What are resource records in a DNS server?

DNS Resource Records are used to answer DNS client queries. Resource Records are added to the DNS server for the portion of the DNS namespace which the DNS Server is hosting. There are different types of Resource Records.

What is a AAAA record (IPv6)?

An A record (Address record) allows you to associate a domain name or subdomain with an IP address (32-bit). This is how the record should be configured in your Namecheap account: Advanced DNS > > Host Records section: AAAA record (IPv6) An AAAA record is similar to an A record, but it allows you to point your domain to a 128-bit Ipv6 address.

What are the different types of resource records?

There are different types of Resource Records. Most important types of Resource Records are 1) IPv4 host address (A), 2) IPv6 host address (AAAA, pronounced “quad-A”) 3) CNAME (Alias), 4) Pointer (PTR), 5) Mail Exchanger (MX) 6 ) Service (SRV) Alias Record, used for mapping an alias of a DNS domain name.

What is the TTL value of a DNS resource record?

Each DNS resource record can have a TTL value configured. The default TTL of the SOA record is only used if a particular resource record does not have an explicit value configured. This value is supplied by authoritative nameservers (primary and secondary nameservers for a particular zone) when they respond to DNS queries.

How CNAME record works in DNS?

Once a DNS client queries for the A resource record for ftp.abc.com, the DNS server finds the CNAME resource record. Then it resolves the query for the A resource record for ftp1.abc.com, and returns both the A and CNAME resource records to the client. This is how CNAME record works.

What is an RR in DNS?

Resource Records (RR) A DNS resource record (RR) contains all the information about a domain name system. It defines all the attributes for a domain name such as an IP address or a mail route. A DNS RR has six fields:

How do you perform a DNS name resolution?

In order to perform a name resolution, the DNS records, specifically the resource records, must be searched for in the DNS and/or name servers. Here, each IP address (known to the server) is assigned a domain name. The DNS has a hierarchical and decentralized structure.