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52     Microsoft Broadband Networking Wireless PCI Adapter User’s Guide 
 
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computer-to- 
A network configuration in which any computer can connect directly  
  computer network 
to any other computer on the network. Contrast with “client/server 
network.”  
 
crossover cable 
See “Ethernet cable.” 
 
DHCP 
Acronym for “Dynamic Host Configuration Protocol.” DHCP is an 
Internet protocol that automatically assigns temporary Internet 
Protocol (IP) addresses to computers.  
 
DMZ 
See “virtual DMZ.” 
 
DNS 
Acronym for “Domain Name System.” A data query service used on 
the Internet for translating host names, such as www.microsoft.com, 
into Internet addresses that can be understood by computers.  
 
domain 
A collection of computers on a network that share a common user 
database and security policy. A domain is administered as a unit 
with common rules and procedures by the domain administrator. 
Each domain has a unique name.  
 
DSL 
Acronym for “Digital Subscriber Line.” A constant, high-speed digital 
connection to the Internet that uses a dedicated telephone line. 
dynamic IP address 
A dynamic Internet Protocol (IP) address is a unique identifier that is 
assigned temporarily (by using the Dynamic Host Configuration 
Protocol, or DHCP) to a device that requires it. IP addresses are 
required for computers to find one another and communicate over 
the Internet. Contrast with “static IP address.”    
 
Ethernet 
A networking standard that uses cables to transmit data between 
computers. Also known as the IEEE 802.3 standard.  
 
Ethernet cable 
A type of cable that transmits data between computers. A widely 
used network technology. There are two types of Ethernet cables, 
straight-through and crossover, that differ in how the connectors on 
each end of the cable are wired. Ethernet cables can support speeds 
of 10 megabits per second (Mbps), 100 Mbps, and higher. 
 
file sharing 
See “sharing.” 
 
firewall 
A security system that helps protect a network from hacker attacks 
and other threats that originate outside the network. A hardware 
firewall is a device at the entrance to a network that has specific 
data-checking settings and that helps protect all of the devices 
connected to it. A software firewall resides on a single computer, 
helping to protect that computer from external threats. 
 
firmware 
Software information loaded in permanent memory on a device. 
 
gateway 
See “base station.”  
 
host name 
The Domain Name System (DNS) name of a device on a network, a 
name such as www.microsoft.com.