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Answer : A

Concurrently developing software, where multiple developers work on different parts of the codebase simultaneously, requires more rigid version control. This is because:

Managing Changes: Ensuring that changes made by one developer do not conflict with changes made by another.

Maintaining History: Keeping a detailed record of modifications to understand the evolution of the codebase and to revert changes if necessary.

Robust version control systems (VCS) like Git facilitate concurrent development by managing branches, merges, and conflict resolution effectively.

Software Configuration Management Patterns: Effective Teamwork, Practical Integration by Stephen P. Berczuk and Brad Appleton

Answer : B

In a concurrent development environment, when a problem is identified in an earlier version (Version 1) that originated in a later version (Version 2), the appropriate action involves managing the code versions effectively. Branching the Version 2 codeline is the most appropriate first step because:

Isolation of Changes: Branching allows for the isolation of the problematic code in Version 2, enabling targeted fixes without affecting ongoing development in other versions.

Concurrent Development: This approach supports concurrent development activities, allowing different teams to work on fixing the issue in Version 2 while continuing development on other versions.

Answer : A

The class intervals 11.5-13.5, 13.5-15.5, 15.5-17.5, and 17.5-19.5 are appropriate for representing the given data set in a histogram. These intervals cover the entire range of the data, ensuring each data point falls within a specific interval, and they are consistent in width, which is crucial for accurate histogram representation.

Answer : C

One of the direct benefits of improved software quality is a reduction in the number of defects. High-quality software undergoes thorough testing, rigorous quality assurance processes, and adherence to best practices in development, leading to fewer bugs and issues. This results in more reliable and robust software, reduces the need for costly fixes and rework, and enhances user satisfaction and trust in the product. Reference:

Pressman, Roger S. 'Software Engineering: A Practitioner's Approach.' 8th Edition, McGraw-Hill, 2014.

IEEE Std 730-2014, IEEE Standard for Software Quality Assurance Processes.

Answer : C

After test procedures have been executed and problems have been identified, the next step should be to implement appropriate changes to the code. This involves fixing the identified defects or issues based on the test results, followed by re-testing to ensure that the changes have resolved the issues without introducing new ones.

Kaner, C., Falk, J., & Nguyen, H. Q. (1999). Testing Computer Software.

IEEE Standard for Software and System Test Documentation (IEEE 829-2008).