What are the two requirements for plug-and-play provisioning on Cisco IOS XE SD-WAN devices? (Choose two.)
The gateway router for the WAN Edge device must be able to reach devicehelper.cisco.com.
The gateway router for the WAN Edge device must be able to reach public DNS servers.
The gateway router for the WAN Edge device must be able to reach ztp.viptela.com.
Devices at branch offices must be able to reach the Cisco SD-WAN vSmart controller at the headquarters site.
The WAN Edge device must have a valid certificate.
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