Which two IS-IS parameters must match before two Level 2 peers can form an adjacency? (Choose two.)

A router is configured to perform MPLS LDP graceful restart.
Which three steps are included when the RP sends an LDP initialization to a neighbor to establish an LDP session? (Choose three)

Refer to the exhibit:

A network administrator wants to enhance the security for SNMP for this configuration.
Which action can the network administrator implement?

The network-engineering team of a service provider is integrating several recently acquired networks into a more scalable common Unified MPLS architecture. The new network architecture will support end-to-end VPNv4 and VPNv6 services with these requirements:
* The IGP of the core layer is IS-IS In Area 0.
* The IGP of the aggregation layers is OSPF in Area 0.
* The LDP protocol Is used to distribute label bindings within each IGP domain.
Which task must the network engineer perform when implementing this new architecture?

Refer to the exhibit:

Which effect of this configuration is true?