Exam JN0-104 topic 1 question 39 discussion

BC are correct!! B: "Junos OS login classes define the access privileges,..." C: "Junos OS includes predefined login classes, which are listed in Table 1. You cannot modify the predefined login classes. ..." https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/junos-os-login-class.html

Ref: User Access Privileges | Junos OS | Juniper Networks "User Access and Authentication Administration Guide for Junos OS ... Access Privilege Levels Overview ... For each login class, you can also explicitly allow or deny the use of operational mode and configuration mode commands and statement hierarchies that would otherwise be allowed or denied by a privilege level specified in the permissions statement. ..." Ref: Login Classes Overview | Junos OS | Juniper Networks "User Access and Authentication Administration Guide for Junos OS ... Login Classes Overview ... Junos OS login classes define the access privileges, permissions for using CLI commands and statements, and session idle time for the users assigned to that class. ..."

B and C in my opinion. There is a pre-defined login class on Junos devices by default https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/junos-os-login-class.html