Access Control is best described as the process of granting or denying specific requests to:

• A. Obtain and use information and related information processing services and enter specific physical facilities.
• B. Configure hardware settings on devices.
• C. Install software updates across networks.
• D. Access the Internet from secure locations.

Answer: (A)

Access control is about restricting who can obtain or use information and the systems that process it, as well as who can enter protected spaces. It works by evaluating each request to access resources or facilities and deciding whether to allow or deny it. This hinges on indicating who someone is (authentication), what they’re allowed to do (authorization), and logging what happens (auditing). The description here matches that idea by focusing on granting or denying requests to obtain information and use processing services and to enter specific physical facilities. In practice, you might see someone logging into a file share with assigned permissions or a facility badge granting entry to a restricted area, both governed by access control.

Why the other options don’t fit: configuring hardware settings is about changing device behavior, not controlling access to information or spaces; installing software updates is about maintenance and software deployment, not about access decisions; and accessing the Internet from secure locations concerns where you connect rather than who may access particular information or enter restricted areas.