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Novell Networks
Published in Paul W. Ross, The Handbook of Software for Engineers and Scientists, 2018
At the most basic level, a network is a means by which both computer peripherals and information may be shared. Computer networks fall into one of two categories, Local Area Networks (LANs) and Wide Area Networks (WANs). LANs and WANs are differentiated from one another by the fact that a LAN serves a specific, limited geographic area, such as an individual department or organization. By contrast, WANs are large networks comprised of smaller LANs and are not limited by geography. The primary constituents of a LAN are PCs and other peripherals such as printers, modems, and gateways to other systems such as minis and mainframes. These components are connected (usually physically) by a cabling system such as fiber optic cable, coaxial cable, twisted-pair cable, or a host of other means. The cable acts as a data path between different computers (or peripherals) on the network. Finally, there is a Network Interface Card (NIC) that provides the physical connection between the computer (or other components) and the cable system.
Digital Audio and Computer Networks
Published in Andy Bailey, Network Technology for Digital Audio, 2013
A LAN is generally installed within a single building or campus, whereas a WAN extends the concept to cover connections between towns, cities, and countries. A MAN is a newer term that can have two possible variations on meaning. The first is a network installed internally to an organization, where the parts of the organization remain within a municipal area. The second interpretation is a high capacity general network, offered as a service within a town or city, probably connecting to the Internet. Each of these types of network needs to consider different design aspects.
Communications Technologies
Published in Sharon Yull, BTEC National for IT Practitioners: Core Units, 2009
A bridge is used to connect two separate LANs or two segments of the same LAN using the same protocols. A bridge is used for three main reasons: to overcome physical limitationsto manage traffic and securityto allow conversion between technologies.
Secure control of cyber physical systems subject to stochastic distributed DoS and deception attacks
Published in International Journal of Systems Science, 2020
Magdi S. Mahmoud, Mutaz M. Hamdan, Uthman A. Baroudi
Figure 1 shows a diagram of an example of CPS which consist of a plant (an autonomous underwater vehicle (AUV)), an observer-based controller, and a network. The plant (AUV) can include one or more actuators and/or sensors. The network can include a wired or wireless network such as a local area network (LAN), a wide area network (WAN), Wi-Fi, ethernet, cellular, the Internet or other suitable network. Actuators can include linear actuators, rotary actuators, electronically controlled valves, relays, etc. Sensors can include sensors generating one or more signals based on a measured location, speed, spatial orientation, temperature, pressure, actuator state, pH, weight, flow rate or other attribute. The observer-based controller can include a programmable logic controller or other suitable device. An autonomous underwater vehicle (AUV) will be described in detail and implemented as an example application to illustrate the effectiveness of our proposed method.
A Survey on Packet Switching Networks
Published in IETE Journal of Research, 2022
Different computers are connected through a network. Connecting different computer systems under the same premises is considered a Local Area Network (LAN), while a WAN is the primary network(s) of ISP(s) (Internet Service Provider), which interconnect(s) the LANs. All the networking within an ISP or between different ISPs connected through routers. High-speed networks have become vital due to frequent video conferencing, online teaching, virtual meetings, etc.