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Which feature minimizes TLOC connections and reduces strain on the vSmart controller in an SD-WAN architecture?

Refer to the exhibit. Due to budget constraints, a customer decided to purchase WAN routers with one LAN and one WAN interface per device. There is a requirement to connect the three sites to ensure high availability without buying additional WAN links. Which design deployment must the customer choose?
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)

Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
In a Cisco SD-Access fabric, switch node Is equivalent to an access layer switch In a traditional three-tier campus network design?
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