Practice Exams for Windows

Practice Exams for Windows

Tuesday, 4 September 2007

Most Common DNS Resource Records (MCP Series)

The 7 most common DNS Resource Records used on Windows 2003 Server are:
  1. A Record - The most common resource record type. The A record maps a DNS host name (FQDN) to an IP address
  2. C Name (Canonical Name) - The CNAME record provides alternate DNS names or aliases to hosts that already have an A Record.
  3. MX Record (Mail Exchanger) - The MX record identifies server that can be used to deliver mail for a domain.
  4. NS (Name Server) - The NS Resource Record identifies all the DNS servers that can perform name resolution for the domain. There is usually an entry for the Primary Name Server and all the Secondary Name Servers.
  5. PTR (Pointer) - Essentially the reverse of an A Record. This record maps an IP Address to a Host Name or A Record.
  6. SOA (Start of Authority) - The first entry on any DNS Database should be the SOA record. This record includes the general parameters of the DNS Zone.
  7. SRV (Service Locator) - The SRV Record is used by Windows 2003 Server to register network services with the DNS Server. Windows 2003 Server will automatically create these records as required.
There are many more DNS Resource Records and you can find out all about the Records not listed here by visiting Wikipedia.

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