3
Ping (Packet Internet Groper):
An Internet
utility used to determine whether a
particular IP address is online.
Plug and Play:
Hardware that, once
installed (“plugged in”), can immediately
be used (“played”), as opposed to hardware
that requires manual configuration.
PoE (Power over Ethernet):
A mechanism
to send DC power to a device using a CAT5
Ethernet cable.
PPPoE (Point-to-Point Protocol over
Ethernet):
A specification for connecting
users on an Ethernet line to the Internet
through a common broadband medium.
Protocol:
A standard way of exchanging
information between computers.
RADIUS (Remote Authentication Dial
In User Service):
A server that issues
authentication key to clients.
RAM (Random Access Memory):
Non-
permanent memory.
Repeater Hub:
A device that collects,
strengthens and transmits information to
all connected devices, allowing the network
to be extended to accommodate additional
workstations.
RC4:
The encryption algorithm that is used
in WEP.
RJ-45 connector:
An 8-pin connector used
between a twisted pair cable and a data
transmission device.
ROM (Read Only Memory):
Permanent
memory.
Router:
Device that can connect individual
LANs and remote sites to a server.
Roaming:
The ability to use a wireless
device while moving from one access point
to another without losing the connection.
Script:
A macro or batch file containing
instructions and used by a computer to
perform a task.
Glossary
