An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions:
* The routers will not learn any prefix with a subnet mask greater than /24.
* The routers will determine the routes to include in the routing table based on the length of the mask alone.
* The routers will make this selection regardless of the service provider configuration.
Which solution should the engineer include in the design?

A company must automate a set of complex changes aligned with DR testing in the network.
These changes are specific, and the DR playbook will be adjusted in the future. The playbook has diverse routing and switching assets in scope as well as multiple vendor and hardware platforms.
A developer will create a thin, web front-end microservice and integrate with an Open daylight controller to push changes to the network. Which YANG model should be used?

An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?

An engineer uses Postman and YANG to configure a router with:
- OSPF process ID 100
- network 10.10.10.0/28 enabled for Area 0
Which get-config replay verifies that the model set was designed correctly?

An engineer uses Postman and YANG to configure a router with:
- OSPF process ID 400
- network 192.168.128.128/25 enabled for Area 0
Which get-config reply verifies that the model set was designed correctly?