1. Do software engineers expect large software systems to be homogeneous or heterogeneous in error content? Explain your answer. 2. What is the difference between black-box testing and glass-box...

1.
Do software engineers expect large software systems to be homogeneous or heterogeneous in error content? Explain your answer.

2.
What is the difference between black-box testing and glass-box testing?

3.
Give some analogies of black-box and glassbox testing that occur in fields other than software engineering.

4.
How does open-source development differ from beta testing? (Consider glass-box testing versus black-box testing.)

5.
Suppose that 100 errors were intentionally placed in a large software system before the

system was subjected to final testing. Moreover, suppose that 200 errors were discovered and corrected during this final testing, of which 50 errors were from the group intentionally placed in the system. If the remaining 50 known errors are then corrected, how many unknown errors would you estimate are still in the system? Explain why.