Final answer:
An Access Control List is a list that controls and manages access to resources in a computer system, listing who has access and what access they have.
Step-by-step explanation:
An Access Control List is a list that is associated with a file, directory or object that lists who has access to it and what access they have. It is used to control and manage access to resources in a computer system.
The Access Control List includes a list of users or groups and their corresponding permissions, such as read, write, or execute. It ensures that only authorized users have access to specific files or directories and prevents unauthorized access.
For example, if a file has an Access Control List that grants read access to User A and write access to User B, only User A can read the file and only User B can write to it. This helps protect sensitive information and maintain data integrity.