Fragmentation- Breaking a packet into smaller units when transmitting over a network medium that cannot support the original size of the packet.

Infrastructure- An integrated wireless and wired LAN is called an infrastructure configuration.

IRQ- Interrupt ReQuest, A hardware interrupt on a PC. There are 16 IRQ lines used to signal the CPU that peripheral event has started or terminated. In most cases, two devices cannot use the same line.

PCMCIA- Personal Computer Memory Card International Association, which develops standards for PC cards, formerly known as PCMCIA cards, are available in three types which are about the same length and width as credit cards, but range in thickness from 3.3mm(Type I), 5.0mm(Type II), to 10.5mm(Type III). These cards can be used for many functions, including memory storage, as landline modems and as wireless LAN.

Roaming- A function that allow one to travel with a mobile end system (wireless LAN mobile station, for example) through the territory of domain(an ESS, for example) while continuously connecting to the infrastructure.

RTS- Request to Send, An RS-232 signal sent from the transmitting station to the receiving station requesting permission to transmit.

Throughput- The amount of data moved successfully from one place to another in a given time period.

Tx Rate- Transmission Rate.

WEP- Wired Equivalent Privacy, A data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as described in IEEE 802.11 standard.

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