Which three types of traffic is the router service plane responsible for processing? (Choose three.)
- MPLS VPN
- Telnet
- BGP
- QoS
- ICMP
- GRE
Explanation: The services plane is responsible for a special category of traffic known as "high-touch" packets. These are user-generated data plane packets that, while being forwarded to other end-station devices, require processing beyond standard destination IP address-based forwarding. According to the sources, specific examples of services plane functions include:
- Generic Routing Encapsulation (GRE)
- Quality of Service (QoS)
- Multiprotocol Label Switching (MPLS) VPNs
- SSL/IPsec encryption and decryption
Other types of traffic mentioned in your list belong to different planes: BGP is a control plane protocol used for network creation and operation; Telnet is a management plane protocol used to manage the device; and ICMP is generally treated as a "receive" or "exception" packet that must be handled by the device's route processor.
Related exam: Modules 14 – 16: Checkpoint Exam: Network Security Answers (CCNP ENCOR v9)
