Dns Flashcards
What does DNS stand for?
Domain Name System.
What is the primary purpose of DNS?
To translate domain names into IP addresses.
What is an A record in DNS?
Maps a domain name to an IPv4 address.
What is an AAAA record in DNS?
Maps a domain name to an IPv6 address.
What is a CNAME record in DNS?
Provides an alias for a domain name.
What is an MX record in DNS?
Specifies the mail server responsible for receiving emails for a domain.
What is a TXT record in DNS?
Stores text information for various purposes like SPF and DKIM.
What is an NS record in DNS?
Specifies the authoritative name servers for a domain.
What is the purpose of a PTR record in DNS?
Maps an IP address to a domain name; used for reverse DNS lookups.
What is an SOA record in DNS?
Specifies authoritative information about a domain, including the primary name server and admin contact.
What is the purpose of a DNS resolver?
To query DNS servers and retrieve the IP address for a domain name.
What is a recursive DNS query?
A query where the DNS server resolves the entire request by contacting other servers as needed.
What is an iterative DNS query?
A query where the DNS server provides a referral to another server rather than resolving the query itself.
What is the purpose of a forward lookup zone?
Translates domain names to IP addresses.
What is the purpose of a reverse lookup zone?
Translates IP addresses to domain names.
