Which single element must be configured before a commit command will succeed?

You loaded the factory-default configuration on your Junos device.

Which single element must be configured before a commit command will succeed?
A . An IPv4 address must be configured on the fxpO or emO interface.
B . An IPv4 default route must be configured.
C . A hostname must be configured.
D . A root password must be configured.

Answer: D

Explanation:

Ref: Root Password | Junos OS | Juniper Networks

“Root Password

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When the device is powered on for the first time, it is ready to be configured. Initially, you log in as the user root with no password. You must configure a plain-text password for the root-level user (whose username is root) the first time you modify and commit the configuration.

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