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SSCP · Question #1327

The Trusted Computer Security Evaluation Criteria book (TCSEC) defines two types of assurance. What are they? (Choose two)

The correct answer is A. Life cycle assurance E. Operational assurance. The Trusted Computer Security Evaluation Criteria (TCSEC) identifies two core types of assurance: life cycle assurance and operational assurance, which cover a system's development and runtime security respectively.

Submitted by eva_at· Apr 18, 2026Security Concepts and Practices

Question

The Trusted Computer Security Evaluation Criteria book (TCSEC) defines two types of assurance. What are they? (Choose two)

Options

  • ALife cycle assurance
  • BQuality assurance
  • CSystem architecture assurance
  • DOS hardening methods and assurance
  • EOperational assurance

How the community answered

(37 responses)
  • A
    92% (34)
  • B
    5% (2)
  • D
    3% (1)

Why each option

The Trusted Computer Security Evaluation Criteria (TCSEC) identifies two core types of assurance: life cycle assurance and operational assurance, which cover a system's development and runtime security respectively.

ALife cycle assuranceCorrect

Life cycle assurance focuses on the security measures and processes implemented throughout the entire development, maintenance, and retirement phases of a system.

BQuality assurance

Quality assurance is a broader management concept and not one of the two specific assurance types defined by TCSEC.

CSystem architecture assurance

System architecture assurance is not a formally recognized assurance category within the TCSEC framework.

DOS hardening methods and assurance

OS hardening methods and assurance describes a specific security practice, rather than an overarching assurance type in TCSEC.

EOperational assuranceCorrect

Operational assurance pertains to the security mechanisms and features that are active and effective during a system's normal functioning and ongoing operations.

Concept tested: TCSEC assurance types

Topics

#TCSEC#Assurance Types#Security Models#Trusted Systems

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