What does an Access Control List define in the context of shared resources?

An Access Control List (ACL) is a crucial component in the context of shared resources, specifically defining what actions authenticated users can perform on those resources. ACLs are used to manage and control access rights and permissions for various users or groups regarding files, directories, or other resources within a system. By specifying who can read, write, execute, or manage modifications to a resource, ACLs help ensure that only authorized individuals can perform specific tasks, thereby enhancing security and access management.

This focus on user activities distinctly separates the role of an ACL from other choices presented. While there are definitions and protocols related to internet access, data retrieval speed, and device network permissions, these do not pertain directly to the delineation of user actions within a resource management context, which is the primary function of an ACL.