What message does the TACACS+ daemon send during the AAA authentication process
to request additional authentication information?

A.
ACCEPT

B.
CONTINUE

C.
REJECT

D.
ERROR

E.
REPLY

Explanation:
TACACS+ defines 7 type of packets (or “messages”):
Authentication START (It describes the type of authentication to be performed, and may
contain the username and some authentication data. The START packet is only ever sent
as the first message in a TACACS+ authentication session.).
Authentication REPLY (It indicates whether the authentication is finished, or whether it
should continue. If the REPLY indicates that authentication should continue, then it will
also indicate what new information is requested.).
Authentication CONTINUE (It is sent from the NAS to the server following the receipt of
a REPLY packet and possibly contains requested information.).
Authorization REQUEST (It contains a fixed set of fields that describe the authenticity of
the user or process, and a variable set of arguments that describes the services and options for which authorization is requested.).
Authorization RESPONSE (It contains a variable set of response arguments (attributevalue pairs) which can restrict or modify the client actions.).
Accounting REQUEST (It conveys information used to provide accounting for a service
provided to a user.).
Accounting REPLY (It is used to indicate that the accounting function on the server has
completed and securely
committed the record.).