Question

what is the principal component of telecommunication?

what is the different type of networks?

what is communications network?

Answer 1

1. Telecommunications are the means of electronic transmission of information over distances. The information may be in the form of voice telephone calls, data, text, images, or video.

A telecommunications network includes the following components------------------

1. Computer: Computers that process information and are interconnected by the network.

2. Network Interface: Each computer on the network contains a network interface device called a network interface card (NIC).

3. A Connection medium: The connection medium for linking network components can be a telephone wire, Coaxial cable or radio signal in the case of cell phone and wireless local area networks.

4. Network operating System software: The network operating system (NOS) routes and manages communications on the network and coordinates network resources.

5. Hub or switch----Hubs are very simple service that connects network components, sending packet of data to all other connected data.

2. Types of Networks ------------

1. LAN (Local Area Network)--------------A Local Area Network is a privately owned computer network covering a small Networks geographical area, like a home, office, or groups of buildings e.g. a school Network. A LAN is used to connect the computers and other network devices so that the devices can communicate with each other to share the resources. The resources to be shared can be a hardware device like printer, software like an application program or data. The size of LAN is usually small. The various devices in LAN are connected to central devices called Hub or Switch using a cable.

2. MAN (Metropolitan Area Networks) -----------MAN stands for Metropolitan Area Networks is one of a number of types of networks. A MAN is a relatively new class of network. MAN is larger than a local area network and as its name implies, covers the area of a single city. MANs rarely extend beyond 100 KM and frequently comprise a combination of different hardware and transmission media. It can be single network such as a cable TV network, or it is a means of connecting a number of LANs into a larger network so that resources can be shared LAN to LAN as well as device to device.

3. WAN (Wide Area Networks) ----------A wide area network (WAN) is a telecommunication network. A wide area network is simply a LAN of LANs or Network of Networks. WANs connect LANs that may be on opposite sides of a building, across the country or around the world. WANS are characterized by the slowest data communication rates and the largest distances. WANs can be of two types: an enterprise WAN and Global WAN,

4. WLANs - Wireless Local Area Networks -------------WLANs (Wireless Local Area Networks or sometimes referred to as LAWN, for local area wireless network) provide wireless network communication over short distances using radio or infrared signals instead of traditional network cabling. WLANs (Wireless Local Area Networks) is one in which a mobile user can connect to a local area network (LAN) through a wireless (radio) connection.

3. A communication network is the pattern of directions in which information flows in the organization. Channels of communication (networks by which information flows) are either formal networks or informal networks. A communication Network is a collection of methods that users employ to pass on valuable information. The communication network is the sum of all the means and methods that an organization employs to communicate.