Why are static testing and dynamic testing described as complementary?

  1. Because they share the aim of identifying defects and find the same types of defect.

  2. Because they have different aims but find the same types of defect.

  3. Because they have different aims and differ in the types of defect they find.

  4. Because they share the aim of identifying defects but differ in the types of defect they find.


Correct Option: D

AI Explanation

To answer this question, you need to understand the difference between static testing and dynamic testing and how they complement each other in the software testing process.

Static testing refers to the testing technique where the code or software is analyzed without actually executing it. It involves reviewing the code, requirements, designs, and other software artifacts to identify defects and improve the quality of the software. Static testing techniques include techniques like code reviews, inspections, walkthroughs, and static analysis.

Dynamic testing, on the other hand, refers to the testing technique where the code or software is executed and analyzed during runtime. It involves testing the functionality and behavior of the software by providing input and verifying the output. Dynamic testing techniques include techniques like unit testing, integration testing, system testing, and acceptance testing.

Now, let's go through each option to understand why it is correct or incorrect:

Option A) Because they share the aim of identifying defects and find the same types of defect. This option is incorrect because static testing and dynamic testing have different aims and may find different types of defects. Static testing focuses on identifying defects by analyzing the software artifacts, while dynamic testing focuses on identifying defects by executing the software.

Option B) Because they have different aims but find the same types of defect. This option is incorrect because static testing and dynamic testing not only have different aims but may also find different types of defects. Static testing primarily focuses on identifying defects in the software artifacts, while dynamic testing focuses on identifying defects during runtime.

Option C) Because they have different aims and differ in the types of defect they find. This option is incorrect because static testing and dynamic testing have different aims, but they may find similar types of defects. Static testing focuses on identifying defects by analyzing software artifacts, while dynamic testing focuses on identifying defects by executing the software.

Option D) Because they share the aim of identifying defects but differ in the types of defect they find. This option is correct because static testing and dynamic testing complement each other by sharing the aim of identifying defects but differing in the types of defects they find. Static testing helps in identifying defects in the early stages of the software development life cycle, while dynamic testing helps in identifying defects during runtime.

Therefore, the correct answer is D) Because they share the aim of identifying defects but differ in the types of defect they find.

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