Concept Guide

Term Definition
The choice of endspan or midspan depends on the capabilities of the
switch to which the W-IAP is connected. Typically if a switch is in place
and does not support PoE, midspan power injectors are used.
PPPoE Point-to-Point Protocol over Ethernet (PPPoE) is a method of connecting
to the Internet typically used with DSL services where the client connects
to the DSL modem.
QoS Quality of Service (QoS) refers to the capability of a network to provide
better service to a specific network traffic over various technologies.
RF Radio Frequency (RF) refers to the portion of electromagnetic spectrum
in which electromagnetic waves are generated by feeding alternating
current to an antenna.
TACACS Family of protocols that handle remote authentication and related
services for network access control through a centralized server.
TACACS+ Derived from TACACS but an entirely new and separate protocol to
handle AAA services. TACACS+ uses TCP and is not compatible with
TACACS. Because it encrypts password, username, authorization, and
accounting, it is less vulnerable than RADIUS.
VPN A Virtual Private Network (VPN) network that uses a public
telecommunication infrastructure, such as the Internet, to provide
remote offices or individual users with secure access to their
organization's network. A VPN ensures privacy through security
procedures and tunneling protocols such as the Layer Two Tunneling
Protocol ( L2TP ). Data is encrypted at the sending end and decrypted at
the receiving end.
W-CDMA Officially known as IMT-2000 direct spread; ITU standard derived from
Code-Division Multiple Access (CDMA). Wideband code-division multiple
access (W-CDMA) is a third-generation (3G) mobile wireless technology
that promises much higher data speeds to mobile and portable wireless
devices than commonly offered in today's market.
Wi-Fi A term for certain types of WLANs. Wi-Fi can apply to products that use
any 802.11 standard. Wi-Fi has gained acceptance in many businesses,
agencies, schools, and homes as an alternative to a wired LAN. Many
airports, hotels, and fast-food facilities offer public access to Wi-Fi
networks.
Table 80: List of Terms
Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide Terminology | 402