Which protection type continuously sends duplicate traffic on both primary and backup paths?

1+1 Protection is a method of network redundancy that is designed to ensure high availability and reliability. In this protection scheme, duplicate traffic is actively sent simultaneously over both the primary and backup paths. This means that if the primary path fails, the backup path already has the same data, allowing for immediate failover without any loss of data or interruption of service.

The continuous transmission of duplicate data is crucial in environments where downtime is unacceptable, such as in telecommunications or critical data services. Since both paths carry the same traffic, the receiving end can select the better quality copy, ensuring minimal disruption.

Other options such as Link Aggregation, Path Diversity, and Traffic Shaping do not function in the same manner. Link Aggregation combines multiple network connections to enhance bandwidth and redundancy, but it does not send duplicate traffic on separate paths. Path Diversity offers multiple routes for resilience but does not inherently involve sending duplicate streams simultaneously. Traffic Shaping involves managing bandwidth and controlling traffic flows rather than duplicating data for redundancy.