API Integration and Networking Questions

Making and managing network requests to external services and third party APIs, including HTTP fundamentals and REST principles. Topics include constructing requests, headers and authentication schemes such as token handling and refresh flows, parsing and serializing JSON, handling HTTP status codes, network error handling, timeout and retry strategies, backoff, offline and caching strategies, security concerns such as HTTPS and certificate pinning, and familiarity with common networking libraries on different platforms. Candidates should demonstrate the ability to integrate external APIs reliably and securely and to reason about networking trade offs.