Which of the following tiers addresses risks from an information system perspective?
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A. B. C. D.information system level.
The RMF primarily operates at tier3 but it can also have interactions at tiers 1 and 2
Answer: A is incorrect.
It is an invalid Tier.
The information system level is the tier 3
It addresses risks from an information system perspective, and is guided by the risk decisions at tiers 1 and 2
Risk decisions at tiers 1 and 2 impact the ultimate selection and deployment of requisite safeguards.
This also has an impact on the countermeasures at the mission and business process level is the Tier 2, and it addresses risks from the mission and business process perspective.
The question is related to the concept of tiers in the context of secure software development. The different tiers represent different levels of abstraction for analyzing and addressing security risks in a software system.
Tier 0 refers to the hardware and physical infrastructure of the system. It includes aspects such as servers, network devices, and data centers. This tier is not directly related to software development and is focused on ensuring the physical security of the system.
Tier 1, on the other hand, refers to the system architecture and design. It involves identifying potential threats, vulnerabilities, and risks that may arise due to the design and configuration of the software system. This tier is concerned with addressing risks from a software perspective and ensuring that the system's design is secure.
Tier 2 focuses on the implementation of the software system. It involves identifying and addressing risks that may arise due to coding errors, misconfiguration, and other implementation issues. This tier is concerned with ensuring that the system is secure during the development and implementation stages.
Tier 3 is focused on the operational aspects of the system. It involves identifying and addressing risks that may arise during system operation, such as unauthorized access, data breaches, and other security incidents. This tier is concerned with ensuring that the system is secure during its operational life.
Answer (C) Tier 2, therefore, addresses risks from an information system perspective, as it is focused on the implementation of the software system and ensuring that the system is secure during the development and implementation stages.