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Protocols & Standards

12 sections2,582 questions

The specifications systems agree on rather than the products that implement them: API styles, authentication and identity protocols, web and transport standards, networking, file transfer and email, wireless and IoT, serialization formats, module specifications, compliance regimes and blockchain consensus. Interviewers ask because a protocol is the contract two independently built systems must honour, so its details decide what interoperates cleanly and what breaks silently at the boundary.

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