differ for OCI Enterprise AI Models?
正解：A
解説：
OCI Generative AI provides both On-Demand and Dedicated serving modes. The fundamental architectural distinction is resource isolation. On-Demand model inference uses Oracle-managed shared infrastructure, making it suitable for straightforward consumption of supported pretrained models without reserving dedicated hardware. Dedicated mode assigns dedicated GPU resources to the customer's workload and provides predictable, isolated serving capacity.
Oracle states that Dedicated AI Clusters are compute resources dedicated to a customer's models and are not shared with other tenancies. They are used for hosting supported pretrained models and, critically, for fine- tuning and hosting custom or imported models. The course question correspondingly identifies B as correct.
Option A ignores the infrastructure-isolation difference. Option C is technically impossible because all model inference requires compute resources; On-Demand simply abstracts shared infrastructure. Option D is also incorrect because On-Demand is not limited to embedding models-OCI provides multiple supported model categories through managed inference.
Therefore, B accurately captures both shared-versus-dedicated serving and the importance of Dedicated AI Clusters for custom-model workloads.
Study Guide reference/topic: OCI Enterprise AI Agents - Enterprise AI Models, On-Demand serving, Dedicated AI Clusters, custom models, and GPU isolation.
質問 # 58
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