JNCIE-ENT: Juniper Networks Certified Expert – Enterprise Routing and Switching — Question 3

In a network design using the traditional tiered structure, which two tiers connect to untrusted domains? (Choose two.)

Answer options

• A. access
• B. WAN edge
• C. core
• D. aggregation

Correct answer: B, D

Explanation

The WAN edge and aggregation tiers are designed to connect to untrusted external networks, such as the internet. The access tier primarily serves end devices and does not directly interface with untrusted domains, while the core tier focuses on high-speed data transfer within the trusted internal structure.