Refer to the exhibit. An engineer is planning an IPv4 to IPv6 migration solution for a customer. The routers in the network can support IPv4 and IPv6, except for the DWDM routers. The DWDM routers provide a Layer 2 link in which the routers peer directly with each other across a DWDM circuit. The circuit also provides connectivity between the mail servers. Which IPv6 migration technique must the engineer deploy?

What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)

Refer to the exhibit.

The failover time of ISP-2 is significantly shorter than ISP-1 when an interface on the ISP router toward the campus network fails. Which solution minimizes the downtime to the sub-second?

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?

An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)