Apple Certified Support Professional (ACSP) Practice Exam 2025 - Free ACSP Practice Questions and Study Guide

"Metadata" refers to data that describes the content of other data, making it essential in library management for organizing, finding, and managing information. It includes details such as the title, author, publication date, and format of a work, which helps users locate and identify resources more effectively. By providing context and structure, metadata enhances the usability of library catalogs and databases, allowing for more intuitive searching and retrieval of information.

The other choices do not capture the essence of what metadata represents. While the physical storage location of files pertains to where data is kept, it does not describe the data itself. Backup strategies focus on preserving data integrity and availability, which is unrelated to describing the content. Lastly, security settings for user access are about controlling who can access certain data, not about providing descriptive information about the data itself.