Juniper JN0-649 Exam Practice Questions (P. 2)

GPT-4o - Answer

Absolutely spot on! The range 232.0.0.0/8 is indeed designated for Source-Specific Multicast (SSM), primarily utilized in applications where clarity and source specificity are critical, like internet video streaming. The protocol works best within this range, so it’s a sweet spot for those types of multicast deployments.

GPT-4o - Answer

The correct answer is B, C, and E — revision level, configuration name, and region name. These parameters must be identical across all switches within the same MSTP region to ensure a unified operation of MSTP. The region name uniquely identifies the MSTP region, the configuration name facilitates consistency in settings across all switches, and the revision level aids in tracking updates or changes within the MSTP region. Incorrect parameters could lead to configuration inconsistencies causing potential network loops or segmentation.

GPT-4o - Answer

Junos OS indeed supports both underlay and ingress replication for BUM traffic in EVPN-VXLAN environments. Underlay replication leverages the physical network while ingress replication uses source-based replication over the IP network. It's vital to understand Junos OS capabilities in this context for effective deployment and troubleshooting on QFX devices. While there is a debate on the nature of Type 1 routes regarding the single-active flag, the focus on BUM traffic handling correctly reflects the support for multiple replication strategies in Junos.

GPT-4o - Answer

Oh right, so when getting your network to not overshare its BGP VPN routes with peers that can’t handle them, you definitely gotta tweak your local settings rather than hoping the remote side will sort it out. Directly controlling your BGP exports by rejecting VPN routes through an export policy is a sharp move. Also, by using the apply-vpn-export feature, your local BGP peer smartly filters out these routes for setups that don't support VPN NLRI. This way you keep things clean and prevent unnecessary routing info from reaching incapable devices—nice and tidy!

GPT-4o - Answer

Correct, a totally stubby area is designed to contain only default routes and intra-area routes in the form of Type 1 and 2 LSAs. This area type effectively filters out all routes except those generated within the area itself and a default route provided by the area border router, simplifying the routing table and decreasing the routing overhead within the area. This setup ensures minimal route advertisements while maintaining necessary connectivity for the area's devices.