MAC Levels for High Integrity and Medium Availability

D.

The various MAC levels are as follows: MAC I: It states that the systems have high availability and high integrity.

MAC II: It states that the systems have high integrity and medium availability.

MAC III: It states that the systems have basic integrity and availability.

DoD 8500.2 is a document that provides guidance on the implementation of Information Assurance (IA) controls for the Department of Defense (DoD) information systems. The IA controls are established based on the Mission Assurance Categories (MAC) and confidentiality levels of the information systems.

The MAC levels are used to categorize the information systems based on their importance to the mission of the DoD. The MAC levels range from I to IV, with MAC I being the most critical and MAC IV being the least critical. The MAC levels take into consideration the impact on the mission if the confidentiality, integrity, or availability of the information system is compromised.

The IA controls for each MAC level are established based on the requirements for confidentiality, integrity, and availability. Confidentiality refers to the protection of information from unauthorized disclosure, integrity refers to the protection of information from unauthorized modification, and availability refers to the availability of information when needed.

Based on the information provided in the question, the MAC level that requires high integrity and medium availability is:

B. MAC IV

MAC IV is the lowest level of criticality and typically requires a medium level of availability, meaning that the information system should be available when needed, but not necessarily at all times. However, MAC IV requires high integrity, meaning that the information must be protected from unauthorized modification.

Therefore, the correct answer to the question is B. MAC IV.