Which of the following describes the specifications of a core node?

The correct choice highlights that a core node is designed to be stateless with no persistent data requirements. This means that core nodes operate without retaining information from previous sessions or transactions, which allows them to scale effectively and handle traffic dynamically. When a core node is stateless, it can process requests and provide responses without being dependent on any stored data or context from previous interactions, making it highly efficient and adaptable.

In a distributed computing environment, stateless architecture helps to alleviate bottlenecks that can occur with stateful systems, especially under varying loads. This characteristic aligns with the overall goal of enhancing performance and ensuring continuity in service delivery within an Illumio-controlled environment.

In contrast, the other options suggest attributes that do not accurately reflect the core functionalities of a core node. The mention of being stateful with persistent data requirements does not align with the design goal of maximizing flexibility and minimizing dependencies. Additionally, describing a core node solely as a storage solution or merely as an entry point for external data access restricts its broader applicability and misrepresents its role in the Illumio architecture. Core nodes are integral in processing and enforcing policies rather than serving exclusively as storage or access points.