To answer this question, we need to understand what functional testing is and where it can be performed.

Functional testing is a type of testing that focuses on testing the functionality of a software application. It involves testing the individual functions or features of the application to ensure that they work correctly and meet the specified requirements.

Functional testing can be performed at different levels of testing, including:

A. At system and acceptance testing levels only - This option is incorrect. Functional testing is not limited to just the system and acceptance testing levels. It can be performed at other levels as well.

B. At all test levels - This option is correct. Functional testing can be performed at all test levels, including unit testing, integration testing, system testing, and acceptance testing. This allows for comprehensive testing of the software application's functionality throughout the development lifecycle.

C. At all levels above integration testing - This option is incorrect. Functional testing can be performed at the integration testing level and all levels above it, including system testing and acceptance testing.

D. At the acceptance testing level only - This option is incorrect. Functional testing is not limited to just the acceptance testing level. It can be performed at other levels as well.

The correct answer is B. Functional testing can be performed at all test levels to ensure that the functionality of the software application is thoroughly tested.

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• Wrong explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) i, iii, and iv are more for developers - This option is incorrect because it includes performance testing tools (i) and test comparators (iii), which are not specifically geared towards developers. These tools can be used by both developers and testers to assess the performance of the software and compare test results.

Option B) ii and iv are more for developers - This option is correct. Coverage measurement tools (ii) and dynamic analysis tools (iv) are commonly used by developers to assess code coverage and analyze the behavior of the software during runtime. These tools help developers ensure that their code is well-tested and identify any potential issues or vulnerabilities.

Option C) ii, iii, and iv are more for developers - This option is incorrect because it includes test comparators (iii), which are not specifically geared towards developers. Test comparators are used to compare test results and can be used by both developers and testers.

Option D) ii and iii are more for developers - This option is incorrect because it includes test comparators (iii), which are not specifically geared towards developers. Test comparators can be used by both developers and testers to compare test results.

The correct answer is B) ii and iv are more for developers. This option is correct because coverage measurement tools (ii) and dynamic analysis tools (iv) are commonly used by developers to assess code coverage and analyze the behavior of the software during runtime.

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• Wrong explanation