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Top 30 Cobertura Interview Questions with Answers multiple choice style

1. What is Cobertura?

a. A code coverage tool
b. A web framework
c. A testing framework
d. A build automation tool
Answer: a

2. Which programming languages are supported by Cobertura?

a. Java
b. Python
c. C++
d. Ruby
Answer: a

3. What is the primary purpose of Cobertura in software development?

a. Code optimization
b. Code profiling
c. Code testing
d. Code documentation
Answer: b

4. Cobertura uses which type of code coverage metric?

a. Statement coverage
b. Branch coverage
c. Function coverage
d. Line coverage
Answer: a

5. Which file format is used to store Cobertura coverage data?

a. .xml
b. .csv
c. .json
d. .html
Answer: a

6. What is the main benefit of using Cobertura in a project?

a. Improved code execution speed
b. Enhanced code readability
c. Better code quality
d. Improved test coverage measurement
Answer: d

7. Which build automation tools are commonly integrated with Cobertura?

a. Maven and Gradle
b. Ant and Make
c. Jenkins and Travis CI
d. Subversion and Git
Answer: a

8. How does Cobertura track code coverage?

a. It instruments the code to collect coverage data.
b. It uses static code analysis.
c. It relies on developer annotations.
d. It analyzes runtime behavior.
Answer: a

9. What is a "coverage report" in the context of Cobertura?

a. A summary of code issues
b. A list of code violations
c. A document describing code algorithms
d. A detailed analysis of code coverage
Answer: d

10. What are the two types of code coverage supported by Cobertura?

a. Line and statement coverage
b. Function and method coverage
c. Branch and statement coverage
d. Class and package coverage
Answer: c. Branch and statement coverage

11. What does "branch coverage" measure in Cobertura?

a. The percentage of executed statements
b. The percentage of executed branches or decision points
c. The number of test cases
d. The number of code functions
Answer: b

12. How can you exclude specific classes or packages from Cobertura analysis?

a. Use the element in the Cobertura configuration file.
b. Use the @ExcludeFromCoverage annotation.
c. Modify the code to skip those classes.
d. Use regular expressions in test cases.
Answer: a

13. What is a "cobertura.ser" file?

a. A coverage report
b. A serialized data file containing coverage information
c. A test case file
d. A source code file
Answer: b

14. How can you generate HTML reports from Cobertura coverage data?

a. Use the cobertura-report command.
b. Run a specific Maven goal.
c. Use the coverage.html.generate property.
d. Cobertura doesn't support HTML reports.
Answer: a

15. Which metric does "line coverage" measure in Cobertura?

a. The percentage of code comments
b. The number of lines of code
c. The percentage of executed lines of code
d. The number of code functions
Answer: c

16. What is the purpose of Cobertura's "ignore" tag in the configuration file?

a. To ignore code formatting issues
b. To exclude specific lines of code from coverage analysis
c. To disable Cobertura for a specific package
d. To suppress code errors
Answer: b

17. What does the "cobertura.line.complexity" property control in Cobertura?

a. Line coverage thresholds
b. Code complexity measurement
c. Branch coverage settings
d. Report formatting options
Answer: b

18. What is the minimum Cobertura coverage threshold to consider a project well-tested?

a. 50%
b. 75%
c. 90%
d. 100%
Answer: c

19. What is the role of the element in Cobertura's configuration file?

a. To specify the output file formats for coverage reports
b. To configure code formatting settings
c. To define test case formats
d. To specify code exclusion formats
Answer: a

20. In a Maven project, which phase generates Cobertura coverage reports?

a. compile
b. test
c. site
d. package
Answer: c

21. How does Cobertura help in identifying untested code?

a. By generating code review reports
b. By highlighting uncovered lines in the source code
c. By analyzing code complexity
d. By profiling code execution
Answer: b

22.What is the purpose of the "cobertura-instrumentation" task in a build file?

a. To run the code coverage analysis
b. To instrument the code for coverage tracking
c. To generate coverage reports
d. To exclude specific code from analysis
Answer: b

23. What is the purpose of the "maxmem" attribute in Cobertura's Ant task?

a. To specify the maximum number of test cases to run
b. To limit the maximum memory allocated to Cobertura
c. To set the maximum code coverage threshold
d. To define the maximum execution time for code analysis
Answer: b

24. Which tool can be used to visualize Cobertura coverage reports in Jenkins?

a. Cobertura Jenkins Plugin
b. Jenkins Dashboard
c. Cobertura Analyze Tool
d. Cobertura Report Generator
Answer: a

25. What is the purpose of "cobertura.instrumentation.accumulate" property?

a. To control the instrumentation process
b. To accumulate coverage data across multiple runs
c. To specify the output directory for coverage reports
d. To enable/disable HTML report generation
Answer: b

26. How do you specify custom source directories in a Cobertura configuration file?

a. Use the element
b. Use the element
c. Use the element
d. Use the element
Answer: d

27. What does the Cobertura "line rate" represent in a coverage report?

a. The percentage of executed lines of code
b. The number of executed lines
c. The percentage of executed test cases
d. The number of code functions
Answer: a

28. What does the "cobertura-integration" plugin in Gradle do?

a. Generates Cobertura coverage reports
b. Integrates Cobertura with other tools
c. Measures integration testing coverage
d. Profiles code execution
Answer: a

29. In Cobertura, how can you measure branch coverage?

a. By analyzing method complexity
b. By counting the number of executed branches
c. By analyzing code comments
d. By calculating code cyclomatic complexity
Answer: b

30. What is the primary advantage of using Cobertura in a Continuous Integration (CI) environment?

a. Improved code quality
b. Faster code execution
c. Automated code testing and reporting
d. Real-time code profiling
Answer: c

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