Commercial speech, however, is less protected by the First Amendment than political speech, and is therefore subject to greater regulation. The Free Press Clause protects publication of information and opinions, and applies to a wide variety of media.
In computer networking, multicast (one-to-many or many-to-many distribution) is group communication where information is addressed to a group of destination computers simultaneously.
In telecommunications and computer networks, multiplexing (sometimes contracted to muxing) is a method by which multiple analog message signals or digital data streams are combined into one signal over a shared medium.ultiplexing is provided by the Physical Layer of the OSI model, while multiple access also involves a media access control protocol, which is part of the Data Link Layer.