Quatech AirborneDirect WLNG-ET Series Especificaciones descargar pdf (Pagina 52)

Glossary

Page 46 Airborne™ Product Family CLI Reference Guide 100-8005-101G

Quatech, Inc. Confidential

RADIUS

Remote Authentication Dial In User Service. A backend server that performs

authentication using Extensible Authentication Protocol (EAP). This server is

required by the IEEE 802.1X security standard.

RS-232

An EIA standard that specifies up to 20 Kbps, 50 foot serial transmission

between computers and peripheral devices.

RTOS

An operating system implementing components and services that explicitly

offer deterministic responses, and therefore allow the creation of real-time

systems. An RTOS is characterized by the richness of the services it

provides, the performance characteristics of those services, and the degree

that those performance characteristics can be controlled by the application

engineer

(to satisfy the requirements of the application).

Service Set Identifier

(SSID)

An identifier attached to packets sent over the wireless LAN that functions as

a "password" for joining a particular radio network (BSS). All radios and

Access Points within the same BSS must use the same SSID or their packets

will be ignored.

SPI

Short for Serial Peripheral Interface, a full-duplex serial interface for

connecting external devices using four wires. SPI devices communicate

using a master/slave relationship over two data lines and two control lines.

Supplicant

The entity being authenticated by the authenticator and desiring access to the

services of the authenticator.

Telnet

A virtual terminal protocol used (e.g., with the Internet) to enable users to log

into a remote Host.

TKIP

Temporal Key Integrity Protocol and is used in encryption. TKIP is an IEEE

802.11i standard and an enhancement to WEP security.

Transceiver

A device for transmitting and receiving packets between the computer and

the medium.

Transmission

Control Protocol

(TCP)

A commonly used protocol for establishing and maintaining communications

between applications on different computers. TCP provides full-duplex,

acknowledged, and flow-controlled service to upper-layer protocols and

applications.

UDP

Short for User Datagram Protocol, UDP is a connectionless protocol that, like

TCP, runs on top of IP networks. Unlike TCP/IP, UDP/IP provides very few

error recovery services, offering instead a direct way to send and receive

datagrams over an IP network. It's used primarily for broadcasting messages

or sending streaming data (e.g., video) over a network.

Wide Area Network

(WAN)

A communication system of connecting PCs (and other computing devices)

across a large local, regional, national, or international geographic area. Also

used to distinguish between phone-based data networks and Wi-Fi. Phone

networks are considered WANs and Wi-Fi networks are considered wireless

LANs.

Wi-Fi

Wi-Fi is a name for 802.11 wireless network technology.

Wi-Fi Alliance

A non-profit international association formed in 1999 to certify interoperability

of wireless LAN products based on the IEEE 802.11 specification.

Wired Equivalent

Privacy (WEP)

A security protocol for wireless LANs defined in the IEEE 802.11 standard.

WEP is designed to provide the same level of security as a wired LAN.

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