DNS Flashcards
DNS
domain name system
what does the dns do
translate human names into computer readable op address
how many dns servers
13 root (1000 actual(
Query that is made to a DNS server that requires a response from said server. local server has cached
Recursive Query
A query is made to a DNS server and if that server has the information in cache or is authoritative for that zone then it gives the answer, if not it sends a referral to another DNS server. local device will cache
Iterative Query
.com, .net, .gov, .edu, .mil, .org are examples of ____ ____ domains.
TLD - Top Level Domains
This type of DNS record lets us know which name server zone name, serial number, refresh timeframes time to live
An SOA record
This DNS record type maps a domain name such as directly to an IP address?
An A record
This DNS record type acts like an alias linking together resources by domain instead of by IP. makes an alias
A CNAME record
help clients find another service like messaging voice or domain controller
srv records
This DNS record type indicates that the server can handle email traffic
An MX record
This type of DNS record identifies the name servers for a zone.
A NS record
reveres of an a record provide ip returns domain name
pointer record
readable records prevents mail spoofing, digitately sign main
text records
zone transfers
replicate a dns database to a secondary server
