When defining a service level agreement (SLA) regarding the level of data confidentiality that is handled by a third-party service provider, the BEST indicator of compliance would be the:

A.
access control matrix.

B.
encryption strength.

C.
authentication mechanism.

D.
data repository.

Explanation:
The access control matrix is the best indicator of the level of compliance with the service level agreement ( SLA ) data confidentiality clauses. Encryption strength, authentication mechanism and data repository might be defined in the SLA but are not confidentiality compliance indicators.