HWTACACS is a centralized information exchange protocol based on the client/server structure. It
uses UDP for transmission and performs authentication, authorization, and accounting for users
accessing the Internet through Point-to-Point Protocol (PPP) or Virtual Private Dial-up Network
(VPDN) and administrative users logging in to devices.
*In the data filtering profile on the firewall, keyword group "Keyword" is invoked in the upload direction of
HTTP applications, the action is block, and the keyword group is invoked in the security policy. Given this, if
the regular expression "b.d" is configured in the keyword group "Keyword,” which of the following texts can
be posted by internal employees on the forum?