Confirm if the website 'agrar.hu-berlin.de' is accessible. If it is, navigate to the homepage and identify the main sections or navigation links available. If it remains inaccessible, report the error again.
Attempt to navigate to 'http://agrar.hu-berlin.de/'. If navigation is successful, identify and list the primary navigation links or main sections visible on the homepage. If navigation fails with a 'net::ERR_NAME_NOT_RESOLVED' error, report the error.
The agent successfully navigates to 'http://agrar.hu-berlin.de/' and lists key navigation links (e.g., 'Study', 'Research', 'Faculty', 'News'). Alternatively, the agent reports that the website remains inaccessible due to a 'net::ERR_NAME_NOT_RESOLVED' error.