Final answer:
A Security Assessment Report (SAR) documents the findings of compliance with assigned security controls by a Security Control Assessor (SCA) based on actual assessment results.
Step-by-step explanation:
To document the Security Control Assessor's (SCA) findings of compliance with assigned security controls based on actual assessment results, what is typically used is a Security Assessment Report (SAR). The SAR provides an in-depth record of the security control assessment, detailing the effectiveness of the controls and documenting any weaknesses or deficiencies found during the assessment process. To develop the SAR, the SCA generally analyzes the evidence gathered during the assessment and evaluates the security controls against predefined criteria to determine whether they are implemented correctly, operating as intended, and producing the desired outcome with respect to meeting the security requirements for the system or information.