Information, Computer and Network Security Terms Glossary and
Dictionary
Preamble
A preamble is a signal used in network communications to synchronize the transmission timing between two or more systems. Proper timing ensures that all systems are interpreting the start of the information transfer correctly. A preamble defines a specific series of transmission pulses that is understood by communicating systems to mean "someone is about to transmit data".
Related Terms
Preamble
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