Chapter 1. Before You Start
Air Live IAS-2000 User’s Manual V1.0
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Ethernet
International standard networking technology for wired implementations. Basic 10BaseT networks offer a bandwidth
of about 10 Mbps. Fast Ethernet (100 Mbps) and Gigabit Ethernet (1000 Mbps) are becoming popular.
Firewall
A system that secures a network and prevents access by unauthorized users. Firewalls can be software, hardware
or a combination of both. Firewalls can prevent unrestricted access into a network, as well as restrict data from
flowing out of a network.
Firmware
1. In network devices, the program that runs the device.
2. Program loaded into read-only memory (ROM) or programmable read-only memory (PROM) that cannot be
altered by end-users.
Fragmentation
Breaking a packet into smaller units when transmitting over a network medium that cannot support the original size
of the packet.
FTP
File Transfer Protocol. A standard protocol for sending files between computers over a TCP/IP network and the
Internet.
Full Duplex
The ability of a networking device to receive and transmit data simultaneously.
Gateway
In the wireless world, a gateway is an access point with additional software capabilities such as providing NAT and
DHCP. Gateways may also provide VPN support, roaming, firewalls, various levels of security, etc.
Half Duplex
Data transmission that can occur in two directions over a single line, but only one direction at a time.
Hardware
The physical aspect of computers, telecommunications, and other information technology devices.
Hotspot
A place where you can access Wi-Fi service. This can be for free or for a fee. HotSpots can be inside a coffee shop,
airport lounge, train station, convention center, hotel or any other public meeting area. Corporations and campuses
are also implementing Hot Spots to provide wireless Internet access to their visitors and guests. In some parts of the
world, Hot Spots are known as Cool Spots.
