Having read docs on iterative queries, for ex., the [technet.microsoft.com article "Recursive and Iterative Queries"](http://technet.microsoft.com/en-us/library/cc961401.aspx "the technet.microsoft.com article "Recursive and Iterative Queries""), I cannot understand numerous posts and docs ...
Note: A typical uncached DNS lookup will involve both recursive and iterative queries. It's important to differentiate between arecursive DNSquery 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 resolver...
DNS queries fall into one of two classes: recursive queries and iterative queries.A recursive query is a DNS query sent to a DNS server in which the querying host asks the DNS server to provide a complete answer to the query, even if that means contacting other servers to provide the answ...
Recursive DNS queries generally tend to resolve faster than iterative queries. This is due to caching. A recursive DNS server caches the final answer to every query it performs and saves that final answer for a certain amount of time (known as theTime-To-Live). ...
Performance comparison of iterative and recursive DNS queries[J]. IEEE Communications Magazine, VIP免费下载 下载文档 收藏 分享 赏 0下载提示 1、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。 2、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
Note that recursive queries are usually faster than iterative queries. Because the recursive DNS server caches the result of every query it performs and saves the result for a TTL time. When a recursive resolver receives a query for an IP address already in its cache, it can quickly serve th...
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?
MonitoringYou can perform simple diagnostic functions to ensure the correct configuration and operation of the DNS server, such as performing recursive and iterative queries and electing to run them as needed or at a specified interval. SecurityYou can specify access control lists (ACLs) for DNS se...
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,...
9. The local domain name server saves the returned result to the cache for next use, and returns the result to the client at the same time. Precautions: Recursive query: In this mode, the DNS server receives a client request and must reply to the client with an accurate query result. ...