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What is the purpose of a reliability block diagram (RBD)?

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to track
2026 Statistics

Key Facts: CRE Exam

165

Exam Questions

ASQ

$418/$568

Exam Fee (Member/Non)

ASQ

5 hrs

Time Limit

ASQ

Open Book

Exam Format

ASQ

The CRE is a specialized ASQ certification for engineers who ensure product and system reliability throughout the lifecycle. It covers probability and statistics for reliability, design for reliability, maintainability, and failure analysis. CRE holders are in high demand in aerospace, defense, automotive, and medical device industries where product reliability is mission-critical.

Sample CRE Practice Questions

Try these sample questions to test your CRE exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary goal of a reliability program within an organization?
A.To eliminate all product failures before shipment
B.To ensure products perform their intended function for a specified period under stated conditions
C.To reduce manufacturing costs by minimizing testing
D.To comply with ISO 9001 requirements exclusively
Explanation: A reliability program's primary goal is to ensure that products perform their intended function for a specified period under stated conditions. This encompasses the entire product lifecycle from design through field use. While eliminating failures and reducing costs may be secondary benefits, they are not the primary objective. Exam tip: Remember the classic reliability definition — probability of performing a required function under stated conditions for a stated period of time.
2Which of the following is the MOST important element of a reliability program plan?
A.A detailed budget for testing equipment
B.Clear reliability requirements with measurable goals and milestones
C.A list of all employees involved in the program
D.Historical warranty data from the previous five years
Explanation: A reliability program plan must contain clear, measurable reliability requirements with defined goals and milestones to be effective. Without measurable targets, the program cannot track progress or demonstrate achievement. While budgets, personnel, and historical data are supporting elements, the requirements form the foundation. Exam tip: ASQ CRE emphasizes that reliability requirements must be quantifiable (e.g., MTBF > 5000 hours at 90% confidence).
3A reliability engineer is asked to justify the cost of implementing a formal reliability program. Which metric would BEST demonstrate the financial impact?
A.Number of engineers on the reliability team
B.The percentage of design reviews attended
C.Total number of tests performed during development
D.Life cycle cost (LCC) reduction including warranty, maintenance, and downtime savings
Explanation: Life cycle cost (LCC) analysis is the most compelling financial metric because it captures the total cost of ownership including development, manufacturing, warranty, maintenance, and downtime costs. Reducing LCC through reliability improvements directly demonstrates ROI to management. Exam tip: LCC analysis is a key tool for reliability engineers to communicate value to stakeholders — always frame reliability in terms of cost avoidance and savings.
4During a design review, the reliability engineer discovers that a critical subsystem has no redundancy. What should be the engineer's FIRST action?
A.Document the risk and present a reliability impact assessment to the design team
B.Immediately halt the project until redundancy is added
C.Ignore the issue if the component has a high individual reliability
D.Escalate directly to the CEO
Explanation: The reliability engineer should first document the risk and present a quantified reliability impact assessment to the design team. This allows informed decision-making about whether redundancy is needed based on the reliability requirements and criticality of the subsystem. Halting a project or escalating to the CEO without analysis is premature. Exam tip: The CRE is expected to be a data-driven advisor — always quantify risk before recommending action.
5Which international standard provides guidelines for reliability program management?
A.ISO 14001
B.ISO 45001
C.IEC 60300-1
D.IEEE 802.11
Explanation: IEC 60300-1 (Dependability Management) provides guidelines for the management of reliability, availability, and maintainability programs. ISO 14001 covers environmental management, ISO 45001 covers occupational health and safety, and IEEE 802.11 is a wireless networking standard. Exam tip: The IEC 60300 series is the cornerstone standard family for dependability — know that 60300-1 covers program management and 60300-3-x covers analysis techniques.
6A reliability engineer needs to establish reliability targets for a new product. Which approach is MOST appropriate?
A.Set targets based on competitor marketing claims
B.Use the same targets as the previous product generation without adjustment
C.Derive targets from customer requirements, warranty goals, and field data from similar products
D.Allow the manufacturing team to determine reliability targets based on production capacity
Explanation: Reliability targets should be derived from multiple sources including customer requirements, warranty cost goals, safety requirements, and field performance data from similar products. This ensures targets are both achievable and aligned with market expectations. Competitor claims may be inflated, reusing old targets ignores market evolution, and manufacturing should not drive reliability targets. Exam tip: Reliability allocation starts with system-level targets derived from customer needs, then flows down to subsystems.
7What is the role of a Failure Review Board (FRB) in reliability management?
A.To systematically review failures, determine root causes, and recommend corrective actions
B.To assign blame for product failures to specific individuals
C.To approve the marketing of products with known defects
D.To negotiate warranty claims with customers
Explanation: A Failure Review Board (FRB) is a cross-functional team that systematically reviews failures, determines root causes through investigation, and recommends corrective actions to prevent recurrence. The FRB is not about assigning blame but about learning from failures to improve reliability. Exam tip: The FRB process is closely linked to FRACAS (Failure Reporting, Analysis, and Corrective Action System) — both are essential closed-loop reliability improvement tools.
8In a reliability program, what does FRACAS stand for?
A.Failure Rate Analysis and Corrective Action System
B.Functional Reliability Assessment and Control Action System
C.Failure Reporting, Analysis, and Corrective Action System
D.Field Reliability Analysis and Customer Action System
Explanation: FRACAS stands for Failure Reporting, Analysis, and Corrective Action System. It is a closed-loop process for documenting failures, analyzing root causes, implementing corrective actions, and verifying their effectiveness. FRACAS is one of the most critical reliability management tools because it creates organizational learning from failures. Exam tip: The key word is 'closed-loop' — FRACAS must track corrective actions through to verification of effectiveness.
9A company's reliability program has been collecting field failure data for three years but has not seen improvement in product reliability. What is the MOST likely root cause?
A.The failure data is not being analyzed and fed back into the design process
B.The data collection period is too short
C.The products are inherently unreliable and cannot be improved
D.Field conditions are too variable to draw conclusions
Explanation: Collecting data without analyzing it and feeding insights back into the design process creates no value. The closed-loop feedback mechanism is essential — data must flow from field failures through root cause analysis to design corrections. Three years of data is typically more than sufficient to identify reliability trends and failure modes. Exam tip: Data collection alone does not improve reliability; it is the analysis-action-verification cycle that drives improvement.
10Which of the following BEST describes the concept of 'reliability growth management'?
A.Increasing production volume to reduce per-unit failure rates
B.Extending the warranty period to demonstrate confidence in the product
C.Growing the reliability engineering team by hiring more engineers
D.A planned process of discovering and correcting design weaknesses through testing to improve reliability over time
Explanation: Reliability growth management is a planned, systematic process where design weaknesses are discovered through testing (or field experience), root causes are identified, and corrective actions are implemented to progressively improve reliability. Models like Duane and AMSAA (Crow) are used to track and project reliability growth. Exam tip: The Duane model plots cumulative MTBF vs. cumulative test time on log-log paper — a straight line indicates consistent growth.

About the CRE Exam

The CRE certification from ASQ validates expertise in reliability engineering principles, including reliability management, probability, statistical methods, and design evaluation.

Questions

165 scored questions

Time Limit

5 hours

Passing Score

Pass/Fail (scaled)

Exam Fee

$418/$568 (ASQ)

CRE Exam Content Outline

16%

Reliability Management

Reliability program planning, organization, standards, and product safety

24%

Probability & Statistics for Reliability

Statistical distributions, life data analysis, Weibull analysis, and estimation methods

24%

Design Evaluation

FMEA, FTA, reliability block diagrams, design of experiments, and design review

18%

Reliability Modeling & Predictions

System reliability models, parts count, physics of failure, and reliability growth

18%

Reliability Testing & Maintenance

Test planning, accelerated life testing, maintainability analysis, and availability

How to Pass the CRE Exam

What You Need to Know

  • Passing score: Pass/Fail (scaled)
  • Exam length: 165 questions
  • Time limit: 5 hours
  • Exam fee: $418/$568

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

CRE Study Tips from Top Performers

1Master Weibull analysis — it appears throughout the exam in life data analysis, testing, and modeling sections
2Focus on Probability & Statistics and Design Evaluation — together they account for 48% of the exam
3Know reliability block diagrams for series, parallel, k-out-of-n, and complex system configurations
4Study FMEA and FTA thoroughly including risk priority numbers and minimal cut sets
5Prepare tabbed reference materials with formulas for exponential, Weibull, normal, and lognormal distributions

Frequently Asked Questions

What is the CRE exam?

The CRE (Certified Reliability Engineer) is an ASQ certification for professionals who ensure products and systems perform their intended function over time. It covers reliability management, statistical methods, design evaluation, modeling, and testing.

How many questions are on the CRE exam?

The CRE exam has 165 multiple-choice questions to be completed in 5 hours. The exam is open-book, allowing you to bring reference materials including reliability handbooks and statistical tables.

What is the CRE passing score?

The CRE uses a scaled scoring system with a Pass/Fail result. ASQ does not disclose the exact cut score. The exam requires strong proficiency in reliability-specific statistical methods and engineering principles.

Is the CRE exam difficult?

The CRE is considered one of ASQ's more challenging exams due to its heavy emphasis on probability, statistics, and Weibull analysis. The math-intensive nature requires strong analytical skills. Being open-book helps if you organize your reference materials well.

What experience is needed for the CRE?

CRE candidates need 8 years of experience in reliability engineering areas. A degree offsets some experience: a bachelor's counts as 4 years, a master's as 5 years, and a doctorate as 6 years. At least 3 years must be in a decision-making role.