Which node performs the LISP Map-Server and Map-Resolver functions in the Cisco SD-Access network architecture?

Refer to the exhibit. An architect is designing a hierarchical ISIS solution for a customer with these requirements:
* Routers will double In all areas within the next 24 months.
* Link flaps within areas 20 and 30 must not impact the backbone area.
* Traffic originating from A201 and A302 routers must connect to application servers in the backbone.
Which design must the architect select?

Which feature is used to optimize WAN bandwidth of IGMP network traffic among WAN Edge routers in the same VPN?

Refer to the exhibit. The full EIGRP routing table is advertised throughout the network. Currently, users experience data loss when any one link in the network fails. An architect optimizes the network to reduce the impact when a link fails. Which solution should the architect include in the design?

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