Glossary – Sony PCWA-A500 User Manual

Page 29

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Additional inf




Channel number

The frequency used for wireless
communications. Wireless
communications are available only among
client computers and Access Points that
use the same channel.


A computer connected to a LAN (Local
Area Network). Also may be called a
client computer.

DHCP (Dynamic Host
Configuration Protocol)

DHCP lets network administrators
centrally manage and automate
assignment of client computer IP

DNS (Domain Name System)

A system that translates host names into
IP addresses.

Networks that use the TCP/IP protocol,
such as the Internet, use a set of numbers
like (IP address) to identify a
computer. However, since the IP address
is hard to memorize, DNS was developed
to allow a name like “” to
identify a computer for convenience. DNS
servers manage these translations from
host names into IP addresses.

LAN (Local Area Network)

A network which is accessible only to its
members, unlike the Internet which is
open to an unlimited number of people. A
LAN may be built for different purposes.
For example, you can build an office LAN
that is accessible only to members of the
same department or a home LAN that is
accessible only to family members.

PPPoE (PPP over Ethernet)

PPPoE is a software protocol that uses a
DSL modem to access the Internet.

With PPPoE, the client does not set a
static IP address. Instead, an IP address is
assigned dynamically whenever the client
accesses the Internet.


The formal specifications that define the
procedures for computers to follow when
transmitting and receiving data.

TCP/IP (Transmission Control
Protocol/Internet Protocol)

TCP/IP is the network communications
protocol that is used to communicate over
the Internet. TCP is a connection-oriented
protocol for establishing reliable,
sequenced data transfer. TCP ensures that
data reaches its destination.

IP assembles and addresses data packets
for transmission to their network