What type of access control is based on permissions granted to the user, often referred to as "need to know" access?

Discretionary Access Control (DAC) is the correct response because this access control model allows users to have permissions that can be modified at their discretion. In DAC, resource owners can grant or restrict access to their resources based on individual users or groups, reflecting the "need to know" principle. This model empowers users to share their resources with others, resulting in a flexible but potentially less secure environment since the resource owner determines who has access.

In contrast, Mandatory Access Control (MAC) involves a more rigid enforced policy where access permissions are determined by a central authority rather than individual users. In MAC, users cannot change access levels, which is not consistent with the flexibility of DAC.

Strategic Access Control (SAC) is not a standardized term used in access control models, making it less relevant in this context as a recognized methodology. Similarly, Limited Access Control (LAC) is not a commonly recognized access control framework and lacks the established definitions associated with more traditional access control strategies.

Understanding DAC is crucial for those involved in information security, as it illustrates how access is managed and highlights the importance of controlling and specifying access rights within an organization based on user needs.