D-Link AirPremier DWL-2210AP Manual page 170

Glossary
CSMA/CA
Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) is a low-level network
arbitration/contention protocol. A station listens to the media and attempts to transmit a packet
when the channel is quiet. When it detects that the channel is idle, the station transmits the
packet. If it detects that the channel is busy, the station waits a random amount of time and then
attempts to access the media again.
CSMA/CA is the basis of the IEEE 802.11e Distributed Control Function (DCF). See also
and CTS.
The CSMA/CA protocol used by
networks). In CSMA/CD the emphasis is on collision detection whereas with CSMA/CA the
emphasis is on collision avoidance.
CTS
A clear to send (CTS) message is a signal sent by an
a request to send (RTS) message. The CTS message indicates that the channel is clear for the
sender of the RTS message to begin data transfer. The other stations will wait to keep the air
waves clear. This message is a part of the IEEE 802.11
DCF
The Distribution Control Function is a component of the IEEE 802.11e Quality of Service (QoS)
technology standard.The DCF coordinates channel access among multiple stations on a wireless
network by controlling wait times for channel access. Wait times are determined by a random
backoff timer which is configurable by defining minimum and maximum contention windows.
DHCP
The Dynamic Host Configuration Protocol (DHCP) is a protocol specifying how a central server
can dynamically provide network configuration information to clients. A DHCP server "offers" a
"lease" (for a pre-configured period of time—see
supplied includes the client's IP addresses and netmask plus the address of its
and Gateway.
DNS
The Domain Name Service (DNS) is a general-purpose query service used for translating fully-
qualified names into Internet addresses. A fully-qualified name consists of the hostname of a
system plus its domain name. For example, www is the host name of a Web server and www.
dlink.com is the fully-qualified name of that server. DNS translates the domain name www.dlink.
com to some IP address, for example 66.93.138.219.
A domain name identifies one or more IP addresses. Conversely, an IP address may map to
more than one domain name.
A domain name has a suffix that indicates which top level domain (TLD) it belongs to. Every
country has its own top-level domain, for example .de for Germany, .fr for France, .jp for
Japan, .tw for Taiwan, .uk for the United Kingdom, .us for the U.S.A., and so on. There are
also .com for commercial bodies, .edu for educational institutions, .net for network operators,
and .org for other organizations as well as .gov for the U. S. government and .mil for its
armed services.
802.11 networks is a variation on CSMA/CD (used by
Lease
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IEEE 802.11 client station in response to
CSMA/CA protocol. (See also RTS.)
Time) to the client system.The information
RTS
Ethernet
DNS servers