Oracle Updated 1z0-1157-26 Exam Questions and Answers by cruz

MCP uses JSON-RPC 2.0 as the underlying message protocol for communication between MCP clients and MCP servers. JSON-RPC provides a structured representation for requests, responses, errors, and one-way notifications while remaining independent of the underlying transport. This separation is important because the same protocol semantics can operate over STDIO or Streamable HTTP.

The MCP architecture documentation states that the data layer implements a JSON-RPC 2.0-based exchange protocol defining message structures and semantics. It also explains that the transport layer abstracts communication details, allowing the same JSON-RPC message format to operate across supported transports. The MCP specification similarly requires messages between clients and servers to follow JSON-RPC structures, including methods, parameters, IDs for requests, and result/error structures for responses.

SOAP/XML is a different web-service protocol family; GraphQL is primarily a query language and API runtime; Protocol Buffers is a binary serialization technology. None is the MCP-defined wire-message format. Therefore, option B is correct and agrees with the uploaded answer key.

Study Guide reference/topic: Model Context Protocol (MCP) Fundamentals — JSON-RPC 2.0, requests, responses, notifications, and transport independence.

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OCI Responses API requests are associated with an OCI Generative AI Project through the project's OCID — Oracle Cloud Identifier . Oracle requires an OCI Generative AI project for agent-related OpenAI-compatible API calls and uses the project identifier to determine the project context under which responses, conversations, files, containers, retention settings, and related resources operate.

Oracle's OCI Responses API documentation shows the OpenAI client configured with a project parameter containing a Generative AI Project OCID. Oracle explicitly states that this value identifies the OCI Generative AI project for the request. Oracle's project documentation further explains that projects organize agent-specific artifacts, provide isolation boundaries, and that the project OCID must be referenced in API and SDK calls to apply project settings during runtime.

An Object Storage bucket could contain data used by another workflow but does not identify the Generative AI project. The tenancy display name identifies a tenancy conceptually but not the target project. A VCN OCID refers to network infrastructure.

Therefore, D is correct and matches the uploaded answer key.

Study Guide reference/topic: OCI Enterprise AI Agents — Generative AI Projects, Project OCID, OCI Responses API configuration, and project isolation.

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