Ensuring the SSL certificate covers all domain names and subdomains used by Tableau Server When implementing SSL encryption in Tableau Server, it is important to ensure that the SSL certificate covers all domain names and subdomains used by the server. This ensures that SSL protection is applied consistently across the entire server environment, preventing security gaps that might occur if some parts of the domain are not covered. Option A is incorrect because while updating Tableau Server is important for overall security and functionality, it is not specific to maintaining the effectiveness of SSL implementation. Option C is incorrect as increasing bandwidth capacity is generally not required solely due to SSL traffic. Option D is incorrect because configuring user accounts to require SSL for authentication, while a good security practice, is not directly related to the effectiveness of the SSL certificate coverage on the server.