Answer:
The answer is "Use SCP to back up the router configuration to a remote location".
Explanation:
In the SPC, it is the Secure Copy Protocol that allows information to be stored and securely transmitted. Its SCP doesn't encrypt its digital information by itself; it corresponds to both the Security module which provides authentication or security. It allows the safe transfer of personal documents from either a host machine to a remote server. Its transference protocol "FTP" is quite close, but it adds security and authentication.
I guess depends on the language but for both java and C++ answer 3 is correct.
