Which feature can you implement to reduce global synchronization?

Policing aggressively drops packets when a configured rate is exceeded, which can contribute to global synchronization if multiple flows are policed simultaneously.

WRED (Weighted Random Early Detection) is a congestion avoidance mechanism that randomly drops packets before a queue is full, based on calculated average queue depth. This early, random dropping helps to prevent multiple TCP flows from simultaneously entering congestion avoidance, thus reducing the likelihood of global synchronization.

NBAR (Network-Based Application Recognition) is used for classifying traffic based on application and protocol, not for congestion avoidance or preventing global synchronization.

Marking (e.g., DSCP or CoS) is a quality of service mechanism used to prioritize traffic, but it does not directly prevent global synchronization; it works in conjunction with other mechanisms like WRED.