The DDS (Doctor of Dental Surgery) and DMD (Doctor of Dental Medicine) are the same degrees. At least one of these degrees is required to become a general dentist. The majority of dental schools award the DDS degree, but some award a DMD degree. The level of education and the degrees are the same.
An intranet is a network based on TCP/IP protocols (an internet) belonging to an organization, usually a corporation, accessible only by the organization's members, employees, or others with authorization.
An intranet is a company's secure private local network that is not meant to be accessed by anyone outside the company. An extranet is an intranet that is accessible only to certain designated individuals outside the company, but it is not a public network.