Refer to the exhibit. Which result occurs when a user without a role attempts to log into the fabric?

Access is typically denied only if the authentication process itself fails or if the user is explicitly denied access through a role mapping.

The 'local domain' refers to local authentication on the APIC, not a role that is assigned after authentication when no explicit role is found.

Cisco ACI's authentication and authorization model assigns a default role to users who successfully authenticate but do not have an explicitly configured role mapping. This default role typically provides very limited, often read-only, access to prevent unauthorized configuration changes while allowing some visibility.

Authentication by using TACACS is a method of verifying user credentials, which occurs before role assignment; the question asks what happens after authentication if no role is found.