Which feature provides the capability for intra-VN traffic filtering and control within the Cisco SO-Access architecture?

Refer to the exhibit. An architect must design an IGP solution for an enterprise customer. The design must support:
- Physical link flaps should have minimal impact.
- Access routers should converge quickly after a link failure.
Which two ISIS solutions should the architect include in the design? (Choose two.)

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.)

Which design consideration must be made when using IPv6 overlay tunnels?

Which OSPF area blocks LSA Type 3, 4 and 5, but allows a default summary route?