DNS(Domain Name System,域名系统)是互联网中用于将域名转换为 IP 地址的重要组成部分。DNS 查询有两种主要方式:迭代查询(Iterative Query)和递归查询(Recursive Query)。这两种查询方式各有特点,适用于不同的场景。 1. 递归查询(Recursive Query) 定义 递归查询是指客户端向 DNS 服务器发起查询请求时,要求该 DNS ...
No queries are blocked. A DNS server will answer either iterative or recursive queries. However, if you mean in the sense of blocking any type queries in general, BIND offers a "View" option that you can configure what subnets to listen on, however, not with Windows as of this writing....
递归解析(Recursive Resolution):递归解析是指DNS服务器在收到域名解析请求后,如果自身不具备解析能力,会向其他DNS服务器发起请求,直到找到能够提供解析结果的DNS服务器。这种方式可以实现全局的域名解析,但是由于需要多次查询其他DNS服务器,因此解析速度较慢。 迭代解析(Iterative Resolution):迭代解析是指DNS服务器在收到...
In Recursive DNS Query, If the DNS Server doesn't know the answer to provide accurate answer to the DNS Client, DNS Server may query other DNS Servers on behalf of the DNS Client. Iterative DNS Query:In Iterative DNS Query, when a DNS Client asks the DNS server for name resolution, the...
Recursive query - In a recursive query, a DNS client requires that a DNS server (typically a DNS recursive resolver) will respond to the client with either the requested resource record or an error message if the resolver can't find the record. Iterative query - in this situation the DNS...
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...
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,...
When a user enters a URL, their device queries a recursive DNS resolver, which will send iterative queries the authoritative DNS servers, starting at the root. The process continues until the recursive resolver finds the right answer from the authoritative DNS server that is associated with that ...
It has to do with DNS recursive vs. iterative lookups and how the client workstation handles them.First of all, for those who don't know, a recursive lookup is basically a name request that is forward on until a correct answer is returned [or a "Nobody knows who that is..." comes...
A recursive DNS query, or lookup, is where the originating DNS server (client) goes through a waterfall-like process of communicating with several other servers one after the other to find and return the right IP address. In an iterative DNS query, the client server communicates directly with...