The Office1 network link is brought offline for emergency maintenance.
Users in Office2 and Office3 report that they cannot connect to the wireless network.
You need to recommend changes to ensure that users in all offices can connect to the wireless network if a WAN link fails.
What should you recommend?
A.
that redundant DHCP scopes be created
B.
that additional RADIUS servers be deployed
C.
that universal group caching be implemented
D.
that additional default gateways be configured