After installing a Linux server and activating SSH on it, you try to authenticate, but are rejected due to an “authenticated failure.” You have properly transferred host and public keys, and all of your servers use the same flavor of SSH (Open SSH). What is a likely cause for your failure to connect to this newly configured server?

A.
The version of SSH you are using is incompatible with your Linux system

B.
You must first conduct a Telnet session with the server

C.
You must first disable Telnet and rlogin for SSH to work properly

D.
Your name resolution is incorrectly configured

Explanation:
SSH needs DNS to function properly. Apparently the name resolution is configured incorrectly.
An SSH (Secure Shell Protocol) session is very similar to a Telnet session. Where a SSH session differs from telnet is that your password is encrypted and not sent in the clear. OpenSSH is a FREE version of the SSH protocol suite.
Incorrect Answers:
A: SSH is an open standard. It does not depend on different versions of LINUX.
B: A SSH session is not a Telnet session. They are just similar.
C: The only reason for disabling Telnet is out of security. Telnet uses no encryption and sends the password in plain text.
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