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Glossary
DOM
The Document Object Model (DOM) is an interface that allows programs and scripts to dynamically
access and update the content, structure, and style of documents. The DOM allows you to model
the objects in an HTML or XML document (text, links, images, tables), defining the attributes of
each object and how they can be manipulated.
Further details about the DOM can be found at the W3C.
DTIM
The Delivery Traffic Information Map (DTIM) message is an element included in some
Beacon
frames. It indicates which stations, currently sleeping in low-power mode, have data buffered on
the
Access Point
awaiting pickup. Part of the DTIM message indicates how frequently stations
must check for buffered data.
Dynamic IP Address
See
IP
Address.
EAP
The Extensible Authentication Protocol (EAP) is an authentication protocol that supports
multiple methods, such as token cards, Kerberos, onetime passwords, certificates, public key
authentication, and smart cards.
Variations on EAP include EAP Cisco Wireless (LEAP), Protected EAP (PEAP), EAP-TLS, and
EAP Tunnelled TLS (EAP-TTLS).
ESS
An extended service set (ESS) is an
Infrastructure Mode Wireless Networking Framework
with
multiple access points, forming a single subnetwork that can support more clients than a basic
service set (BSS). Each access point supports a number of wireless stations, providing broader
wireless coverage for a large space, for example, an office.
Ethernet
Ethernet is a local-area network (LAN) architecture supporting data transfer rates of 10Mbps to
1Gbps. The Ethernet specification is the basis for the
IEEE 802.3
standard, which specifies the
physical and lower software layers. It uses the
CSMA/CA
access method to handle simultaneous
demands.
Ethernet supports data rates of 10 Mbps, Fast Ethernet supports 100 Mbps, and Gigabit Ethernet
supports 1Gbps. Its cables are classified as "XbaseY", where X is the data rate in Mbps and Y
is the category of cabling. The original cable was 10base5 (Thicknet or "Yellow Cable"). Some
others are 10base2 (Cheapernet), 10baseT (Twisted Pair), and 100baseT (Fast Ethernet). The
latter two are commonly supplied using CAT5 cabling with RJ-45 connectors. There is also
1000baseT (Gigabit Ethernet).
ERP
The Extended Rate Protocol refers to the protocol used by
IEEE 802.11g
stations (over 20 Mbps
transmission rates at 2.4GHz) when paired with Orthogonal Frequency Division Multiplexing
(OFDM). Built into ERP and the IEEE
802.11g
standard is a scheme for effective interoperability
of IEEE 802.11g stations with IEEE 802.11b nodes on the same channel.
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