In a three-tier hierarchical campus network design, which action is a design best-practice for the core layer?
- provide QoS prioritization services such as marking, queueing, and classification for critical network traffic
- provide redundant Layer 3 point-to-point links between the core devices for more predictable and faster convergence
- provide advanced network security features such as 802.1X, DHCP snooping, VACLs, and port security
- provide redundant aggregation for access layer devices and first-hop redundancy protocols such as VRRP