Refer to the exhibit. An engineer is designing an OSPF solution with these requirements:
- NMS server will manage R5 and R6.
- Upon failure of R1, all NMS traffic should be routed through R4.
- Upon failure of the link between R5 and R6, all traffic destined for
10.6.6.6 should be routed through R4.
Which solution must the engineer choose?

A company is using OSPF between its HQ location and a branch office. HQ is assigned area 0 and the branch office is assigned area 1.
The company purchases a second branch office, but due to circuit delays to HQ, it decides to connect the new branch office to the creating branch office as a temporary measure.
The new branch office is assigned area 2.
Which OSPF configuration enables all three locations to exchange routes?

A network engineer must segregate three interconnected campus networks using IS-IS routing.
A two-layer hierarchy must be used to support large routing domains and to avoid more specific routes from each campus network being advertised to other campus network routers automatically.
Which two actions does the engineer take to accomplish this segregation? (Choose two.)

Refer to the exhibit. A customer is planning to onboard three new VPN partner connections in the data center. The new subnets must not overlap with the existing data center network, and the subnet size must not be bigger than necessary. The customer dedicated 10.1.8.0/21 for this design. How must the subnets be divided to meet these requirements?

When differentiating between IETF, OpenConfig, and Cisco native YANG models, how does the use of containers differ?