Symantec NORTON INTERNET SECURITY 2004, User Manual

Page: 213 / 230

Glossary 213
DNS (Domain Name
System) The naming system used on the Internet. DNS
translates domain names (such as
www.symantec.com) into IP addresses that
computers understand (such as 206.204.212.71).
DNS server (Domain
Name System
server) A computer that maps domain names to IP addresses.
When you visit www.symantec.com, your computer
contacts a DNS server that translates the domain
name into an IP address (206.204.212.71).
domain
The common Internet address for a single company or
organization (such as symantec.com). See also host
name.
DOS window A method of accessing the MS-DOS operating system
to execute DOS programs through the Windows
graphical environment.
download
To transfer a copy of a file or program from the
Internet, a server, or computer system to another
server or computer.
driver Software instructions for interpreting commands for
transfer to and from peripheral devices and a
computer.
encryption Encoding data in such a way that only a person with
the correct password or cryptographic key can read it.
This prevents unauthorized users from viewing or
tampering with the data.
Ethernet A common method of networking computers in a LAN
(local area network). Ethernet cables, which look like
oversized phone cables, carry data at 10M bps or
100M bps.
executable file A file containing program code that can be run.
Generally includes any file that is a program,
extension, or system files whose names end with .bat,
.exe, or .com.