X-Micro XWL-11GPIG, Руководство пользователя

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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
administrators 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’s
IP address must be entered in manually. DHCP enables the network
administrators to assign the IP from a central location and each computer
receives an IP address upon connection 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.
Encryption
A security method that uses a specific algorithm to alter the data transmitted, thus
prevent others from knowing the information transmitted.
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