What do DSCP tags describe in network packages?

DSCP tags, or Differentiated Services Code Point tags, are used in network packets primarily to indicate the priority level of the packets as they traverse through a network. This tagging is part of the DiffServ architecture, which is designed to ensure that different types of traffic can be handled with appropriate service levels, thereby improving overall network efficiency and performance.

By assigning specific DSCP values to packets, network devices such as routers and switches can make intelligent decisions on how to route or process those packets based on their priority. This mechanism is particularly beneficial for real-time services like audio and video streaming, where timely delivery is critical.

While other options might relate to important features of packets in a network, such as security or type of data, the primary role of DSCP tags focuses on establishing priority levels, allowing for effective traffic management and Quality of Service (QoS) across the network.