What to Configure After Factory Defaults | JN0-102 Exam

A

When you load factory defaults on a Juniper Networks device, the device returns to the default configuration settings. However, there are certain configuration parameters that need to be configured before you can commit the new configuration to the device.

Out of the options given in the question, the two essential configuration parameters that need to be set before the first commit after loading factory defaults are root authentication and host name.

A. Root Authentication:

Root authentication refers to the authentication of the root user account, which is the superuser account on the Junos device. Before committing any configuration changes, you need to configure the root authentication settings, which include a username and password. This ensures that only authorized personnel can access the device's configuration settings and make changes.

B. Host Name:

The hostname is the name that identifies the device on the network. The hostname is a crucial configuration parameter that must be configured before the first commit after loading factory defaults. A hostname should be unique and should reflect the device's purpose and location.

C. Default Gateway:

While the default gateway is an important parameter, it is not mandatory to configure it before the first commit after loading factory defaults. The default gateway is the IP address of the device that provides access to the network outside of the local network. If you do not set a default gateway, the device can still communicate within its local network, but it will not be able to access resources outside the network.

D. Management Services:

Like the default gateway, management services such as SSH and SNMP are not mandatory to configure before the first commit after loading factory defaults. However, it is good practice to configure these services as per your organization's security policies.

In conclusion, before committing any changes to the device's configuration after loading factory defaults, you must configure root authentication and host name. While configuring the default gateway and management services are essential, they are not mandatory before the first commit.