Sure, here's a breakdown of your explanation about different DNS resource record types:

DNS Resource Record Types:

• DNS operates with defined resource record types that enable various types of DNS resolutions.
• While there are many resource record types, we'll focus on the most basic ones in this explanation.

A Record (Address Record):

• An A record points a domain name to an IPv4 address.
• Each domain can have multiple A records to enable DNS round robin, distributing traffic across IPs.
• DNS round robin involves cycling through the list of IPs (in order) to balance traffic.

the first computer get 10.1.1.1

because of cycling, the next computer will get 10.1.1.2

Quad A Record (AAAA Record):

• Similar to an A record, but returns an IPv6 address instead of IPv4.
• Used to handle IPv6 addressing.

CNAME Record (Canonical Name):

• Redirects traffic from one domain to another.
• Useful for ensuring redirection with only one source of truth.
• Often used to redirect a domain to its www version.
• In CNAME, microsoft.com will redirected into www.microsoft.com
• Microsoft can only change IP for www.microsoft.com (if they want)

MX Record (Mail Exchange):

• Used for (only) email delivery to correct mail servers.