Compex Technologies NP25G 6C User Manual

Page 105

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Driver

A piece of software developed to interface a piece of hardware

with its immediate upper-layer software (i.e. operating system) so

that it can be recognized and operated.

DSSS

Direct Sequence Spread Spectrum is a modulation scheme

employed by the 802.11b standard that uses a chipping code

(redundant bit) during its transmission to reject interference.

Dynamic IP

Address

It is an IP address that is dynamically allocated or assigned to a client

device within a TCP/IP network, typically by a DHCP server.

Encryption

Encryption is a security method applying specific algorithms to make

sure that all the data from one computer is encoded into a form that
only the intended party will be able to decode to view the

information.

Ethernet

An IEEE standard network protocol that specifies how data is

transmitted over a common medium. It uses CSMA/CD, which stands
for Carrier Sense Multiple Access with Collision Detection. It has a

defined data rate of 10Mbps.

Fast Ethernet

An IEEE standard extended from 10Base-T Ethernet to support

100Mbps data rate.

Firewall

It is a software layer that controls network access from within and

without so that undesired activity by malicious or snooping parties

may be prevented.

Firmware

It is a software code written and saved within the read-only memory

(ROM) of the device so that it is retained even when the device is
powered off.

FTP

File Transfer Protocol. It is a protocol designed to transfer files over a
TCP/IP network.

Full Duplex

It defines the ability of a device to transmit data simultaneously in
both upstream and downstream directions over a single line.

Half Duplex

It defines the ability of a device to transmit in one direction at a time
over a single line.

HTTP

HyperText Transport Protocol is a common protocol used to connect

servers on the World Wide Web, with its primary function being to

establish a connection with a web server and transmit HTML pages to
the client’s browser.

ICMP

Internet Control Message Protocol is a message control and error

reporting protocol between a host server and a router to the Internet.

ICMP uses Internet Protocol (IP) datagrams, but the messages are

processed by the IP software and are not directly apparent to the
application user.

IGMP

Internet Group Management Protocol is the standard for IP

multicasting on the Internet. It is used to establish host memberships in

particular multicast groups on a single network. The mechanisms of

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