Google Cloud Digital Leader Practice Exam

What term describes a set of instructions that lets different software programs communicate with each other?

1. Application programming interface

2. Programming communication link

3. Network programming interface

4. Communication link interface

The correct answer is: Application programming interface

The term that accurately describes a set of instructions enabling different software programs to communicate with each other is an application programming interface (API). APIs define the methods and data formats that applications can use to request and exchange information, essentially serving as intermediaries that allow disparate software systems to interact. APIs play a crucial role in software development by standardizing how certain functionalities are accessed, which facilitates integration between different systems. For example, when a mobile application needs to access data from a web service, it uses the API provided by that service. This allows developers to create applications without needing to understand the intricacies of the other system’s codebase. In contrast, the other terms do not accurately represent the standard definition in software development. Options like "programming communication link" and "communication link interface" do not have established meanings in the context of how software components interact. "Network programming interface" might suggest a focus on network-level communications but lacks the specificity and common usage associated with APIs. Thus, application programming interface is the correct term within the context of facilitating software communication.