Data Analytics

APIs and Webhooks

REST APIs, endpoints, authentication, pagination, webhooks, data extraction, rate limiting

20 interview questionsยท
Mid-Level
1

What does the acronym API stand for in the context of web development?

Answer

API stands for Application Programming Interface. An API defines a set of rules and protocols that allow two applications to communicate with each other. In the context of data analytics, APIs enable programmatic and automated data extraction from third-party services (CRM, marketing tools, databases).

2

What is a REST API?

Answer

REST (Representational State Transfer) is an architectural style for web APIs built on the HTTP protocol. A REST API uses URLs to identify resources and HTTP methods (GET, POST, PUT, DELETE) to perform operations on those resources. REST is the dominant standard for modern APIs because it is simple, stateless, and easily integrable with any programming language.

3

Which HTTP method should be used to retrieve data from an API?

Answer

The GET method is used to retrieve (read) data from a server via an API. It is the most common method in data analytics since the primary goal is to extract data. GET is idempotent, meaning calling it multiple times produces the same result without modifying server-side data. Query parameters are passed in the URL as query strings.

4

What data format is most commonly used by modern REST APIs?

5

What is an endpoint in the context of an API?

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