JSON is commonly covered in technical interviews as it relates to common web development practices for modern applications. JSON objects are an easy way to share data between two applications or between models. It is also considered a fairly lightweight way to pass data. Lastly, the increased usage of JavaScript-based applications has made JSON a more popular file type for passing and parsing data.
WHY IS JSON COVERED IN TECHNICAL INTERVIEWS
JSON is covered in technical interviews because it is fairly standard practice for sending data between backend and front-end applications and frameworks. For example, if you are a backend engineer and wanting to work with a front-end engineer, you will need to create the logic that serves up the front-end JSON objects. This is known as an API-driven development framework and in recent years (2013 — now) has become far more popular than what used to be standardized (sending all available data to the front-end controller in order to be parsed by that controller). If you are going to be working with teams, knowing JSON is going to be essential. Whether you are on the front-end or backend team, this is something you will need to know.
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