What is the purpose of the restricted VLAN (authentication failed VLAN) on a Cisco Catalyst
switch?

A.
It provides configurable guest access to devices that have a supplicant but lack local
credentials.

B.
It provides configurable guest access to nonsupplicant devices that have local
credentials.

C.
It provides configurable guest access to devices that have a supplicant when the
authenticator is down or unreachable.

D.
It provides configurable guest access to nonsupplicant devices that lack local credentials.

E.
It provides configurable guest access to devices that have a supplicant when the
authentication server is down or unreachable.