What term describes the method used to buffer and schedule packets for transmission?

What term describes the method used to buffer and schedule packets for transmission?

• A. The method used to buffer and schedule packets for transmission.
• B. The process of dropping packets randomly.
• C. The mapping of DSCP values to queues only.
• D. The concept of queuing theory for CPU tasks.

Answer: (A)

Packet queuing is the mechanism that buffers and schedules packets for transmission. In network devices, arriving packets are placed into buffers (queues) and held briefly before being sent out, with a scheduling policy deciding which packet goes next. This process controls how bandwidth is shared, keeps latency and jitter under control, and enables quality-of-service by prioritizing certain traffic or fairness among flows. Different scheduling methods—like first-in, first-out, priority queues, or weighted fair queuing—determine the transmission order to meet performance goals. The other options describe related ideas that aren’t about buffering and dispatching packets: dropping packets randomly is about loss, DSCP-to-queue mapping deals with classification rather than the dispatch mechanism, and queuing theory for CPU tasks applies to computing systems, not networking. Hence, packet queuing is the best description of buffering and scheduling for transmission.

Packet queuing is the mechanism that buffers and schedules packets for transmission. In network devices, arriving packets are placed into buffers (queues) and held briefly before being sent out, with a scheduling policy deciding which packet goes next. This process controls how bandwidth is shared, keeps latency and jitter under control, and enables quality-of-service by prioritizing certain traffic or fairness among flows. Different scheduling methods—like first-in, first-out, priority queues, or weighted fair queuing—determine the transmission order to meet performance goals. The other options describe related ideas that aren’t about buffering and dispatching packets: dropping packets randomly is about loss, DSCP-to-queue mapping deals with classification rather than the dispatch mechanism, and queuing theory for CPU tasks applies to computing systems, not networking. Hence, packet queuing is the best description of buffering and scheduling for transmission.