What is the order of operations for software upgrades of Cisco SD-WAN nodes'?

Which OSPF command makes the WAN Edge router a less preferred exit from a site with a dual WAN Edge design?
A)

B)

C)

D)

Refer to the exhibit.

A network engineer must configure a WLAN on a Cisco IOS-XE controller to support corporate devices (using VLAN 30) and BYOD (using VLAN 40) on the same secure SSID. The security team has built an ISE deployment to be used for VLAN assignment and to restrict access based on policy and posture compliance.
Given the existing WLAN configuration, which configuration change must be made?

Refer to the exhibit. Which configuration stops Netconf CLI logging on WAN Edge devices during migration?

Which type of routeadvertisement of OMP can beverified?