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CHAPTER 1 : Domain Name System (DNS) In Windows Server Environment, GROUP…
CHAPTER 1 :
Domain Name System (DNS) In Windows Server Environment
1.1.1 Define the structure of DNS
Domain Name System (DNS) is a service that allows you to resolve a hostname to an Internet Protocol (IP) address.
Networked environments is working with multiple protocols and network addresses.
Most environments have transitioned to use Transmission Control Protocol/Internet Protocol (TCP/IP) as their primary networking protocol.
DNS can be described as an inverted tree structure The entire DNS tree is called the DNS namespace
Root servers keep a database of addresses of other DNS servers managing top-level domain names, called top-level domain (TLD) servers.
1.1.2 Explain DNS lookup process and DNS server roles
A zone is a grouping of DNS information that represents one or more domains and possibly sub-domains
Zones contain a variety of record types called resource records
:check: Static updates - administrator enters DNS record information manually.
:check:Dynamic updates - referred to as Dynamic DNS (DDNS)
:star: Iterative Queries -Iterative queries are the easiest to understand: A client asks the DNS server for an answer, and the server returns the best answer.
:star: Recursive Query - In a recursive query, the client sends a query to a name server, asking it to respond either with the requested answer or with an error message.
1.1.3 Follow steps in installing DNS with Active Directory
A domain controllers replicate with one another and when trusts are created between domains in different forests
A correct and an efficient functioning DNS is a must
The window will detect whether the server is configured as the domain controller or not
DNS is required to resolve names and services to IP addresses
Server Manager or Powershell is used to begin the installation of the DNS Server
The DNS server role should be installed in the controller if DNS want to manage the Domain Name Services on the Active : Directory
:check: Finally it will the integrates DNS zones with the Active Directory
1.1.4 Complete DNS zones creation
Introducing DNS Database Zones
Primary Zones
Secondary Zones
Stub Zones
:star: PRIMARY ZONE - The primary zone is responsible for maintaining all of the records for the DNS zone. It contains the primary copy of the DNS database. All record updates occur on the primary zone.
There are two types of primary zones
Primary zone
Primary zone with Active Directory Integration (Active DIrectory DNS)
:star:Local Database
Primary DNS zones get stored locally in a file (with the suffix .dns)
on the server.
This allows you to store a primary zone on a domain controller or a member server. local database has many disadvantages:
Lack of fault tolerance
Additional Network Traffic
No security
:star:SECONDARY ZONE - The secondary zone contains a database with all of the same information as the primary zone, and it can be used to resolve DNS requests.
Secondary zones have the following advantages:
A secondary zone provides fault tolerance, so if the primary zone server becomes unavailable, name resolution can still occur using the secondary zone server.
Secondary DNS servers can also increase network performance by offloading some of the traffic that would otherwise go to the primary server.
Secondary servers are often placed within the parts of an organization that have high-speed network access. This prevents DNS queries from having to run across slow wide area network (WAN) connections.
This way, when clients require name resolution, they will contact the nearest server for this IP address information, thus preventing unnecessary WAN traffic.
:star: STUB ZONE - Stub zones work a lot like secondary zone ,the database is a noneditable copy of a primary zone. The difference is that the stub zone’s database contains only the information necessary (three record types) to identify the authoritative DNS servers for a zone
GROUP
Aaron Manggi (05DDT19F1032)
Mohamad Irman (05DDT19F1001)
Muhammad Iyad Faiz (05DDT19F1026)
4436-Dominoes
