Well no...
A Windows machine's NetBIOS name is not to be confused with the computer's host name. Generally a computer running TCP/IP (whether it's a Windows machine or not) has a host name (also sometimes called a machine name or a DNS name). Generally the host name of a Windows computer is based on the NetBIOS name plus the Primary DNS Suffix, which are both set in the System Properties dialog box.
There may also be "connection specific suffixes" which can be viewed or changed on the DNS tab in Control Panel → Network → TCP/IP → Advanced Properties. Host names are used by applications such as telnet, ftp, Web Browsers, etc. In order to connect to a computer running the TCP/IP protocol using its HOST name, the host name must be resolved into an IP Address. Host name- or Fully Qualified Domain Name (FQDN)-IP address resolution is typically done by a Domain Name System (DNS) server.
Copied from wiki. I really couldn't have explained it any better.
http://en.wikipedia.org/wiki/NetBIOS
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