Which security feature can protect DMVPN tunnels?

Drag and drop the OSPF adjacency states from the left onto the correct descriptions on the right.

Refer to the exhibit.

An IT staff member comes into the office during normal office hours and cannot access devices through SSH Which action should be taken to resolve this issue?

Refer to the exhibit.

R2 is a route reflector, and R1 and R3 are route reflector clients. The route reflector learns the route to 172.16.25.0/24 from R1, but it does not advertise to R3. What is the reason the route is not advertised?

Refer to the exhibit.

R1 is being monitored using SNMP and monitoring devices are getting only partial information. What action should be taken to resolve this issue?