What is dhcb?
No idea. Below information obtained here:
http://support.microsoft.com/kb/169289 may help. DHCP (Dynamic Host
Configuration Protocol) is a standard protocol defined by RFC 1541
(which is superseded by RFC 2131) that allows a server to
dynamically distribute IP addressing and configuration information
to clients. Normally the DHCP server provides the client with at
least this basic information: • IP Address
• Subnet Mask
• Default Gateway Other information can be provided as well,
such as Domain Name Service (DNS) server addresses and Windows
Internet Name Service (WINS) server addresses. The system
administrator configures the DHCP server with the options that are
parsed out to the client.