ISC2 Governance, Risk and Compliance (CGRC) Practice Question
During the Select step of the RMF, you must establish a security control baseline for an information system that FIPS 199 has categorized as MODERATE impact. Which statement best describes how the NIST SP 800-53 moderate-impact baseline is constructed?
It is selected solely at the Authorizing Official's discretion and does not depend on FIPS 199 impact categorization or FIPS 200 requirements.
It retains every control in the low-impact baseline and adds the controls and enhancements specifically identified for moderate (M) impact systems.
It consists exclusively of controls that NIST labels moderate (M), intentionally omitting low (L) controls to avoid redundancy.
It replaces the low-impact control set with entirely new, stronger controls, and excludes any controls that appear only in the low baseline.
NIST SP 800-53 organizes security controls into three impact-level baselines. The moderate baseline is derived by starting with every control that appears in the low-impact baseline and then adding the additional controls and control enhancements that the catalog designates for moderate systems. Nothing is removed from the lower baseline, and controls intended only for high-impact systems are not automatically included. Therefore, the option describing the moderate baseline as the low set plus all controls and enhancements marked "M" is correct. The other options are incorrect because the baseline does not replace low controls with different ones, does not omit the low controls, and is not selected solely by managerial discretion-its starting point is dictated by the FIPS 199 impact level and FIPS 200 minimum security requirements.
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What is the purpose of FIPS 199 in the RMF process?
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How does NIST SP 800-53 define control baselines?
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Why doesn't the Moderate baseline omit Low-impact controls?
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ISC2 Governance, Risk and Compliance (CGRC)
Selection and Approval of Framework, Security, and Privacy Controls
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