Which of the following functions is used to prioritize network traffic based on the type of traffic?

Quality of Service (QoS) is a set of technologies that manage network resources to minimize packet loss, latency, and jitter for critical applications by prioritizing specific types of traffic, such as voice or video, over less time-sensitive data.

A VPN (Virtual Private Network) creates a secure, encrypted tunnel over a public network, primarily for confidentiality and integrity, not for prioritizing traffic based on type.

A CDN (Content Delivery Network) distributes content geographically to improve delivery speed and availability, but it does not inherently prioritize traffic types within a network.

TTL (Time To Live) is a mechanism that limits the lifespan of a packet on a network to prevent it from looping indefinitely, not for prioritizing traffic.