Question

Software does not wear-out in the traditional sense of the term, but software does tend to deteriorate as it evolves, because:
1. Software suffers from exposure to hostile environments.
2. Defects are more likely to arise after software has been used often.
3. Multiple change requests introduce errors in component interactions.
4. Software spare parts become harder to order.

Answer 1

Correct Answer - Option 3 : Multiple change requests introduce errors in component interactions.

The correct answer is "option 3".

• "Wear out" means when something is no longer of any use then it reaches into a wear out state.
• In other words, it cannot effectively perform what it is built for.
• Hardware can wear out due to some environmental issues like dust, excessive temperature, etc.
• But software cannot wear out because according to user demands, software needs to be updated & demands may increase one after another.
• Hence, any alternative software can replace previous software due to having the implementation of the user's recent demands.
• So, not having a recent feature is not a defect but if considered as a failure then no. of failures increases with time & software gets deteriorated.
• But still, the software can perform its operation what it was performing in the beginning so that's why software cannot wear out.

Hence, Software can deteriorate due to multiple change requests that may introduce errors in component interactions.