Problem 1
Suppose you are designing a "function" for a safety critical part of an automobile. This function can be implemented by one or more microprocessors and software. You can choose among three forms of fault tolerance: fail silent, fail-consistent, or fail-maliciously. Given that you want to deal with one failure, answer the following questions:
1. What is meant by fail-silent, fail-consistent, and fail-maliciously components?
2. How many copies of the components would be required for detection of problems in the presence of fail-silent, fail-consistent, and fail-maliciously components?
Problem 2
Write a short (1-page) essay about a failure mode and effects analysis (FMEA). Specifically address the use of this safety assessment tool in the automotive and nuclear industries.