Which two statements describe source trees in a multicast environment? (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?

A large chain of stores currently uses MPLS-based T1 lines to connect their stores to their data center. An architect must design a new solution to improve availability and reduce costs while keeping these considerations in mind:
- The company uses multicast to deliver training to the stores.
- The company uses dynamic routing protocols and has implemented QoS.
- To simplify deployments, tunnels should be created dynamically on the hub when additional stores open.
Which solution should be included in this design?

Which two statements about VRRP object tracking are true? (Choose two)

Refer to the exhibit.

Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?