What is the main focus of a capability table?

The main focus of a capability table is to outline access privileges for specific objects, making option B the correct understanding here. A capability table is a data structure used in access control mechanisms to define which subjects (such as users, groups, or processes) have permissions to perform certain operations on objects (such as files or resources). Each entry in the capability table specifies the capabilities of a subject with respect to an object, and it effectively controls who can do what with particular resources in a system.

While knowing information about subjects is important, it is primarily the access privileges that the capability table monitors and enforces, which is why option B more accurately captures the essence of a capability table's purpose. Integrating this understanding into identity and access management practices is crucial for maintaining security and ensuring that users are granted the appropriate levels of access based on their roles and requirements.