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Table Of Contents  CertiGuide to Network+
 9  Chapter 0101:  TCP/IP
      9  V  Name Resolution

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WINS

The other prominent name service, WINS (Windows Internet Name Service) is a modified Microsoft Access database. Its job is to map NetBIOS names to IP addresses when in a NT environment. Generally self tuning and repairing after installation, in an NT only server network, it grants NetBIOS names to be used when TCP/IP is the transport, without the need for HOST or LMHOST files. When a request is made by MS NetBIOS device name, WINS returns the IP address for the device.

WINS is tightly tied to DHCP in NT4. (DHCP is the service which automatically assigns network addresses to a computer when it boots. We’ll discuss it later in the chapter.) When activated on a Windows based network that is using DHCP to assign IP addresses, the WINS database is updated by DHCP when each address is assigned. Prior to Windows 2000, this was a major advantage for WINS over DNS, because earlier versions of DNS could not update themselves “on the fly” as host addresses were assigned.

Not until Windows 2000’s DDNS (Dynamic DNS) did DNS catch up with this ability that WINS has had for years.

DHCP & WINS

For the NETWORK+ test, the basics of DHCP and WINS are required. Advanced topics such as DHCP Relay Agent and WINS Proxy are visited on the MS TCP/IP test.



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WINS Configuration
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