LANs can be distinguished from other networks because of their short distance. The total coverage may be from 1 km to 10 kms. The data transmission speed of LANs is much higher than in other types of networks. When a WANs works at a speed of 1 mbps, LANs can transmit data at a speed of 1 - 10 mbps.
A computer network is mainly of four types:
A LAN (local area network) is a group of computers and network devices connected together, usually within the same building. ... A WAN connects several LANs, and may be limited to an enterprise (a corporation or an organization) or accessible to the public. The technology is high speed and relatively expensive.
Computer networks are typically classified by scale, ranging from small, personal networks to global wide-area networks and the Internet itself. The following readings provide detailed information on the common network classifications: Wikipedia: Computer Network - Scale. ... Wikipedia: Wide Area Network (WAN)
There are five types of topology in computer networks:
star topology
13.
The major topologies of LAN are:
LAN Architectures Aspects of LAN architecture. These include the ; LAN's physical topology LAN's logical topology LAN's MAC protocolEthernet Frame Formats Fast Ethernet – refers to 100BaseT Ethernet implementations that comply with the IEEE 802.
In general, there are two types of LANs: client/server LANs and peer-to-peer LANs. A client/server LAN consists of several devices (the clients) connected to a central server.
There are three common topologies found in LANs: star, ring, and bus.
Star topology
Local Area Networks The two logical topologies are broadcast (also known as bus) and sequential (also known as ring). In a broadcast topology, all devices on the network receive every message transmitted. Each device is responsible for recognizing messages meant for it.
star topology
A standard Ethernet network can transmit data at a rate up to 10 Megabits per second (10 Mbps). Other LAN types include Token Ring, Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet, Fiber Distributed Data Interface (FDDI), Asynchronous Transfer Mode (ATM) and LocalTalk.
Star Bus is a networking topology in which hubs for workgroups or departmental local area networks (LANs) are connected by using a network bus to form a single network. Star bus topology is a combination of star topology superimposed on a backbone bus topology.
The ring topology was implemented using the Internet protocol (IP), so that data could be rerouted if a link was congested or one of the links that was part of the ring failed. In the USA the Sprint Corporation was at the forefront of building fibre optic rings that routed IP Packets on the MAN backbone.
A metropolitan area network (MAN) is a network with a size greater than LAN but smaller than a WAN. It normally comprises networked interconnections within a city that also offers a connection to the Internet.
Disadvantages of MAN Network
ring topology
Three of the main topologies include bus, star and ring.
mesh topology
These topologies can include a mix of bus topology, mesh topology, ring topology, star topology, and tree topology. The choice to use a hybrid topology over a standard topology depends on the needs of a business, school, or the users.
Hybrid topology is an integration of two or more different topologies to form a resultant topology which has many advantages (as well as disadvantages) of all the constituent basic topologies rather than having characteristics of one specific topology.
Explanation: A hybrid topology is one that is a variation or a combination of other topologies. Both partial mesh and the extended star are examples of hybrid topologies.
A star topology, the most common network topology, is laid out so every node in the network is directly connected to one central hub via coaxial, twisted-pair, or fiber-optic cable.