Question 1

What is a DNS Record?

Accepted Answer

A DNS record is a database entry in the Domain Name System that maps a domain name to specific data such as IP addresses (A/AAAA), mail servers (MX), or text verification values (TXT).

Question 2

What is the difference between A and AAAA records?

Accepted Answer

An A record maps a domain name to an IPv4 address (32-bit). An AAAA record maps the domain name to an IPv6 address (128-bit), the newer internet protocol with a vastly larger address space.

Question 3

What is DNS propagation?

Accepted Answer

DNS propagation is the delay period (typically 24 to 48 hours) after a DNS change is made for the new records to be updated across all global DNS resolvers and caching servers.

Question 4

How do MX records affect email delivery?

Accepted Answer

MX (Mail Exchange) records specify which mail servers are designated to accept incoming email messages for your domain. If misconfigured or missing, incoming emails will be bounced or rejected.

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