I agree entirely. Organizational networks need to provide a range of services that meet certain
threshold of quality standards which include predictable and measurable services as applications — like video,
voice, and delay-sensitive data — to traverse a network. Companies utilize QoS for a number of reasons such as
meeting the traffic requirements of sensitive applications, such as real-time voice and video, and to prevent the
degradation of quality caused by packet loss, delay and jitter.
I would also go with the selected tradeoff. As long as critical apps are up running as expected, further
provisioning of the network may not hurt the business. Several tools and approaches, including jitter buffer and
traffic shaping, can help organizations achieve QoS. To ensure a specific degree of network performance,
several companies incorporate QoS in their service-level agreement (SLA) with their network service provider.
The terms Class of Service (CoS) and Quality of Service (QoS) are frequently used interchangeably. They are,
nevertheless, slightly different. CoS technology does not explicitly promise a level of service in terms of
bandwidth, and it addresses traffic control in a more granular manner. In many circumstances, though, whether
someone uses the term CoS or QoS, they are most likely referring to the same thing.