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Lesson 07: Deploying DNS Service

Presentation slides are here.

Objectives
  • Configure Active Directory integration of primary zones
  • Configure forwarders 
  • Configure Root Hints 
  • Manage DNS cache
  • Create A and PTR resource records
Vocabulary

caching-only server: A Domain Name System server that has the ability to process incoming queries from resolvers and send its own queries to other DNS servers on the Internet, but which is not the authoritative source for any domain and hosts no resource records of its own.
country-code top level domain (ccTLD): A top-level domain code using two letters to represent a particular country.

domain: A set of network resources available for a group of users who can authenticate to the network to gain access to those resources.

forwarder: A Domain Name System server that is configured to send the name resolution requests it receives from clients to another DNS server, specified by an administrator, using recursive, not iterative, queries.
fully qualified domain name (FQDN): In Domain Name System, the complete DNS name for a particular computer, consisting at minimum of a host name, a second-level domain name, and a top-level domain name, written in that order and separated by periods.
generic top-level domain (gTLD): A top-level domain name referring to specific type of resource, as designated by ICANN.  

global domain: The com, org, and net domains that organizations anywhere in the world may use in order to register second-level domains.

host: In TCP/IP, the network interface inside a computer or other device on a network. 

host table: In TCP/IP, a list of host names and their equivalent IP addresses, used for name resolution in the early days of the Internet.

iterative query: In Domain Name System, a name resolution request in which the DNS server immediately responds with the best information it possesses at the time. Compare with recursive query. 

name resolution: The process by which a Domain Name System server or other mechanism converts a host name into an IP address.

negative caching: The ability of a DNS server to retain information about names that do not exist in a domain

recursive query: In Domain Name System, a name resolution request in which the DNS server takes full responsibility for resolving the name. If the server has no information about the name, it sends referrals to other DNS servers until it obtains the information it needs. Compare with iterative query. 

referral: The process by which one Domain Name System server sends a name resolution request to another DNS server.

resolver: In the Domain Name System, a client program that generates DNS queries and sends them to a DNS server for fulfillment.

resource record: In the Domain Name System, a unit of information that can contain host names, IP addresses, and other data.

reverse name resolution: In the Domain Name System, the process by which a server converts an IP address into a DNS name. 

root name servers: The highest-level DNS servers in the entire Domain Name System namespace, which maintain information about the top-level domains.

zone: In the Domain Name System, an administrative entity created on a DNS server to represent a discrete portion of the DNS namespace. 

zone transfer: In the Domain Name System, the process by which the server hosting the primary zone copies the primary master zone database file to the secondary zone so that their resource records are identical. 
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