Remote Authentication Dial In User Service $($RADIUS$)$ is a client$/$server protocol that provides authentication and authorization for remote users. Which of the following is the first step in how the RADIUS protocol works?

Question $7$ options:

A$)$

The user provides authentication credentials such as a user ID and password to a RADIUS client.

B$)$

The RADIUS server sends an access$-$challenge response to the user.

C$)$

The RADIUS client creates an access request containing the user's ID and password.

D$)$

The user sends an access request to the RADIUS server.