What does it mean when access to a resource is granted with discretionary control?

Discretionary access control (DAC) allows the owner of a resource to determine who has access to that resource and what level of access is granted. This model is driven by the resource owner's discretion, which means that they can configure access permissions based on their own preferences or requirements. It emphasizes individual users' rights over the resource and gives them the authority to grant or revoke access to others.

In this context, the option indicating that access can be granted only by the owner of the resource accurately reflects the principle of discretionary control, as the owner holds the primary responsibility for determining who can access the resource and how it can be used. This allows for flexibility in permissions but requires that the owner be responsible for managing those permissions.

Other options do not align with the concept of discretionary control, as they either imply a lack of owner discretion or promote broader access that does not adhere to the owner's specific permissions.