In information technology, a network is a series of points or nodes interconnected by communication paths. Networks can interconnect with other networks and contain subnetworks. 

A method of bolstering the security of a proprietary network by restricting the availability of network resources to endpoint devices that comply with a defined security policy.

A computer server that enables an independent service provider (ISP) to provide connected customers with Internet access. A NAS has interfaces to both the local telecommunication service provider and to the Internet backbone.

The translation of an Internet Protocol address (IP address) used within one network to a different IP address known within another network. 

A network administrator is an individual that is responsible for the maintenance of computer hardware and software systems that make up a computer network including the maintenance and monitoring of active data network or converged infrastructure and related network equipment. Network administrators are generally mid-level support staff within an organization and do not typically get involved directly with users. Network administrators focus on network components within a company's LAN/WAN infrastructure ensuring integrity. Depending on the company and its size, the network administrator may also design and deploy networks.

A combination of hardware and programming, or in some cases a stand-alone hardware device, that can be installed in a computer or network to enhance protection against malicious activity.

A term used to denote a relatively low-cost PC designed for Internet access and specialized business use, but without the capabilities of a fully-equipped PC.

A mechanism that classifies and regulates bandwidth for network applications to ensure that available resources are utilized as efficiently as possible. 

A program that allows applications on different computers to communicate within a local area network (LAN). NetBIOS is used in Ethernet and Token Ring networks and, included as part of NetBIOS Extended User Interface (NetBEUI).

A way to enhance the security of a proprietary network by monitoring traffic and noting unusual actions or departures from normal operation.

The continuous monitoring of a proprietary network for unusual events or trends. NBAD offers security in addition to that provided by traditional anti-threat applications such as firewalls, antivirus software and spyware-detection software. 

Network cables are used to connect two or more computers/devices (printer, scanner etc.). There are different types of network cables like Coaxial cable, Optical fiber cable, Twisted Pair cables, USB cables and crossover cables are used depending on the network's topology, protocol and size.

A method of optimizing the flow of digital data in a network by transmitting digital evidence about messages. 

A concept from Oracle and Sun Microsystems that describes a low-cost personal computer for business networks that, like the NetPC, would be configured with only essential equipment and managed centrally. 

The process of organizing and maintaining information about all the components of a computer network. 

A congestion that occurs when a link or node is carrying so much data that results in queueing delay, packet loss or the blocking of new connections.