Why is the rlogin command dangerous to network security?

A.
Remote logins are a security threat regardless of the protocol and should be avoided

B.
There is no way to prevent the user who successfully uses rlogin from becoming root

C.
The rlogin command has a long history of buffer overflows that has not been corrected

D.
If one system that has extensive rlogin privileges to other systems is compromised, then a hacker can spread throughout the entire network

Explanation:
Remote logins can gain access to a server without a password, and is a major security risk. It is easily violated and transmits data in cleartext.
Incorrect Answers:
B: The remote user can be denied root access via security controls.
C: The rlogin is a very old and mature command, and has not experienced buffer overflows.
D: Any system open to rlogin can be attacked by anyone. Once it is open, you can’t restrict who comes in via the command.