Access Control techniques do NOT include which of the following?

In the context of access control, locks, gates, guards are examples of which of the following?

What is the main concern with single sign-on?

What physical characteristic does a retinal scan biometric device measure?

Which access control model provides upper and lower bounds of access capabilities for a subject?

Which of the following questions is LESS likely to help in assessing identification and authentication controls?

Which access control model is BEST suited in an environment where a high security level is required and
where it is desired that only the administrator grants access control?

What can be defined as a table of subjects and objects indicating what actions individual subjects can take
upon individual objects?

What is the difference between Access Control Lists (ACLs) and Capability Tables?

What can be defined as a list of subjects along with their access rights that are authorized to access a specific
object?