Implement and maintain the security controls for the client agency's information systems and data is correct.

Under FISMA and the NIST risk management framework the agency remains ultimately accountable for information security and compliance. A contractor who operates or supports an agency system is therefore responsible to implement and maintain the security controls for the client agency's information systems and data as specified in the system security plan and contractual security requirements.

Perform security assessments and testing of the agency's information systems and data is incorrect because assessment and authorization of agency systems are organizational responsibilities under FISMA. Contractors can perform or support testing under contract but the agency or its designated assessors accept risk and complete the authorization process.

Google Cloud Security Command Center is incorrect because that is a specific vendor product and not a description of contractor responsibilities under FISMA. The question asks about roles and duties rather than tools or services.

Develop and operate the agency's FISMA compliance program is incorrect because establishing and running an agency level FISMA program is the agency's responsibility. Contractors support the program and implement controls for systems they manage but they do not own the agency wide compliance program.

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