What is network definition? Well, a network definition defines a computer network which consists of a series of computers connected together and accessible via a local network or Internet. A computer network is also a collection of computers sharing similar resources provided or located in network nodes. The computers use common communications protocols over logical interconnections to talk with each other. With the advent of the Internet, network definition has been extended to include various other concepts, like subnet, routing, and VPN.
A data network definition is very similar to network definition. Data networks are used for storing and transmitting large amounts of data. A data network usually has its own address space and network configuration management tools. This means that there is usually no single point of data transmission over the network. Instead, multiplexers and network repeaters are used to transmit data to and from areas or host computers.
A data link layer controls the way how the data packets are transmitted and received by the network. There are four layers in a data link layer – the upper layer routes the data packets between hosts and servers, the middle layer controls how the data packets are stored in the computers and the lower layer controls how the data packets are routed to their destinations. This means that the IP network layer is actually composed of four separate elements.
The upper layer controls how the data packets are transmitted. The first layer introduces the network models and the second layer establishes the rules for generating the traffic. For example, a high latency model would be required for slow Internet connections. In addition, a high latency peak is required for large data packets. The latency must be considered along with the minimum and maximum rates allowed for the service level agreements.
A data network consists of a core network plus several additional interfaces. These additional interfaces can be used for point-to-point connections or for multilayer connectivity. In general, data networks have two or more layers of networking.
The next layer is the data link layer provides the link between the core network and the networks using LSI or ISSI commands. Some of the standard protocols used are ACD, BSDI, IBSS, MPLS, ISAPI, QoS, RPLS, and SLP. The next layer is encapsulated within the transport layer. This layer may include such options as LPDTS, MPLS, OSP, or STP. It also contains such options as QoS, auto discovery, default gateway, routing table, and so on.
Tips to Plan a Network Design
The final layer is the application layer provides controls for the application programs on the computer network. For example, the internet protocol (IP) uses the layer to determine the method of establishing a connection to a remote site. There are IP telephones and IP telephony that make use of this layer. The routing protocol defines the path of information packets on this layer.
A wide area network has many functions for business organizations. Some of the most common functions it performs include network gaming, remote access to the desktop, video conferencing, and file and printer sharing. The term “wide area network” covers any system that has at least one network interface and that can be accessed by multiple end users, and whose total distance does not exceed 5 miles. One example is the intranet, which is the predecessor of the modern Internet.
With a wide area network, the data travels along a circuit within a bigger area. The circuit is referred to as a circuit network. In case of a local area network, the data travels through the same circuits that the service provider uses to provide service. Wide area networks are usually used in business and organizations that require fast transfer of large volumes of data. The speed of a circuit network is dependent upon factors such as its size, length, and material composition. Among these, length is the most important factor.