Capterra Glossary
IT
Preamble

Capterra Glossary

Preamble

In computer networking, the term ‘preamble’ is defined as a network communications signal that synchronizes data transmission between two or more computer systems. A preamble is one part of an Ethernet data frame’s contents, defined as the contents of a single data packet transmitted over an Ethernet connection. An Ethernet preamble is delivered to a network receiver in the form of a binary pattern (1s and 0s). 

A preamble updates a data packet’s delivery status to a network receiver.

What Small and Midsize Businesses Need to Know About Preamble

Small and midsize companies typically connect their network devices using an Ethernet connection, which carries information using data frames and packets across network devices by navigating local area networks (LANs) or wide area networks (WANs). 

To implement data link protocol (transfer information across network devices), a data frame should include a preamble, which will update the packet’s delivery status to the network receiver.

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