What is the role of community strings in SNMP operations?

Refer to the exhibit. Company A wants to use a RADIUS server to service all user and device authentication attempts with a more secure and granular authentication approach. Not all client devices support dot1x authentication. Which two configuration changes must be made to accomplish the task? (Choose two.)

Refer to the exhibit. Drag and drop the learned prefixes from the left onto the preferred route methods from which they were learned on the right.

Refer to the exhibit. All routers in the network are configured conrectly, and the expected routes are being exchanged among the routers. Which set of routes are leamed from neighbors and installed on router 2?

What are two functions of DHCP servers? (Choose two.)