Because of their notable absence in the topics covered by the Remote Access examination, we only
briefly cover some of the newer queuing management technologies in this section. Queue control
has become a more important issue in remote access networking with the proliferation of voice
services and other real-time protocols. As these protocols suffer from congestion and low bandwidth,
they are strong candidates for quality of service (QoS), of which queuing is a part.
Remember that queuing is intended to manage the transmission of packets held in the
router’s buffer. Unlike voice, data networks buffer packets during periods of congestion.
Although we could discuss a wide number of queuing options, three key methods are gaining
prominence in the market: low latency queuing, class-based weighted fair queuing, and committed
access rate.