Schneider Electric 174 CEV User Manual

Page 84

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Glossary

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default gateway

The IP address of the network or host to which all packets addressed to an

unknown network or host are sent. The default gateway is typically a router or

other device.

DNS

Domain Name System. A protocol within TCP/IP used to find IP addresses based

on host names.

field

A logical grouping of contiguous bits that convey one kind of information, such as

the start or end of a message, an address, data or an error check.

frame

A group of bits which form a discrete block of information. Frames contain network

control information or data. The size and composition of a frame is determined by

the network technology being used.

framing types

Two common framing types are Ethernet II and IEEE 802.3.

FTP

File Transfer Protocol. A networking protocol used to exchange files between

stations on a network or over the Internet.

gateway

A device which connects networks with dissimilar network architectures and which

operates at the Application Layer. This term may refer to a router.

host

A node on a network.

hostname

A domain name given to a specific computer on a network and used to address

that computer.

HTTP

HyperText Transport Protocol. A protocol used to deliver hypertext documents.

hub

A device which connects a series of flexible and centralized modules to create a

network.

ICMP

Internet Control Message Protocol. A protocol within TCP/IP used to report errors

in datagram transmission.

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