Grokking System Design Fundamentals
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DNS Resolution Process
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The DNS resolution process involves a series of recursive and iterative queries, utilizing a distributed and hierarchical infrastructure of DNS servers, resolvers, and caching mechanisms.

1. Recursive and Iterative DNS queries

DNS resolution is the process of converting a domain name into its corresponding IP address. There are two types of DNS queries involved in this process: recursive and iterative queries.

  • Recursive query: In a recursive query, the DNS resolver asks for the complete answer to a query from the DNS server

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