Briefly describe the difference between recursive and iterative DNS query?

Briefly describe the difference between recursive and iterative DNS query?

Expert Solution

Answer:

DNS queries are often classified according the way during which an entire request is processed. Generally queries are often classified as follows.

1-recursive query
2-iterative query

3-Inverse queries

Recursive Query

A recursive query may be a quite query, during which the DNS server, who received your query will do all the work of fetching the solution , and giving it back to you. During this process, the DNS server may additionally query other DNS server's within the internet on your behalf, for the solution .

Iterative Query:

In Iterative DNS Query, when a DNS Client asks the DNS server for name resolution, the DNS Server provides the simplest answer it's . If the DNS Server doesn't know the solution to the DNS Query from Client, the solution are often a regard to another lower level DNS Server also. This lower level DNS Server is delegated at the upper level DNS Server to be Authoritative for the DNS namespace which the DNS Query is said with.

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