In order to make users access data at any place and at any time, networks should develop from being wired and fixed to being wireless and mobile. A local area network covers individual buildings or public hotspots, spanning hundreds or thousands of square feet. It is important to realize that most of the higher level protocols used on lans are exactly the same protocols that are used in most networks. Components of local area network lan a local area network lan is a group of computers and associated devices that share a common communications line or wireless link. Typically, a local area network lan is a private network owned and maintained by a single organization.
Computer network components include the major parts that are needed to install a network both at the office and home level. Other networking components are used to connect a pc or even a laptop to an ethernet network. By contrast, a wide area network wan not only covers a larger geographic distance, but also generally involves leased telecommunication circuits. Without a nic installed a device will not be able to connect to a network. Access points translate network traffic into radio signals and transmit that signal to wireless enabled computers. An access network may be a socalled localarea network within a company or university, a dial telephone line with a modem, or a high speed cablebased or phonebased access network. Some nic can support a combination of interface, such as an aui and a bnc as well as a rj45. The selection of the type of cable depends on several factors, such as maximum length of a single cable run, security. The local area network lan is a network which is designed to operate over a small physical area such as an office, factory or a group of buildings up to a few kilometers in size. An access point usually consists of a radio, a wired network interface. Local area networks are generally networks that are limited to a relatively small area, such as a room, building, campus, etc. Before following this procedure, refer to safety information found on the last page. Nov 07, 1984 a local area network can save in hardware costs when expensive peripherals are shared.
System information networking, lan, local area network. Lans local area network use ethernet as the primary technology for wired connectivity. Prettymuchanythingthatsconnected to anything else in some way can be described as a network. Ip addresses are 32 bit long, hierarchical addressing scheme. Therefore, the current local area network couldnt meet users demands to certain extent. Fig 1 gives an example of a network in a school comprising of a local area network or lan connecting computers with each other, the internet, and various servers. A localarea network lan connects the computer hardware in a localized area such as an office or home. Components of computer network devices of computer.
Jan 21, 2017 a local area network lan connects the computer hardware in a localized area such as an office or home. Repeaters were once used to increase the usable length of the cable, and they were most commonly associated with coaxial network configurations. Local area network hardware the basic hardware components of a lan are cables, network interface cards, network servers, peripherals, and workstations. It can also be used for communication among personal devices themselves for connecting to a. Usually, a lan comprise computers and peripheral devices linked to a local domain server. For example, you use tcpip on the internet, and youd. In this course, well be primarily concerned with local area. Safety, security, and certification issues, and initial acceptance criteria phases 1 and 2 november 2008. A small office, a single building, multiple buildings inside a campus etc. A packet sent down the stack flows through the link layer queue and ll, the mac layer mac, and the physical layer channel to classifiermac. Ip is a standard that defines the manner in which the network layers of two hosts interact. Components of computer network devices of computer networks.
Ethernet is the dominant standard that is used on our lan, wireless devices use another standard. These components are covered in the material that follows. The basic wireless, peertopeer network consists of these components. That is, one network can be connected to another network and become a more powerful tool because of the greater resources. What is lan and different components of local area network. Below image shows a small local area network lan connected together using a network switch. The selection of the type of cable depends on several factors, such as maximum. Most lans are used to connect computers in a single building, campus, office or room etc. Access points an access point acts as the main radio transmitter for your wireless lan.
Also, most local networks support at least 100 stations, or nodes. System information networking, lan, local area network, nic. Mengdi ji designing and planning a campus wireless local area. Cables several types of cables can be used in lan applications. A local area network can save in hardware costs when expensive peripherals are shared. Advantages and disadvantages of local area network lan. Compared with local area networks, wireless local area networks offer ad. By contrast, a wide area network wan not only covers a larger geographic distance, but also generally involves leased telecommunication circuits ethernet and wifi are the two most common technologies.
Pretty much anything thats connected to anything else in some way can be described as a network. This project, design and implementation of wireless local area network was written to serve as a reference book for wireless lan in the future whenever it is desired. The heart of the wireless network is the wireless router. A local area network lan is a group of computers and associated. Its laid out similarly to a wired network, but without wires. Introduction to local area networks for microcomputers. Wide area networks wan is type of computer network to connect offices which are located in different geographical locations. Mengdi ji designing and planning a campus wireless local. Advantages and disadvantages of local area network lan it. Enterprise organizations is a comprehensive network design targeted at organizations with 2000 to 10,000 connected users. Lans very widely used in a variety of computers to share resources e.
The need for more costeffective and capable communications has inspired the emergence of rapidly developing markets and technologies for local area networks. Sharing of equipment like printers, scanners, fax machines, copiers, storage drives, network connection and other resources is the key rationale of computer network. In this course, well be primarily concerned with local area networks. Networks can be defined as a collection of independent computers and other devices interconnected by a communication medium, such as coaxial cables, twisted pairs of optical fibers. Cs 536 park introduction what is a computer network. A local area network lan is a number of computers and computer peripherals disc. The essential computer network components necessary for a simple computer network, usually called lan local area network, are to share resources on that network. A local area network is a highspeed, mediumdistance communication system.
The packet then makes its way up the stack through the mac, and the ll at the bottom of the stack, the physical layer is. Business network administration basic components firewall. A local area network lan is a private computer network that connects computers in small physical areas. These hardware components include cable, hub, switch, nic network interface card, modem and router. The nic, also known as a network adapter, enables the device to send and receive data via the network either through the use of an ethernet cable or wireless connection. A local area network lan is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. All network appliances can use a shared printers or disk storage. Like any other data communication network, a local area network is composed of three basic hardware elements. In other lessons, we will dive into the different protocols that are. Localarea network hardware the basic hardware components of a lan are cables, network interface cards, network servers, peripherals, and workstations. Lan, which stands for local area network, and wan, which stands for wide area network, are two types of networks that allow for interconnectivity between computers. Jul 31, 2015 the essential computer network components necessary for a simple computer network, usually called lan local area network, are to share resources on that network. Computer networking and management lesson 1 computer. For most lans, the maximum distance between two nodes in the network is at least one mile, and the transmission speed ranges from 1 to 20 megabaud.
If your customer wants you to design a local area network, there are numerous tasks to pursue working through a networking hierarchy that extends from the access layer to the core, determining what subnet mask to use and, in general, learning the customers networking requirements. Components of a local area network like any other data communication network, a local area network is composed of three basic hardware elements. These are the basic components a network requires in order to provide a robust and secure it environment. The selection of the type of cable depends on several factors, such as. A local area network lan is a devices network that connect with each other in the scope of a home, school, laboratory, or office. Larger networks are generally called metropolican area. The borderless network for enterprise architecture incorporates localarea network lan access for wired and wireless users, widearea network wan connectivity, wan. It generally consists of a mobile computer, a cell phone or personal digital assistant. A network is a group of computers, peripherals, applications, databases, data, voice devices and video devices which are connected by communication mediums. Chapter 7 wired and wireless local area networks chapter. Networking components and devices introduction pearson.
A local area network lan is a group of computers and associated devices that share a common communications line or wireless link. Network interface cards nic network interface cards nic are a hardware technology which is installed in the computer to help establish a network. Typically, lans use wired connections to link the computers to each other and to a variety of peripheral devices such as printers. Before delving into the installation process, you should be familiar with each part so that you could choose and buy the right component that fits with your network system. A wireless local area network wlan is a group of wireless networking devices within a limited geographic area, such as an office building, that exchange data through radio communications. Traditionally, any discussion of networking components would include repeaters, but today repeaters are a little outdated. Some of the network devices we use on our lan are switches, access points, and routers. Personal area network pan a personal area network is a computer network organized around an individual person. Network interface cards nics are most commonly used for the establishment of local area network. A local area network serve for many hundreds of users. The components used to establish a local area network lan have a variety of functions. Identify the purpose, features, and functions of the following network components. Local area network lan communications installation guide. Wired and wireless local area networks chapter summary this chapter examines the three major network architecture components that use local area networks lans.
This network design checklist provides tips on how to build a local. What distinguishes a local network from a wide network are the usage models they support along with some rough limits on physical distance and area. Nic is connected to the wired network systems such as token ring and ethernet. Components mio cover with lan board assembly lan crossover cable. This network design checklist covers some of the big ones that will hopefully get you pointed in the right direction and, more importantly, provide you with a happy and returning customer. Download this computer networking pdf excerpt from computer networks, a book that addresses the key principles of computer networks. Introducing basic network concepts 3 basetech networking concepts team 2230894 blind folio 3 figure 1. Those include your actual computers, their network interfaces, and all of the switches, hubs. A wide range of devices are used in modern networking. As the naming conventions suggest, lans are for smaller, more localized networking in a home, business, school, etc. When the devices are in close proximity, such as in a building, the network is referred to as a local area network lan. Computer accessories include printers, scanners, game consoles etc. Computer networking and management lesson 1 computer networks.
Guidelines for securing wireless local area networks wlans. Networking components and devices introduction pearson it. Like a wirebased network, the hub is a central location that all computers connect to, providing the computers with network access. Auibnc transceivers can be used to connect a pc or a laptop to a different network interface. Typically, connected devices share the resources of a single processor or server within a small geographic area. These instructions provide the procedure for adding a local area network lan communications interface to an agilent 6820 gas chromatograph hereafter referred to as the gc. Components of a wireless lan typically there are a couple of components essential for a wireless lan. Guidelines for securing wireless local area networks wlans vi executive summary a wireless local area network wlan is a group of wireless networking devices within a limited geographic area, such as an office building, that exchange data through radio communications. A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. Network interface cards nics, isdn adapters, and system area network cards. Lan is used to make the connection of computers within one building.
Local area network lan is a computer network, which is limited to a small office, single building, multiple buildings inside a campus etc. Local area networks lan and wide area networks wan. Local area network is a network for connecting computers and other computer accessories with each other. Local area network, lan, network, wan, wide area network, man, metropolitan area network, developing country, communications, communication media. A lan is useful for sharing resources like files, printers, games or other applications.
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