Which protocol enables segment routing for traffic engineering in modern networks?
- OSPF
- BGP
- SR-MPLS / SRv6
- RIP
Answer: SR-MPLS / SRv6
Segment Routing (SR-MPLS, SRv6) encodes path instructions in packet headers, enabling flexible traffic engineering without per-flow state. Critical for scalable, programmable networks. Important for advanced networking questions.