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A '''packet-switched network''' means that [[data]] [[transmit]]ted over the [[network]] is split up into small chunks, or "[[packet]]s." In packet-switched systems, the [[information]] is broken down into smaller pieces called “[[packet]]s” using a [[digital]] process. Each [[packet]] contains a small part of the [[message content]] along with [[call-identifying information]] called a “[[header]]” that indicates the [[origination]] and [[destination]] points of the [[information]].
== Definition ==
 
   
  +
The packet-switched mode is the signal transmission technology used in all
A '''packet-switched network''' means that [[data]] [[transmit]]ted over the [[network]] is split up into small chunks, or "[[packet]]s."
 
 
[[Internet]] communications. Packet switching is considered a more efficient use of a [[network]] than [[circuit switching]] because the same line can be used for multiple communications simultaneously.
 
== Overview ==
 
 
In packet-switched systems, the [[information]] is broken down into smaller pieces called “[[packet]]s” using a [[digital]] process. Each [[packet]] contains a small part of the [[message content]] along with [[call-identifying information]] called a “[[header]]” that indicates the [[origination]] and [[destination]] points of the [[information]].
 
 
The packet-switched mode is the signal transmission technology used in all [[Internet]] communications. Packet switching is considered a more efficient use of a [[network]] than [[circuit switching]] because the same line can be used for multiple communications simultaneously.
 
   
 
Unlike "circuit-switched" networks such as the [[public switched telephone network]] ([[PSTN]]), a packet-switched network is "connectionless." In other words, a dedicated end-to-end transmission path (or circuit) does not need to be opened for each [[transmission]]. Rather, each [[router]] calculates the best [[routing]] for a [[packet]] at a particular moment in time, given current [[traffic]] patterns, and sends the [[packet]] to the next [[router]]. Thus, even two [[packet]]s from the same [[message]] may not travel the same physical path through the [[network]]. This mechanism is referred to as "[[dynamic routing]]."
 
Unlike "circuit-switched" networks such as the [[public switched telephone network]] ([[PSTN]]), a packet-switched network is "connectionless." In other words, a dedicated end-to-end transmission path (or circuit) does not need to be opened for each [[transmission]]. Rather, each [[router]] calculates the best [[routing]] for a [[packet]] at a particular moment in time, given current [[traffic]] patterns, and sends the [[packet]] to the next [[router]]. Thus, even two [[packet]]s from the same [[message]] may not travel the same physical path through the [[network]]. This mechanism is referred to as "[[dynamic routing]]."
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[[Category:Technology]]
 
[[Category:Technology]]
 
[[Category:Internet]]
 
[[Category:Internet]]
[[Category:Definition]]
 

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