Question 1

What is a DNS A record?

Accepted Answer

An A record maps a domain name to an IPv4 address, telling browsers and other clients where to find the server hosting that domain.

Question 2

What is a DNS MX record?

Accepted Answer

An MX (Mail Exchanger) record specifies the mail servers responsible for accepting email for a domain, along with a priority value.

Question 3

What is a DNS TXT record?

Accepted Answer

A TXT record stores arbitrary text data for a domain. Common uses include SPF email authentication, DKIM keys, DMARC policies, and domain ownership verification.

Question 4

What is a CNAME record?

Accepted Answer

A CNAME (Canonical Name) record creates an alias from one domain name to another. It is commonly used to point subdomains like www to the root domain.

Question 5

What is a DNS NS record?

Accepted Answer

NS (Name Server) records identify the authoritative DNS servers for a domain. These servers hold the DNS zone file and answer queries for the domain.

Question 6

What is a SOA record?

Accepted Answer

A SOA (Start of Authority) record contains administrative information about a DNS zone, including the primary nameserver, the email of the domain administrator, and zone serial number.

DNS Record Types Explained

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