Which statement describes the QoS classification and marking tools?
- Classification is performed after traffic is marked.
- Classification should be done as close to the destination service as possible.
- Marking involves adding a value to a packet header.
- Marking involves identification of the QoS policy that should be applied to specific packets.
Explanation: Marking means adding a value to the packet header. Devices receiving the packet look at this field to see whether it matches a defined policy. Marking should be done as close to the source device as possible to establish the trust boundary.
Related exam: 9.6.2 Module Quiz - QoS Concepts
Related exam: CCNA 4 v6 Chapter 6: Check Your Understanding
