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What is Multiprotocol Label Switching(MPLS)?
a protocol that needs multiple layer-2 networks to satisfy different types of traffic
a scalable, protocol-independent transport
a static, dependent on Asynchronous Transfer Mode (ATM) protocol
a single dedicated circuit dependent on one type of transport medium
Multiprotocol Label Switching (MPLS) is a type of data-carrying technique for high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. The labels identify virtual links (paths) between distant nodes rather than endpoints. MPLS can encapsulate packets of various network protocols, hence its name "multiprotocol". MPLS supports a range of access technologies, including T1/E1, ATM, Frame Relay, and DSL.
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