Explain the difference between errors, faults, and failures. Give an example of an error that leads to a fault in the requirements; the design; the code. Give an example of a fault in the requirements that leads to a failure; a fault in the design that leads to a failure; a fault in the test data that leads to a failure.
1. Give an example of problem analysis where the problem components are relatively simple, but the difficulty in solving the problem lies in the interconnections among sub problem components.
2. Why can a count of faults be a misleading measure of product quality?
Which single sign-on system is used in both UNIX and Microsoft Active Directory?