3 Wireless Local Area Network WLAN
1. Local Area Network (LAN)
A LAN, also called Local Area Network, is a network at a single site, such asan office or commercial establishment. These networks can be built usingrelatively expensive hardware (Ethernet cables, network adapters, hubs, etc.)and are ideal for sharing resources like printers and data storage. Thesmallest LAN can consist of only two computers, whereas larger LANs managethousands of computers.
3. Wireless Local Area Network (WLAN)
A WLAN, or Wireless Local Area network, functions much like a LAN and relieson wireless network technology like WiFi. These networks support the sameapplications as LANs and don’t require physical cables like Ethernet, makingthem relatively easier to set up.
2. Local Area Network or LAN:
A local area network, or LAN, consists of a computer network at a single site,typically an individual office building. A LAN is very useful for sharingresources, such as data storage and printers. LANs can be built withrelatively inexpensive hardware, such as hubs, network adapters and Ethernetcables.The smallest LAN may only use two computers, while larger LANs can accommodatethousands of computers. A LAN typically relies mostly on wired connections forincreased speed and security, but wireless connections can also be part of aLAN. High speed and relatively low cost are the defining characteristics ofLANs.LANs are typically used for single sites where people need to share resourcesamong themselves but not with the rest of the outside world. Think of anoffice building where everybody should be able to access files on a centralserver or be able to print a document to one or more central printers. Thosetasks should be easy for everybody working in the same office, but you wouldnot want somebody just walking outside to be able to send a document to theprinter from their cell phone! If a local area network, or LAN, is entirelywireless, it is referred to as a wireless local area network, or WLAN.for more info
1) Local Area Network (LAN)
LAN is a group of computers (as shown in Fig.1), that are connected in a smallarea such as building, home, etc. Through this type of network, users caneasily communicate with each other by sending and receiving messages. LAN isgenerally used for connecting two or more personal computers through somemedium such as twisted pair, coaxial cable etc. Through the number ofcomputers connected in a LAN is limited, the data is transferred at anextremely faster rate.fig.1
We are convinced that you have already heard of these types of networks –local networks are the most discussed networks, one of the most common, themost original and the simplest.Local networks connect groups of computers and low-voltage devices over shortdistances (in a building or between two or three buildings close to eachother) to share information and resources. Companies generally manage andmaintain local networks.Using routers, LANs can connect to wide area networks (WAN, explained below)to quickly and securely transfer data.
3. Wireless Local Area Network (WLAN)
Functioning as a local network, WLANs use wireless network technology , suchas Wireless . Typically visible in the same types of applications as localarea networks, these types of networks do not require devices to use physicalcables to connect to the network.
1. Local Area Network (LAN) :
A local area network or LAN consists of a computer network at a single site,typically an individual office building. A LAN is very useful for sharingresources, such as data storage and printers.LANs are typically used for single site where people need to share resourcesamong themselves but not with the rest of the outside world.Think of office building where everybody should be able to access files on acentral server or be able to point a document to one or more central printers.Those tasks should be easy for everybody working in the same office, but youwould not want somebody just walking outside to be able to send a document tothe printer from their cell phone! If a local area network, or LAN, isentirely wireless, it is referred to as a wireless local area network or WLAN.
Local Area Network (LAN)
A wireless LAN or WLAN is a wireless Local Area Network, which is the linkingof two or more computers without using wires. It uses radio communication toaccomplish the same functionality that a wired LAN has. WLAN utilizes spread-spectrum technology based on radio waves to enable communication betweendevices in a limited area, also known as the basic service set. This givesusers the mobility to move around within a broad coverage area and still beconnected to the network. * IEEE 802.11: IEEE 802.11, the Wi-Fi standard, denotes a set of Wireless LAN/WLAN standards developed by working group 11 of the IEEE LAN/MAN Standards Committee (IEEE 802). The 802.11 family currently includes six over-the-air modulation techniques that all use the same protocol. The most popular (and prolific) techniques are those defined by the b, a, and g amendments to the original standard.The table below summarises the different 802.11 standards:Protocol|Release Date|Op. Frequency|Data Rate (Typical)|Data Rate (Max)|Range (Indoor) —|—|—|—|—|— Legacy|1997|2.4 -2.5 GHz|1 Mbit/s|2 Mbit/s|? 802.11a|1999|5.15-5.35/5.47-5.725/5.725-5.875 GHz|25 Mbit/s|54 Mbit/s|~30 meters (~100 feet) 802.11b|1999|2.4-2.5 GHz|6.5 Mbit/s|11 Mbit/s|~50 meters (~150 feet) 802.11g|2003|2.4-2.5 GHz|11 Mbit/s|54 Mbit/s|~30 meters (~100 feet) 802.11n|2006 (draft)|2.4 GHz or 5 GHz bands|200 Mbit/s|540 Mbit/s|~50 meters (~160 feet)
1. Local Area Network (LAN)
LAN is a communication network used by a single building or organization overa limited distance. The network enables the user to share information andresources. A LAN required that the particular workstation should be physicallyjoint together by cabling and that some network software is on theworkstation. In addition of size, LAN stand apart from other types of networks by theirtransmission media and topology. In general a given LAN uses only onetype oftransmission medium. The most common LAN topologies are Bus, Ring and Star.The data transmission speed in LAN is up to 10 Mbps. LAN uses either Ethernetor Token-ring technology. Types of Local Area Network (LAN): –There are two different types of LAN: 1. Wired LAN: – wired LAN fixed wiring such as twisted pair or coaxial coaxial cable as the transmission. 2. Wireless LAN :– wireless LAN utilized radio or light waves. Examples of LAN are:ETHERNET –Xerox Corporation OMININET- Corvus System Advantages of LAN * LAN permits sharing of expensive hardware. * It provides high transmission rate to accommodate the needs of both people and equipment. * It provides very much security and fault tolerance capability. * LAN provides cost effective multiuser computer environment.Disadvantage of LAN * Installation and reconfiguration always requires technical and skilled man power. * Due to sharing of resource, sometime operation speed may be slow down.
1. Local Area Network (LAN)
1. Local area network is a group of computers connected with each other in asmall places such as school, hospital, apartment etc. 2. LAN is secure because there is no outside connection with the local areanetwork thus the data which is shared is safe on the local area network andcan’t be accessed outside. 3. LAN due to their small size are considerably faster, their speed can rangeanywhere from 100 to 100Mbps. 4. LANs are not limited to wire connection, there is a new evolution to theLANs that allows local area network to work on a wireless connection.
LAN(Local Area Network)
* Local Area Network is a group of computers connected to each other in a small area such as building, office. * LAN is used for connecting two or more personal computers through a communication medium such as twisted pair, coaxial cable, etc. * It is less costly as it is built with inexpensive hardware such as hubs, network adapters, and ethernet cables. * The data is transferred at an extremely faster rate in Local Area Network. * Local Area Network provides higher security.* * *
2. Local Area Network (LAN)
We’re assured that you’ve heard of these kinds of networks earlier than – LANsare the most often mentioned networks, one of the most common, one of the mostauthentic and one of the easiest kinds of networks. LANs join organizations ofcomputer systems and low-voltage units collectively throughout quick distances(within a constructing or between a crew of two or three structures in shutproximity to every other) to share records and resources. Enterprises normallycontrol and hold LANs. Using routers, LANs can join to broad vicinity networks (WANs, defined below)to hastily and safely switch data.
LAN (Local Area Network)
LAN Network aapko har jagah dekhne ko mil jayega jaise Office, College,School, Companies etc. LAN ka use Resource Sharing, Data Storage, DocumentPrinting ke liye kiya jata hai. LAN network banane ke liye kam Hardware kijarurat padti hai jaise hub, switch, network adapter, router and Ethernetcable.Sabse Chhota LAN banane ke liye kewal do Computer ki jarurat padegi. Ek LAN se1000 Computers ko apase me wire connection or wirless connection ke dwara jodsakte hai. LAN ki sabse achi baat hai ki Kam budget me speed network.Official work me document sharing and printing ke liye LAN ka use hota hai.Document Sharing means ek central server hota hai jisme official data storerahta hai jisse koi bhi employee, user id and password enter ka data ko accesskar sakta hai. Yadi kisi ko print karna hai to wah Central Printer ki help seprint kar sakta hai. Yadi LAN, wirless connection se bana hai to use WirelessLAN kaha jata hai.