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Wireless PC Card 
 
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ISP  – 
An  ISP  (Internet  Service  Provider) is a company that provides 
individuals and companies access to the Internet and other related
 
services
 
such as website building and virtual hosting.
 
 
LAN – 
A local area network (LAN) is a group of computers and associated 
devices that share a common communications line and typically share the 
resources of a single processor or server within a small geographic area   
(for example, within an office building). 
 
Latency – 
The time delay between when the first bit of a packet is received 
and the last bit is forwarded.
 
 
Link Quality – 
Indicates the Quality of data being received.
 
 
MAC Address  – 
The MAC (Media Access Control) address is a unique 
number assigned by the manufacturer to any  Ethernet networking device, 
such as a network adapter, that allows the network to identify it at the 
hardware level.
 
 
Mbps 
(Megabits per Second)  – One million bits per second; a unit of 
measurement of the speed of data transmission.
 
 
NAT  – 
NAT (Network Address Translation) is the translation of an Internet 
Protocol address (IP address) used within one network to a different IP 
address known within another network.  One network is designated the inside 
network and the other is the outside.   
 
 
 
 
Wireless PC Card 
 
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Network – 
A system that transmits any combination of voice, video, and/or 
data between users. 
 
NIC  (
Network  Interface  Card)  – A board installed in a computer system, 
usually a PC, to provide network communication capabilities to and from that 
computer system.  Also called an adapter. 
 
Packet Filtering  – 
Discarding unwanted network traffic based on its 
originating address or range of addresses or its type (e-mail, file transfer, etc.).
 
 
PCI (
Peripheral Component Interconnect
– A peripheral bus commonly used 
in PCs, Macintoshes and workstations.  It was designed primarily by Intel and 
first appeared on PCs in late 1993.  PCI provides a high-speed data path 
between the CPU and peripheral devices (video, disk, network, etc.).   
There are typically three of four PCI slots on the motherboard.  In a Pentium 
PC, there is generally a mix of PCI and ISA slots or PCI and EISA slots.  
Early on, the PCI bus was known as a “local bus.”   
PCI allows IRQs to be shared, which helps to solve the problem of limited 
IRQs available on a PC.  For example, if there were only one IRQ left over 
after ISA devices were given their required IRQs, all PCI devices could share 
it.  In a PCI-only machine, there cannot be insufficient IRQs, as all can be 
shared.
 
 
PCMCIA  – 
The PCMCIA (Personal Computer Memory Card International 
Association) is an industry group organized in 1989 to promote standards for a 
credit card-size memory or I/O device that would fit into a personal computer, 
usually a notebook or laptop computer.