What is a primary goal of Quality of Service (QoS) in networking?

The primary goal of Quality of Service (QoS) in networking is to control bandwidth allocation for different services. QoS involves managing network resources to ensure that certain traffic types receive the service quality they require. This is crucial in environments where multiple services share bandwidth, as it allows for prioritization of critical applications—such as voice over IP or video conferencing—while managing less critical traffic more flexibly.

By controlling bandwidth allocation, QoS can help maintain a consistent and reliable performance for essential applications, even during peak usage times. This capacity to prioritize and allocate bandwidth ensures that the most important data flows are not negatively impacted by congestion or competing traffic.

The other options, while related to networking, do not encapsulate the central aim of QoS as effectively. For example, while reducing latency is important and can be a byproduct of effective QoS strategies, it is not the primary focus. Enhancing encryption pertains more to data security rather than service quality, and increasing the number of routers does not directly relate to managing service quality for users.