If an unknown destination is targeted, the switch broadcasts to all ports but the source. Computer and operating system latency is the combined delay between an input or command and the desired output. Allows routers involved in a topology change to synchronize at the same time, while not involving routers that are unaffected by the change. After 15 minutes, it would be a good idea for the server to leave and check on other customers. See also client, front end, and server.
Software as a service SaaS is a software distribution model in which a third-party provider hosts applications and makes them. This is still a common topology on the , although modern variants use links instead. The school can provide access to special purpose computing devices which individual users would not normally own. Some systems that normally offer end-to-end encryption have turned out to contain a that subverts negotiation of the between the communicating parties, for example or. This delay is determined by Newtonian physics-based limits of the mechanism excepting mechanics.
Backup A copy of a set of files made for replacement purposes in case the original set is damaged or lost. Spike A sudden and transient increase in the voltage from a power supply. In electronic signaling, the reflection of a signal caused by asudden change in the impedance of the carrier. Headend The end point of a broadband network. Firewall Router or access server, or several routers or access servers, designated as a buffer between any connected public networks and a private network. Modem A device that can covert data signals between analog and digital signaling systems.
Open standard for two-way wireless data communication over high-frequency cellular telephone channels. As a result, many network architectures limit the number of repeaters that can be used in a row, e. If you find this Network definition to be helpful, you can reference it using the citation links above. Hypertext Electronically-stored text that allows direct access to other texts by way of encoded links. However, the size and speed of the server's processor s , hard drive, and main memory might add dramatically to the cost of the system. Computers allow users to create and manipulate information.
Instance In statistical analysis, the single occurrence of a phenomena or event. Asymmetry In networking, a system in which the relationship between two entities is inherently unequal, with each entity restricted to a set of operations and prerogatives defined by its role in the relationship. Broadcast Storm Undesirable network event in which many broadcasts are sent simultaneously across all network segments. Protocol that provides Macintosh users direct access to information and resources at a remote AppleTalk site. There are two ways of defining.
Large internetwork consisting primarily of universities, research institutions, and commercial concerns. These other entities are not necessarily trusted from a security standpoint. Concentrator A synonym for a multi-port repeater that may also perform bridging and routing functions. The project ended in 1994. Bandwidth In analog communications, the difference between the highest and lowest frequencies available in the band.
Congestion Traffic in excess of network capacity. With fiber optics, repeaters can be tens or even hundreds of kilometers apart. The length of the lines are indicative of the delay between those two nodes. Excess traffic is delivered only if network resources are available and can be discarded during periods of congestion. National Inventors Hall of Fame. Multicast Single packets copied by the network and sent to a specific subset of network addresses.
Statistical multiplexing dynamically allocates bandwidth only to active input channels, making better use of available bandwidth and allowing more devices to be connected than with other multiplexing techniques. Local Area Network using bus topology for up to eight devices. See also configuration management, fault management, performance management, and security management. Heterogeneous Network Network consisting of dissimilar devices that run dissimilar protocols and in many cases support dissimilar functions or applications. Within a business, the network drive is usually located on a or a network-attached storage device.