NAME RESOLUTION

NAME RESOLUTION

62. Domain Naming Service (DNS) supports fully qualified domain name (FQDN) resolution, whereas the Windows Internet Naming Service (WINS) is used for NetBIOS name resolution. Windows Server 2003 Active Directory utilizes Dynamic DNS (DDNS) registration for its name service needs.

63. DNS is not installed by default, except during Active Directory configuration when no compatible DDNS server is available.

64. DNS servers may be configured as caching-only, primary, or secondary servers. A DNS server's properties include the Interfaces, Forwarders, Advanced, Root Hints, Debug Logging and Event logging, Monitoring, and Security tabs.

65. Zones may be Forward (name to IP address) or Reverse (IP address to name) lookup, and each zone may be Active Directory “integrated, primary, secondary ( copied from the Primary through Zone Transfer), or stub (used to redirect queries to delegated DNS server) zones. The zone type may be changed within the DNS MMC snap-in or by the dnscmd utility.

66. Forward lookup zones are named based on the FQDN they support, whereas reverse lookup zones are named based on the IP address subnet they support.

67. To function, the Nslookup utility requires that a reverse lookup zone be present.

68. Active Directory “integrated zones replicate only changed data during normal AD replication and may be placed only on AD domain controllers. Primary and secondary zone transfers occur based on a scheduled replication transfer of all zone data by default, although Windows Server 2003 DNS supports incremental zone transfers as well.

69. Zone properties include the general settings, start of authority (SOA), name servers (NS), WINS (optional) forward lookup, zone transfer settings, and security (for AD-integrated zones). Stub zones include only the SOA, NS, master DNS server IP addresses, and a new Glue A type of delegation resource record.

70. DHCP servers can be configured to dynamically register DNS information for Windows NT/98 clients unable to register themselves in the Active Directory (AD), to allow the use of secure dynamic updates for all AD members .

71. Windows Server 2003 adds conditional forwarding to allow name-specific forwarding of resolution requests in addition to the standard name lookup forwarding function.

72. DNS zone management includes configuration of default application directory partitions, aging/scavenging of resource records, scavenging stale resource records, updating server data files, clearing the cache, and use of the Nslookup utility to resolve problems.