What are resource records in a DNS server configuration file?
Different types of DNS records that provide information for resolving names, validating certificates, and more
Resource records include A records, CNAME records, MX records, and others.
What does the Start Of Authority (SOA) record provide in a DNS configuration?
Overview of DNS zone details, serial number, retries, expirations, and information storage duration
The SOA record is typically found at the top of the DNS configuration file.
What is the purpose of an A record in DNS?
Defines the IP address of a host for IPv4
A records are used to map domain names to their corresponding IPv4 addresses.
What is the difference between an A record and an AAAA record?
A record: IPv4 address
AAAA record: IPv6 address
A records have one ‘A’, while AAAA records have four ‘A’s.
What is a CNAME record used for in DNS?
Defines aliases for host names pointing to a canonical name
CNAME records allow multiple names to reference the same IP address.
What does the MX record stand for and what is its purpose?
Mail Exchanger record; specifies the mail server for a domain
MX records are crucial for sending and receiving emails.
What is the function of a TXT record in DNS?
Provides human-readable text information for various purposes
Common uses include SPF and DKIM configurations.
What does SPF stand for in the context of DNS TXT records?
Sender Policy Framework
SPF records specify which mail servers are authorized to send emails on behalf of a domain.
What is the purpose of a DKIM record in DNS?
Stores the public key for verifying digital signatures of emails
DKIM helps ensure the authenticity of email messages.
What do NS records specify in a DNS configuration?
Name servers for a particular domain
NS records are essential for performing name resolution.
What is a PTR record used for in DNS?
Provides reverse lookup information from IP address to domain name
PTR records allow querying a DNS server for a name based on an IP address.
True or false: An A record can be used to resolve an IPv6 address.
FALSE
A records are specifically for IPv4 addresses; AAAA records are used for IPv6.
Fill in the blank: The ________ record is used to define aliases for host names.
CNAME
CNAME records point to a canonical name for multiple aliases.
