LevelOne WAP-0003, Руководство пользователя

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Browser ? An application program that enables one to read the content and interact in the
World Wide Web or Intranet.
BSS ? BSS stands for “Basic Service Set”. It is an Access Point and all the LAN PCs that
associated with it.
Channel ? The bandwidth which wireless Radio operates is divided into several segments,
which we call them “Channels”. AP and the client stations that it associated work in one of the
channels.
CSMA/CA ? In local area networking, this is the CSMA technique that combines slotted
time-division multiplexing with carrier sense multiple access/collision detection (CSMA/CD) to
avoid having collisions occur a second time. This works best if the time allocated is short
compared to packet length and if the number of situations is small.
CSMA/CD ? Carrier Sense Multiple Access/Collision Detection, which is a LAN access method
used in Ethernet. When a device wants to gain access to the network, it checks to see if the
network is quiet (senses the carrier). If it is not, it waits a random amount of time before retrying.
If the network is quiet and two devices access the line at exactly the same time, their signals
collide. When the collision is detected, they both back off and wait a random amount of time
before retrying.
DHCP ? Dynamic Host Configuration Protocol, which is a protocol that lets network
eblinistrators manage and allocate Internet Protocol (IP) addresses in a network. Every
computer has to have an IP address in order to communicate with each other in a TCP/IP based
infrastructure network. Without DHCP, each computer must be entered in manually the IP
address. DHCP enables the network administrators to assign the IP from a central location and
each computer receives an IP address upon plugged with the Ethernet cable everywhere on the
network.
DSSS ? Direct Sequence Spread Spectrum. DSSS generates a redundant bit pattern for each
bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the
greater the probability that the original data can be recovered. Even if one or more bits in the
chip are damaged during transmission, statistical techniques embedded in the radio can recover
the original data without the need for retransmission. To an unintended receiver, DSSS appears
as low power wideband noise and is rejected (ignored) by most narrowband receivers.
Dynamic IP Address ? An IP address that is assigned automatically to a client station in a
TCP/IP network by a DHCP server.