To transmit a single message to a select group of recipients. A simple example of multicasting is sending an e-mail message to a mailing list. Teleconferencing and videoconferencing also use multicasting, but require more robust protocols and networks.
Standards are being developed to support multicasting over a TCP/IP network such as the Internet. These standards, IP Multicast and Mbone, will allow users to easily join multicast groups.
Note that multicasting refers to sending a message to a select group whereas broadcasting refers to sending a message to everyone connected to a network.
The terms multicast and narrowcast are often used interchangeably, although narrowcast usually refers to the business model whereas multicast refers to the actual technology used to transmit the data.
Compare with unicast and anycast.
- Nyquist's Law
Also called Nyquist’s Theorem. Before sound as acoustic energy can be manipulated on a computer, it must first be converted to electrical energy (using a transducer such as a microphone) and then transformed through an analog-to-digital converter into a digital representation. This is all accomplished by sampling the continuous input waveform a certain number of […]
Abbreviation for “newbie”. Newbie is commonly used in newsgroups/a>, chat rooms, instant messaging, text messaging, SMS, e-mail and other real time text-based communications.
Software or programming that routinely issues a pop-up window or other form of visual interface asking the user to register a product, purchase an application or take another form of action. Nagware is typically used in reference to shareware, which typically offers a free-trial period of use for the application and then requests that the […]
A sequence of one or more characters that uniquely identifies a file, variable, account, or other entity. Computer systems impose various rules about naming objects. For example, there is often a limit to the number of characters you can use, and not all characters are allowed. Names are sometimes called identifiers.
- name scope