Glossary
Packet: A block of data that is transferred as a single unit, also called a frame or a block.
Packet Filtering: Discarding unwanted network traffic based on its originating address or its type.
PCI (Peripheral Component Interconnect): A bus that is connected directly to the CPU.
PCMCIA (Personal Computer Memory Card International Association) Card: Removable module that adds features to a portable computer.
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
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
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