在DNS正向解析中,递归和迭代是两种不同的解析方式。 递归解析(Recursive Resolution):递归解析是指客户端向本地DNS服务器发送解析请求后,本地DNS服务器会负责向其他DNS服务器递归地发起解析请求,直到找到最终的解析结果并返回给客户端。递归解析的过程中,本地DNS服务器会承担大部分的解析工作,而客户端只需等待最终结果...
Recursive Query:Recursive query is a type of query in which the DNS server will do all the job of answering the users. In recursive query DNS server querying to the other DNS server on behalf of the user. When the user requesting by asking name to the server, the server performs complete...
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Note: A typical uncached DNS lookup will involve both recursive and iterative queries. It's important to differentiate between a recursive DNS query and a recursive DNS resolver. The query refers to the request made to a DNS resolver requiring the resolution of the query. A DNS recursive resolv...
DNS Basic Name Resolution Techniques: Iterative and Recursive Resolution(Page 1 of 4) Conventional name resolution transforms a DNS name into an IP address. At the highest level, this process can be considered to have two phases. In the first phase, we locate a DNS name server that has ...
Iterative DNS queriestake place between the recursive resolver, which is a local DNS server, and the nonlocal name servers, like the root, TLD and authoritative name servers. Iterative queries do not demand a name resolution; the name servers may instead respond with a referral. The root serve...
With an uncached DNS query — more on caching next! — there will probably be both recursive and iterative queries. However, you may see servers default to recursive queries more often due to the increased resolution speed. What Is DNS Caching?
Iterative queries—which connect recursive resolvers (a local DNS server) and nonlocal DNS servers (like the root, TLD or domain name servers)—don’t require domain resolution. Instead, the servers might respond with a referral, where the root server refers the recursive resolver to the TLD,...
Recursive and Iterative Queries Recursive Name ResolutionFeedback Was this page helpful? Yes No Provide product feedback Additional resources Training Module Secure Windows Server DNS - Training Secure Windows Server DNS Certification Microsoft Certified: Information Security Administrator Associate...
Iterative DNS Name Resolution Root Server unnamed root ❖ Nonlocal Lookup .com 3 .edu Server edu 2 5 4 Server com ▪ At each step, server returns name of next server down CMU Server 8 CMU CS cs Server cmu 6 7 9 Local Server 10 ▪ Local server directly someplace queries each 1 ...