Question

What is the challenge in achieving 100% functional equivalence in reverse engineering?

a.

The person carrying out the process may encounter errors in the original system

b.

The programming language may be incompletely defined

c.

Data equivalence may be difficult to achieve

d.

All of the above

Posted under Software Maintenance Software Engineering

Answer: (d).All of the above Explanation:The challenge in achieving 100% functional equivalence in reverse engineering can be due to a variety of reasons. As per the text, the person carrying out the process (the reengineer) may encounter errors in the original system and may want to correct those. Such errors may be deeply hidden in the original system and become much more troublesome in the reverse engineered system. Additionally, the programming language may be incompletely defined and its implementation may depend on certain machine characteristics. Furthermore, data equivalence may be difficult to achieve due to typing issues, approximations, data conversions, etc. All of these factors contribute to the challenge of achieving 100% functional equivalence in reverse engineering.

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