You want to log in to the router and make a configuration change.
After logging in as the root user, what is the next command you must enter?
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A. B. C. D.D
After logging in as the root user, the next command you must enter to make a configuration change depends on your desired action.
Option A: "enable" command is used in Cisco devices to switch to privileged mode, but in Junos, this command is not needed. The root user in Junos already has all privileges and access to all commands.
Option B: "configure" command allows you to enter the configuration mode to make changes to the router's configuration. This is the most common next step after logging in as the root user, as you will typically want to make configuration changes on the router.
Option C: "edit" command is used within configuration mode to move to a specific section of the configuration, such as interfaces or protocols. You would not typically use this command immediately after logging in as the root user.
Option D: "cli" command takes you out of configuration mode and back to the Junos command-line interface. You would not typically use this command immediately after logging in as the root user, as you would typically want to make configuration changes after logging in.
So the correct answer to the question is B. "configure" command, as it is the next step to enter configuration mode and make changes to the router's configuration.