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What is the first step a local DNS server performs when it receives a lookup query.

What is the first step a local DNS server performs when it receives a lookup query.

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Answer #1
  • Answer:-
  • what is DNS server?
  • The Domain Name System (DNS) is the phonebook of the Internet. When users type domain names such as ‘google.com’ or ‘nytimes.com’ into web browsers, DNS is responsible for finding the correct IP address for those sites. Browsers then use those addresses to communicate with origin servers or CDN edge servers to access website information. This all happens thanks to DNS servers: machines dedicated to answering DNS queries.

  • . In the first Lookup the local DNS server performs an interactive query and is directed down the domain tree to resolve the name.

  • In the second query the Local server knows the answer and so returns the result from cache.

  • This is DNS lookup query.

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