Juniper JN0-664 Exam Practice Questions (P. 4)

GPT-4o - Answer

In this scenario, when both a behavior aggregate (BA) classifier and a multifield (MF) classifier are configured on an interface, the BA classifier is processed first. This processing order is crucial because it sets the initial forwarding class and loss priority before the MF classifier potentially refines the classification further based on multiple field criteria. This sequential processing ensures that broad classification via BA occurs before more granular policy decisions via MF.

GPT-4o - Answer

Indeed, in BGP signaled Layer 2 VPNs, the default behavior on a PE device regarding site IDs is that they are assigned automatically in the sequence that interfaces are added. This orderly assignment based on configuration order facilitates straightforward tracking and management of multiple sites within a single Virtual Forwarding Instance (VFI). Thereby, this approach efficiently eliminates the need for manual configuration of each site ID unless bespoke settings necessitate specific IDs.

GPT-4o - Answer

For the scenario posed in the question, where the requirement is to use LDP for signaling, support Layer 2 connectivity without BGP, and must be scalable to support multiple VPN connections over a single MPLS LSP, the most suitable solution is indeed an LDP Layer 2 circuit. This choice optimally addresses the customer's preference for maintaining all routing within their private network, while LDP handles MPLS labeling effectively without the need for BGP, which the customer wants to avoid. Additionally, LDP Layer 2 circuits are inherently designed to support Layer 2 connectivity over MPLS, making them the ideal choice for scalable, multiple VPN implementations.