In communications, a simplex communication link is one way only, and a duplex link goes in both directions. An example of a simplex link is a satellite beaming a signal to a receiver dish where the communication only goes in one direction, from the origin to a receiver. An example of a duplex link is a telephone.Know More
Most duplex communication links have two links: one to transmit and one to receive. A half duplex link can both receive and transmit, but it cannot do both at the same time. An example of a half duplex link is a walkie-talkie. The person talking on a walkie-talkie cannot receive while talking.
The same terminology can be used in other fields. An electrical circuit with one wire set up such that the current can only flow one way is a simplex link. Simplex fiber-optic cables have only one fiber-optic relay inside them, and duplex fiber-optic cables have two fiber-optic relays inside them.
The same terms have been borrowed for use in printing and scanning, but the terms are used somewhat incorrectly. Printers may offer the option of duplex printing, namely printing on both sides of the paper, or simplex printing, on only one side of the paper. Duplex scanners scan both sides of the paper, and simplex scanners scan only one side.Learn more about Internet & Networking
The difference between narrowband and broadband is that narrowband communications use a smaller bandwidth range than wideband communications. Additionally, in terms of access to the Internet, narrowband connections provide data at a slower rate, while broadband connections offer a higher data rate. Narrowband and broadband, or wideband, are terms which refer to the amount of bandwidth used to transfer information.Full Answer >
The Internet was created essentially to enable and facilitate communications among connected systems at the local, state, national and international levels. The concept for the Internet, also called the World Wide Web, was developed in the early 1970s by the United States Defense Advanced Research Projects Agency, or DARPA. The agency launched a research campaign to find effective ways to link computers to facilitate the exchange of information.Full Answer >
The main purpose of the Internet is to provide global access to data and communications. Use of the Internet and networking is essential for advancing research in science, medicine, engineering and design as well as in maintaining global defense and surveillance. With better access to microcomputing, the Internet also fosters a global workforce and users provides access to wider cultural contexts.Full Answer >
A Simple Network Management Protocol port is a network communications channel. Administrative computers use SNMP to monitor equipment attached to a network. In an SNMP setup, a software agent constantly reports information about the network via SNMP to the administrative computer.Full Answer >