Which QoS queuing method transmits packets out of the interface in the order the packets arrive?

Custom queuing assigns packets to specific queues based on defined criteria and services them in a round-robin fashion, not strictly by arrival order.

Weighted Fair Queuing (WFQ) provides fair bandwidth allocation by prioritizing smaller packets and traffic from low-volume conversations, reordering packets from their arrival sequence.

FIFO (First-In, First-Out) queuing transmits packets from the interface in the exact sequence they arrived, ensuring no prioritization or reordering occurs based on content or type.

Priority queuing strictly prioritizes packets by assigning them to different priority queues, ensuring higher-priority packets are transmitted before lower-priority ones, regardless of arrival order.