IEC 61508 - Quiz
  • 1. Which standard is an adaptation of IEC 61508 for automotive electric/electronic systems?
A) ISO 26262
B) IEC 62279
C) IEC 62061
D) IEC 61511
  • 2. What does MISRA stand for in the context of automotive software reliability?
A) Motor Industry Software Reliability Association
B) Motorized Integrated System Reliability Association
C) Mobile Instrumentation Software Reliability Association
D) Manufacturing Industry Safety Reliability Association
  • 3. When was the first set of guidelines for the development of vehicle-based software published by MISRA?
A) December 1998
B) January 1990
C) November 2000
D) November 1994
  • 4. What is the primary association of MISRA today?
A) Railway signaling protocols
B) Nuclear power plant instrumentation
C) Guidelines on using C and C++ languages
D) Manufacturing process automation
  • 5. Which standard provides a specific interpretation of IEC 61508 for railway applications?
A) IEC 62061
B) IEC 62279
C) IEC 61513
D) IEC 61511
  • 6. What are the equivalent CENELEC standards for IEC 62279?
A) EN 50262 and EN 50279
B) EN 50128 and EN 50657
C) EN 61508 and EN 61511
D) EN 62061 and EN 61513
  • 7. Which standard sets out practices in the engineering of systems for the safety of industrial processes through instrumentation?
A) IEC 62279
B) ISO 26262
C) IEC 61511
D) IEC 62061
  • 8. Which standard is specifically used for the instrumentation and control of nuclear power plant safety systems?
A) ISO 26262
B) IEC 61511
C) IEC 62061
D) IEC 61513
  • 9. What is the machinery-specific implementation of IEC 61508?
A) IEC 61511
B) IEC 62061
C) IEC 62279
D) IEC 61513
  • 10. Who publishes the overview list of safety norms specific for nuclear power plants?
A) CENELEC
B) IEC
C) ISO
D) MISRA
  • 11. What is MISRA C considered to be in the majority of safety-related industries?
A) A voluntary recommendation for hardware design
B) An outdated set of guidelines
C) The de facto standard for embedded C programming
D) The primary language for railway signaling
  • 12. Which of the following is listed as a sector under 'Process industries'?
A) Petrochemical
B) Railway signaling
C) Machinery assembly
D) Automotive manufacturing
  • 13. IEC 62061 applies to the design of which type of systems?
A) Nuclear reactor cooling systems
B) Automotive engine control units
C) Railway track switching systems
D) Machinery safety-related electrical control systems
  • 14. What does SIL stand for in the context of IEC 61508?
A) System integrity level
B) System improvement level
C) Safety integrity level
D) Safety implementation level
  • 15. How many measures are used to evaluate the achieved SIL of a design?
A) Three
B) Five
C) Two
D) Four
  • 16. What is the primary definition of Systematic Capability (SC)?
A) A measure of software speed
B) A measure of hardware cost
C) A measure of physical durability
D) A measure of design quality
  • 17. What limits the SIL of a safety function regarding its devices?
A) The total sum of all device SC ratings
B) The smallest SC rating of the devices used
C) The average SC rating of all devices
D) The highest SC rating of the devices used
  • 18. How is high demand defined in IEC 61508?
A) Twice per decade
B) Once per year
C) More than once per year
D) Less than once per year
  • 19. How is low demand defined in IEC 61508?
A) More than once per year
B) Less than or equal to once per year
C) More than twice per year
D) Exactly ten times per year
  • 20. What does SIL specify for functions that operate in high demand mode?
A) Allowable probability of demand failure
B) Allowable response latency
C) Allowable number of user interactions
D) Allowable frequency of dangerous failure
  • 21. What is the role of a Certification Body (CB)?
A) To attest that a product meets certification requirements
B) To manufacture safety-certified products
C) To act as the national government regulator
D) To write the original IEC 61508 standard
  • 22. What ensures global recognition of accredited Certification Bodies?
A) International Patent Law
B) The IEC central office stamp
C) Direct government mandates
D) Multilateral Recognition Arrangement (MLA)
  • 23. What is the document containing specific certification requirements called?
A) Compliance manual
B) Safety charter
C) Auditor guide
D) Certification scheme
  • 24. Which of the following is an example of an organization that offers IEC 61508 certification?
A) ILAC
B) TÜV Rheinland
C) ISO
D) IAF
  • 25. How many parts does the IEC 61508 standard have?
A) 7
B) 3
C) 16
D) 10
  • 26. Which parts of IEC 61508 are considered informative guidelines?
A) Part 4
B) Parts 5–7
C) Parts 1–3
D) Parts 14–16
  • 27. What is the total number of phases in the safety life cycle?
A) 16
B) 3
C) 5
D) 7
  • 28. How are the safety life cycle phases grouped in terms of operation?
A) Phases 1–16
B) Phases 14–16
C) Phases 1–5
D) Phases 6–13
  • 29. What is the stance of IEC 61508 regarding 'zero risk'?
A) Zero risk is the primary objective of the standard
B) Zero risk is only required for high-hazard industries
C) Zero risk is achievable through perfect design
D) Zero risk can never be reached
  • 30. What does the ALARP principle in IEC 61508 imply?
A) Risks are only evaluated at the design phase
B) Risk reduction is optional for small systems
C) All risks must be eliminated regardless of cost
D) Non-tolerable risks must be reduced
  • 31. In the context of the risk matrix, what does Class I signify?
A) Tolerable if cost of reduction exceeds improvement
B) Unacceptable in any circumstance
C) Undesirable but potentially tolerable
D) Acceptable as it stands
  • 32. What is the primary focus of Part 3 of IEC 61508?
A) Programmable electronics
B) Operational maintenance procedures
C) General definitions
D) Mechanical devices
  • 33. When was the second edition of IEC 61508 published?
A) 1998
B) 2010
C) 2000
D) 2005
  • 34. Which phases of the safety life cycle address realisation?
A) Phases 1–5
B) Phases 6–13
C) Phases 1–7
D) Phases 14–16
  • 35. Which part of IEC 61508 contains standard definitions?
A) Part 1
B) Part 4
C) Part 7
D) Part 3
  • 36. What coverage criterion is used in higher SIL level applications instead of simple branch coverage?
A) Object coverage
B) Statement coverage
C) Line coverage
D) MC/DC
  • 37. What tool is needed to obtain MC/DC coverage information?
A) A network analyzer
B) A word processor
C) A Unit Testing tool
D) A compiler only
  • 38. Which industry is DO-178C associated with according to the text?
A) Mining
B) Aerospace
C) Automotive
D) Household appliances
  • 39. Who authored the book 'SIL and Functional Safety in a Nutshell'?
A) W. Goble
B) M.J.M. Houtermans
C) D. Smith
D) C. O'Brien
  • 40. What is the page count of the book 'Functional Safety for the Mining Industry'?
A) 430 pages
B) 150 pages
C) 458 pages
D) 40 pages
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