What is the RFC for DNS?
RFC 1034 – RFC 1035
The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities.
What RFC 1035?
This RFC is the revised specification of the protocol and format used in the implementation of the Domain Name System. This memo documents the details of the domain name client – server communication.
What are the types of DNS queries?
There are three types of queries in the DNS system:
- Recursive Query.
- Iterative Query.
- Non-Recursive Query.
- DNS Resolver.
- DNS Root Server.
- Authoritative DNS Server.
What are the 2 types of DNS query resolution types?
Types of queries In general, there are two ways of resolving a host or a domain name to an IP address, using the domain name system – a Recursive query and a non-Recursive query.
What is Amazon Route 53 DNS queries?
Route 53 creates one CloudWatch Logs log stream for each Route 53 edge location that responds to DNS queries for the specified hosted zone and sends query logs to the applicable log stream. The format for the name of each log stream is hosted-zone-id / edge-location-ID , for example, Z1D633PJN98FT9/DFW3 .
Can hostnames have hyphens?
Valid characters for hostnames are ASCII(7) letters from a to z, the digits from 0 to 9, and the hyphen (-). A hostname may not start with a hyphen. Hostnames are often used with network client and server programs, which must generally translate the name to an address for use.
What are the RFC 2181 clarifications to the DNS specification?
RFC 2181 Clarifications to the DNS Specification July 1997 client should treat the RRs for all purposes as if all TTLs in the RRSet had been set to the value of the lowest TTL in the RRSet. In no case may a server send an RRSet with TTLs not all equal. 5.3.
What is RFC 8499 DNS?
RFC 8499 DNS Terminology January 2019 Format of names: Names in the global DNS are domain names. There are three formats: wire format, presentation format, and common display. The basic wire format for names in the global DNS is a list of labels ordered by decreasing distance from the root, with the root label last.
What is a recursive query in DNS?
RFC 8499 DNS Terminology January 2019 Recursive query: A query with the Recursion Desired (RD) bit set to 1 in the header. (See Section 4.1.1 of [RFC1035] .) If recursive service is available and is requested by the RD bit in the query, the server uses its resolver to answer the query. (See Section 4.3.2 of [RFC1034] .)
Why does rfc2065 require that SIG queries be directed to authoritative servers?
RFC2065 actually requires that SIG queries be directed only to authoritative servers to avoid the problems that could be caused here, and while servers exist that do not understand the special properties of SIG records, this will remain necessary.