JN0-102 · Question #188
Which user authentication method is supported by the Junos OS as a last resort alternative?
The correct answer is C. local user database. The local user database on a Junos OS device serves as a last resort authentication method, ensuring access even if external authentication servers are unavailable.
Question
Which user authentication method is supported by the Junos OS as a last resort alternative?
Options
- ATACACS+
- BRADIUS
- Clocal user database
- Denable password
How the community answered
(45 responses)- A2% (1)
- C93% (42)
- D4% (2)
Why each option
The local user database on a Junos OS device serves as a last resort authentication method, ensuring access even if external authentication servers are unavailable.
TACACS+ is an external authentication method and requires an external server to be available, thus it cannot be a last resort alternative for local access.
RADIUS is an external authentication method and relies on an external server, so it cannot function as a last resort if external services are down.
Junos OS typically attempts authentication using configured external servers (like TACACS+ or RADIUS) first, and if those methods fail or are unreachable, it falls back to authenticating against the local user database.
The 'enable password' is a concept primarily associated with Cisco IOS privilege levels and is not a direct authentication method within Junos OS.
Concept tested: Junos OS local user database as a fallback authentication
Source: https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/junos-os-user-authentication-methods.html#junos-os-user-authentication-methods__section-local-authentication-fallback
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