![Page 1: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/1.jpg)
For more notes and topics visit: www.eITnotes.com
Introduction to LAN,MAN
and WAN
![Page 2: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/2.jpg)
LAN(Local Area Network)
MAN(Metropolitan Area Network)
WAN(Wide Area Network)
Network classification by size or scale
![Page 3: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/3.jpg)
A local area network (LAN) is privately owned network that operates in a very small geographical area upto few kilometers.
It is used to link devices in a single office, building or a campus.
The resources to be shared can be a hardware device like printer, software like an application program or data.
The various devices in LAN are connected to central devices called hub or switch using a cable.
Local Area Networks (LANs):
![Page 4: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/4.jpg)
LAN offers high speed communication of data.
LAN is easy to and maintain.
The communication medium used in LAN is co-axial cable, unshielded twisted pair.
LAN operates on principle of the broadcasting.
![Page 5: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/5.jpg)
Client
Client Client
Client Client
Client
The Local Network (LAN)
![Page 6: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/6.jpg)
-Most LANs use fixed wiring although increasingly Wireless connectivity (a WLAN) is becoming common.-The major advantage of a WLAN is that there does not need to be a ‘hard-wired’ connection between the computers. This allows users’ computers to easily join and leave the network, and move around. Normally the computers communicate via an access point’ that is permanently connected to a standard fixed network.
Wireless LAN
![Page 7: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/7.jpg)
A Typical WLAN
![Page 8: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/8.jpg)
• developed by Xerox in 1973–1975
• standardized as IEEE 802.3
• has replaced token ring, FDDI and ARCNET
• usually uses twisted pair cable ( RJ-45)
ETHERNET
![Page 9: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/9.jpg)
Ethernet Standard10BaseT
10Mbps (Mega bits per second)100BaseT
100Mbps1000BaseT
1000Mbps or 1Gbps
![Page 10: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/10.jpg)
A MAN normally consists of a group of LANs, which may be spread across an area the size of a city.
It would normally consist of a number of buildings each with a central hub that connects to the MAN network.
Older MANs use broadcast technologies but as switching has become more efficient point to point relay is now more typical and the boundary between MAN and WAN is now becoming unclear.
Metropolitan Area Network (MAN)
![Page 11: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/11.jpg)
MANs are increasingly using the same access technology as LANs. The links are typically made using microwave, radio, infra-red free-space or optical-fiber links.
![Page 12: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/12.jpg)
WAN covers a large geographic area such as country, continent or even whole of the world.
WAN interconnects two or more LANs(or WANs) and provide long distance transmission of data, images, audio and video information.
may be public, leased or private
Also called “enterprise networks” if they are privately owned by a large company.
Wide Area Network(WAN)
![Page 13: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/13.jpg)
Transmission media include microwave, fibre-optic, telephone lines & satellite.Is typically slower and less reliable than a LAN.Services include internet ,frame relay and ATM(Asynchronous Transfer Mode).The largest and most well-known example of a WAN is the Internet
![Page 14: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/14.jpg)
DIFFERENCE BETWEEN LAN,MAN,WAN
BASIS LAN MAN WAN
Full form Local area network
Metropolitan area network
Wide area network
Geographical span
Operates in small area such as same building or campus.
Operates in large area such as city.
Operates over large area such as country or continent.
Ownership Usually privately owned
Privately or public owned
Usually public owned
![Page 15: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/15.jpg)
BASIS LAN MAN WAN
Setup cost Very cheap Moderate cost
Very costly
Error rate Very low moderate High
Transmission media
Is usually wires such as coaxial cable or UTP
Can be wires or telephone lines
Because of long distance medium can be PSTN or satellite
speed high Moderate Low
Internet working devices
Hub, switch, bridge, repeater
Router, gateways
Router, gatways
![Page 16: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/16.jpg)
BASIS LAN MAN WAN
Example LAN is used in offices or in college campus
MAN is used scale telephone service and cable TV in a city.
WAN is used for internet-working i.e. internet.
![Page 17: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/17.jpg)
It is a set of rules or protocol that governs the transfer of hypertext between two or more computers. The hypertext transfer protocol (http) is a protocol used mainly to access data on the World Wide Web. HTTP functions as a combination of FTP and SMTP.
HTTP: THE HYPERTEXT TRANSFER PROTOCOL
![Page 18: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/18.jpg)
HTTP uses the services of TCP on port 80.The basic operation consists of three steps:1) the client opens a TCP connection and sends
request for a document.2) The server respond with the document.3) The server closes the connection. HTTP transaction between the client and server
consists of request and response. HTTP messages from the client to server are called
HTTP request. HTTP messages from the server to client HTTP
response.
![Page 19: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/19.jpg)
HTTP transaction
![Page 20: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/20.jpg)
HTTP request and response messages
![Page 21: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/21.jpg)
The request line Header Body
Status line Header Body
HTTP request message
HTTP response message
![Page 22: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/22.jpg)
The request line:- it is consists of three elements: methods or request type, URL, HTTP version.Status line:-it is also consists of three elements: HTTP version, status code, status phrase.
![Page 23: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/23.jpg)
HTTP request message:-The request type portion of request line in HTTP request message specifies the various methods.
![Page 24: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/24.jpg)
HTTP response message:-These are status codes of status line in response message
![Page 25: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/25.jpg)
Status codes (continued)
![Page 26: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/26.jpg)
Request header:- The header present in HTTP request message is called request header. Each header has a header name, a colon, a space and a header value.
![Page 27: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/27.jpg)
Various request headers
![Page 28: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/28.jpg)
Various Response headers
![Page 29: EITnotes.com. Client eITnotes.com developed by Xerox in 1973–1975 standardized as IEEE 802.3 has replaced token ring, FDDI and ARCNET usually](https://reader035.vdocuments.us/reader035/viewer/2022062715/56649da05503460f94a8afe6/html5/thumbnails/29.jpg)
THANK YOU