Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 133

In a three-tier hierarchical campus network design, which action is a design best-practice for the core layer?

Answer options

• A. provide QoS prioritization services such as marking, queueing, and classification for critical network traffic
• B. provide redundant Layer 3 point-to-point links between the core devices for more predictable and faster convergence
• C. provide advanced network security features such as 802.1X, DHCP snooping, VACLs, and port security
• D. provide redundant aggregation for access layer devices and first-hop redundancy protocols such as VRRP

Correct answer: B

Explanation

Option B is correct because providing redundant Layer 3 connections between core devices enhances network reliability and speeds up convergence during failures. Options A, C, and D focus on functions that are not primary responsibilities of the core layer; they pertain more to the distribution and access layers.