A B-rated system of the orange book has mandatory protection of the trusted computing base (TCB). Trusted computing base (TCB) refers to hardware, software, controls, and processes that cause a computer system or network to be devoid of malicious software or hardware. Maintaining the trusted computing base (TCB) is essential for security policy to be implemented successfully.

Explanation/Reference:
Explanation: Of all the choices only this answer is accurate. The PMBOK clearly states that the data must be accurate and unbiased to be credible. Answer: D is incorrect. This is not a valid statement about the qualitative risk analysis data. Answer: A is incorrect. This is not a valid statement about the qualitative risk analysis data. Answer: B is incorrect. This is not a valid statement about the qualitative risk analysis data.

A life cycle model helps to provide an insight into the development process and emphasizes on the relationships among the different activities in this process. This model describes a structured approach to the development and adjustment process involved in producing and maintaining systems. The life cycle model addresses specifications, design, requirements, verification and validation, and maintenance activities.

According to U.S. Department of Defense (DoD) Instruction 8500.2, there are eight Information Assurance (IA) areas, and the controls are referred to as IA controls. Following are the various U.S. Department of Defense information security standards: DC Security Design & Configuration IA Identification and Authentication EC Enclave and Computing Environment EB Enclave Boundary Defense PE Physical and Environmental PR Personnel CO Continuity VI Vulnerability and Incident Management Answer B is incorrect. Business continuity management is an International information security standard.

Explanation/Reference:
Explanation: Non repudiation refers to mechanisms that prevent a party from falsely denying involvement in some data transaction.