Types of DNS Records for Email Support
Question
Which of the following types of DNS records enables support for email?
Answers
Explanations
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A. B. C. D.B.
The correct answer is B. MX.
Domain Name System (DNS) is a protocol used to translate domain names into IP addresses. DNS records are used to store information about domain names and their corresponding IP addresses.
MX (Mail Exchanger) is a type of DNS record that specifies the mail server responsible for accepting email messages on behalf of a domain name. When someone sends an email message to a specific domain, the sender's email server looks up the MX record for that domain to determine the mail server to send the message to.
For example, if someone sends an email to user@example.com, their email server will look up the MX record for example.com to determine the mail server responsible for accepting email messages for that domain. Once the mail server is identified, the email server will send the message to that server.
A (Address) records are used to map a domain name to an IPv4 address. PTR (Pointer) records are used to map an IP address to a domain name. AAAA records are used to map a domain name to an IPv6 address. None of these records are directly related to email support.
In summary, MX records are essential for email support as they specify the mail server responsible for accepting email messages on behalf of a domain name.
