What does QoS prioritize in network traffic?

Quality of Service (QoS) is a crucial mechanism in networking that focuses on managing network traffic and ensuring the performance of specific applications and services. The primary goal of QoS is to prioritize certain types of data traffic to ensure that critical applications have the necessary resources to function effectively, particularly concerning latency-sensitive applications such as VoIP, video conferencing, and online gaming.

When considering low latency delivery, QoS utilizes various techniques, such as traffic shaping, queue management, and resource allocation, to minimize delays and ensure timely data packet delivery. This emphasis on maintaining low latency is vital for applications that cannot tolerate delays, making this option the correct one as it encapsulates the essence of what QoS aims to achieve.

In contrast, while security measures and data integrity are important aspects of networking, they do not directly relate to the primary role of QoS, which is focused more on the timely and efficient delivery of traffic rather than safeguarding or ensuring the accuracy of the data. Additionally, saying QoS prioritizes "all types of traffic" is misleading, as QoS is about managing and prioritizing specific types of traffic based on their importance and resource requirements, rather than treating all traffic equally.