AQA A2 Computing 6.2 Networks Flashcards
Local area network
linked computers in close proximity
Stand alone computer
a computer that is not networked. It requires its own printer and other peripherals plus its own installation of application software.
Topology
In the context of networking, the shape, layout, configuration or structure of the connections that connect devices to the network
Wide area network
a set of links that connect geographically remote computers and local area networks
Internet
a collection of LANs and computers that are interconnected by WAN
Network segment
in Ethernet, a run of Ethernet cable to which a number of workstations are attached
Thin-client network
a network where all processing takes place in a central server, the clients are dumb terminals with little or no processing power or local hard disk storage
Peer to peer network
a network that has no dedication servers. All computer are equal, so they are called peers
Client
a computer that uses the services provided by a server
Server
a computer that provides shared resources to network users
Server-based network
a network in which resources security and administration and other functions are provided by dedicated servers
Web 2.0
software that becomes a service accessed over the internet
Web services
self-contained, modular applications that can be described, published, located and invoked over a network, generally the web
SaaS
software as a service; a model of software deployment where an application is hosted as a service provided to customers across the internet
Web services architecture
where all components in the system are services
Ajax
a web technology that allows only the part of a web page that needs updating to be fetched from the web server
Wireless network
any type of LAN in which the nodes (computers or computing devices, often portable devices) are not connected by wires but use radio waves to transmit data between them
Wi-Fi
trademarked IEEE 802.11 technologies that supprt wireless networking of home and business networks
Bluetooth
a wireless protocol for exchanging data over short distances from fixed and mobile devices
Router
a device that receives packets or datagrams from one host (computer) or router and uses the destination IP address the packets contain to pass them, correctly formatted, to another host (computer) or router
Gateway
a device used to connect networks using different protocols so that information can be passed from one system to another
