The IAM/CA makes certification accreditation recommendations to the DAA. The DAA issues
accreditation determinations. Which of the following are the accreditation determinations issued by
the DAA? Each correct answer represents a complete solution. Choose all that apply.

A.
IATT

B.
IATO

C.
DATO

D.
ATO

E.
ATT

Explanation:
The DAA issues one of the following four accreditation determinations: Approval to
Operate (ATO): It is an authorization of a DoD information system to process, store, or transmit
information. Interim Approval to Operate (IATO): It is a temporary approval to operate based on an
assessment of the implementation status of the assigned IA Controls. Interim Approval to Test
(IATT): It is a temporary approval to conduct system testing based on an assessment of the
implementation status of the assigned IA Controls. Denial of Approval to Operate (DATO): It is a
determination that a DoD information system cannot operate because of an inadequate IA design
determination exists.
Topic 2, Volume B