DNS Record

Why
DNS Records are important because they allow us to actually operate the DNS protocol

What
DNS Records are the actual format that DNS messages are sent in. The four components are: When the Type is A (Address): When the Type is NS (Name Server) When the Type is CNAME (Canonical Name) When the Type is MX (eMail eXchanger)
 * Name
 * Value
 * Type
 * TTL
 * Name is host name
 * Value is IP address
 * Name is domain
 * Value is name of dns server for domain
 * Name is host name
 * value is canonical name
 * name is domain in email address
 * value is canonical names of mail servers

How
We can insert DNS records into the system through these following steps:
 * 1) Register your domain name at a registrar
 * 2) Provide registrar with names and IP addresses of your authoratative name server
 * 3) Registrar inserts RR pairs into the TLD server
 * 4) (foobar.com, dns1.foobar.com, NS)
 * 5) (dns1.foobar.com, 212.44.9.129, A)
 * 6) Store appropriate RRs in your domain name server at dns1.foobar.com. For example, we need a type A record for www.foobar.com