what is network and types of network - A network consists of two or more computers that are linked in order to share resources (such as printcrs arid CDs), ex- change files, or allow electrunic communications.
The computers on a network may belinked through cables, telephone lines, radio waves. sateLlites, or inlrared light bcams.
types of networks include:
- Local Area Network (LAN)
- Wide Area Network (WAN)
- Metropolitan Area Network(MAN)
- wireless WAN (WWAN)
- Wireless Local Area Network (WLAN)
- Personal Area Network (PAN)
A Local Area Network ( LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab. school, or building.
Computers connected to a network are broadly categorized as servers or workstations. Servers are generally not used by humans directly. but rather run continuovsly to provide "services" to the other computers (and their human users) on the network. Services provided can include printing and faxing,sofiware hosting, file storage and sharing, messaging, data storage and retrieval, complete access control (security) for the network's resources, and many others.
Wide Area Networks (WANs) connect networks in larger geographic areas. such as Florida. the Unitcd States, or the world. Dcdicated transoceanic cabling or satellite uplinks may be used to connect this type of global netwurk. Using a WAN, schooLsin Florida can communicate with places like Tokyo in a matter of seconds, without paying enormous phone bills. Two users a half-world apan with workstations equipped with microphones and a webcams might telecon- ference in real time. A WAN is complicated. It uses multi- plexers, bridges, and routers to connect iocal and metropoli- tan networks to global communications networks like the Intemet. To users, however, a WAN will not appear to be much different than a LAN.
A metropolitan area network. or MAN, consists of a com- puter network across an entire city. college campus or small region. A MAN is larger than'a LAN, which is typically lim- ited to a single building or site.A metropolitan area network (MAN) is a computer network that connects users with computer resources in a geographic area the size of a metropolitan area. The term MAN is applied to the interrelationship of local area networks (LANs) in a city in a large network, which can provide an efficient connection to a wide area network. The term is also used to describe the interrelation of different local area networks in a metropolitan area.
Wireless Local Area Network (WLAN):
It used radio waves as it's carrier. Areas may range from a single room to an entire office. There is a great need in the world for wireless area networks that provide the convenience of access to information without being linked in a specific workplace. Wireless area networks surround us everywhere and have already entered our lives. One of the driving forces behind such development is the rapid growth in the number of mobile devices and the emergence of new standards for Wi-Fi technologies to guarantee higher information transfer speeds. In general, wireless solutions have no other alternatives where there is no possibility of guaranteeing the wired connection or their cost is too high and requires a long time for the implementation demands.
Personal Area Network (PAN) :
It is used for communication among computer and different information technological device close to one person. The personal network (PAN) is a computer network for connecting electronic devices centered on an individual's work area. PAN provides data transmission between devices such as computers, smartphones, tablets and personal digital assistants. PAN can be used for communication between individual devices or to connect to high-level networks and the Internet where a master device acts as a gateway. Pan can be wireless or performed over a wired interface such as USB. (E.g. Bluetooth)
Wireless Local Area Network (WLAN):
It used radio waves as it's carrier. Areas may range from a single room to an entire office. There is a great need in the world for wireless area networks that provide the convenience of access to information without being linked in a specific workplace. Wireless area networks surround us everywhere and have already entered our lives. One of the driving forces behind such development is the rapid growth in the number of mobile devices and the emergence of new standards for Wi-Fi technologies to guarantee higher information transfer speeds. In general, wireless solutions have no other alternatives where there is no possibility of guaranteeing the wired connection or their cost is too high and requires a long time for the implementation demands.
Personal Area Network (PAN) :
It is used for communication among computer and different information technological device close to one person. The personal network (PAN) is a computer network for connecting electronic devices centered on an individual's work area. PAN provides data transmission between devices such as computers, smartphones, tablets and personal digital assistants. PAN can be used for communication between individual devices or to connect to high-level networks and the Internet where a master device acts as a gateway. Pan can be wireless or performed over a wired interface such as USB. (E.g. Bluetooth)
Post a Comment