What happens to the quality of services not prioritized when QoS is implemented?

When Quality of Service (QoS) is implemented within a network, it involves the allocation of network resources and prioritization of certain types of traffic. This prioritization ensures that more critical or time-sensitive data, such as voice and video communications, receive the necessary bandwidth and low-latency treatment to function optimally.

Under QoS policies, services that are not prioritized may experience a reduction in performance, specifically in parameters such as delay, jitter, and overall throughput. These services, which typically include less critical applications such as file transfers or standard web browsing, are often relegated to a lower priority tier, which means they might experience congestion, longer delays, or packet loss during periods of high demand. Therefore, the resources they rely upon are diminished due to the focus on maintaining the quality of the prioritized services.

As such, when QoS is implemented, the overall experience for non-prioritized services can indeed deteriorate due to the prioritization of resources towards more critical applications. This dynamic illustrates the trade-offs inherent in managing network performance and resource allocation in environments with varying service requirements.