Radius, Remote Authentication Dial In User Service is a networking concept which is used to provide access to users to services which require logging in, generally with a username and password. This protocol uses servers to store information in the form of a list of user names or passwords. So, when a user wants to [...]

S/PDIF is a type of data link layer and physical layer for the transfer of digital audio signals between multiple devices or stereo components. S/PDIF is an acronym for Sony / Philips Digital Interconnect Format or Sony Philips Digital Interface. As described in the acronym, the S/PDIF format was developed during joint operations between Sony [...]

Hyper Terminal is communications software used to connect to other computers over modems, RS-232 serial connections, or telnet. In order to use Hyper Terminal, the user will have to know details about the computer they wish to connect to, such as the number to dial or the IP address. HyperTerminal can be accessed by: * [...]

UMTS (Universal Mobile Telephone Service) is a third generation (3G) cellular technology, which provides data speeds up to 2 Mbps making portable videophones a reality. UMTS was developed and standardized by ETSI (European Telecommunications Standard Institute) within the ITU’s IMT-200 framework. The technology is optimized to allow state of the art, very high-speed multimedia services [...]

The Address Resolution Protocol is designed to ease communication in TCP/IP networks through accelerated methods of finding host hardware addresses when the network layer is known. When a network layer has been resolved to a data link layer address, the link between the two is put in a table called an ARP cache where matched [...]

By engaging small business decision makers in discussions about their IT networking needs, you can highlight how automating services like faxing will save your prospect’s or client’s company on manual labor, which indirectly translates into substantial salary savings over the course of the year. At the very least, network-based faxing will free up staff to [...]

To earn your CCNA or CCNP certification, you’ve got to understand the basics of trunking. This isn’t just a CCNA topic – you must have an advanced understanding of trunking and etherchannels to pass the BCMSN exam and earn your CCNP as well. Before we address those advanced topics, though, you need to master the [...]

Today it is almost inconceivable for a business not to have computers, whether it is a construction company or a high technology firm. When a business has more than one computer, they are almost always connected together in a local area network. These networks may be more or less advanced and therefore more or less [...]

Owned by EchoStar Communications Corporation, the Dish network was launched in March, 1996. Dish network is the fastest-growing digital satellite television service provider in the United States, with a subscriber base of 12 million. They provide various types programming packages, delivering 250 channels with free equipment and installation parts. Dish network offers 110 foreign-language channels [...]