Which of the following is NOT a characteristic of a Configuration Item (CI)?

The correct answer highlights that "Limited scalability" is not a defining characteristic of a Configuration Item (CI). In systems engineering, a Configuration Item is typically defined by its functionality, unique specifications, and the fact that it can be replaced as a complete entity when necessary.

A Configuration Item must have a defined functionality, meaning it serves a specific purpose within the overall system architecture. This functionality is critical for managing and understanding how the CI interacts with the rest of the system and fulfills its role.

Additionally, each CI has a unique specification that delineates its design, attributes, and performance requirements, allowing for precise identification and management throughout the system's lifecycle.

The characteristic of being replaceable as an entity indicates that a CI can be substituted or updated without necessitating a complete overhaul of the system. This facilitates maintenance and upgrades, ensuring system adaptability over time.

In contrast, "Limited scalability" does not align with the fundamental attributes of a CI. Scalability refers to the capability of a system to grow or expand in response to increasing demands. While some CIs may have design constraints, the typical attributes of a CI do not inherently include limitations on scalability. CIs can often be designed to accommodate growth, modifications, or enhancements as system requirements evolve.