Certified Associate in Software Testing (CAST) Practice Test

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Study for the Certified Associate in Software Testing (CAST) Test. Prepare with flashcards and multiple-choice questions, each question has hints and explanations. Get ready for your exam!

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Interoperability is primarily concerned with:

Ease of modifying existing applications
Effort required to couple two different systems
Testing the functionality of software
Ability to reuse code across applications

The correct answer is: Effort required to couple two different systems

Interoperability focuses on the ability of different systems or components to work together and exchange information effectively. This concept is crucial in software development, especially when multiple systems need to communicate with each other to provide a seamless user experience or fulfill business processes. Choosing the option that highlights the effort required to couple two different systems underscores the essence of interoperability, which is about creating connections and ensuring different technologies can interact efficiently. This interaction can involve various challenges, such as data format compatibility, communication protocols, and understanding each system's operational context. Thus, the emphasis on the effort required to facilitate these collaborations captures the core of what interoperability is all about. The other options address important aspects of software development and testing but do not align as closely with the concept of interoperability. Modifying existing applications pertains more to maintainability, testing functionality relates to quality assurance, and reusing code focuses on efficiency and modularity rather than the specific ability of systems to interact with one another.