What are two recommended ways ot protecting network device configuration tiles trom outside network security threats7~[Choose two:]-

A.
Allow unrestricted access to the console or VTY ports.

B.
Use a firewall to restrict access from the outside to the network devices.

C.
Always use Telnet to access the device command line because its data is automatically encrypted.

D.
Use SSH or another encrypted and authenticated transport to access device configurations.

E.
Prevent the loss of passwords by disabling password encryption.

Explanation:
This question is to examine the knowledge point related to network security. Internet firewall is a or a group of systems, which will enhance the in-house network security of a mechanism. It decides which in-house seivices can be accessed by the outside, which people from the outside can access what in-house seivices and which outside seivices can be accessed by in-house personnel. Firewall is an Internet customs inspection post. So as to keep the effectiveness of the firewall, all the information in or out of the Internet must flow through the firewall and being checked by it. Only the authorized data is allowed to pass through the firewall and the firewall itself must be free of infiltration. Unfortunately, once the firewall system has been break through or roundabout, it is incapable of providing any protection.