A database administrator experiences delay when performing storage replication between primary and secondary data centers. The data centers are located 20 kilometers apart and are connected using a…

Resource Reservation Protocol (RSVP) is a signaling protocol used to reserve resources along a path, but it is not a queuing mechanism that directly prioritizes traffic transmission within a single device.

Weighted Round Robin (WRR) is a fair queuing mechanism that gives different weights to different queues, allowing some traffic types more bandwidth, but it does not guarantee immediate transmission like strict priority.

Differentiated Services (DiffServ) is a framework for classifying and marking traffic, but it defines how traffic should be treated, not a specific queuing discipline that inherently guarantees the lowest latency for critical traffic like strict priority.

Strict Priority Queuing (SPQ) ensures that replication traffic, when placed in a high-priority queue, is transmitted before any other traffic in lower-priority queues, guaranteeing preferential treatment and minimizing delays. For critical traffic like storage replication where minimal latency is paramount, strict priority is often the most effective queuing mechanism.