【单选题】Which statement describes the Authentication Proxy feature?()
A.
All traffic is permitted from the inbound to the outbound interface upon successful authentication of the user.
B.
A specific access profile is retrieved from a TACACS+ or RADIUS server and applied to an IOS Firewall based on user provided credentials.
C.
Prior to responding to a proxy ARP,the router will prompt the user for a login and password which are authenticated based on the configured AAA policy.
D.
The proxy server capabilities of the IOS Firewall are enabled upon successful authentication of the user.
【简答题】Column A 1) ______ the theory of language underlying the communicative approach 2) ______ the theory of learning underlying the communicative approach 3) ______ one of the objectives of the communicat...