File Name: examples of lan and wan networks .zip
Wide Area Network, or WAN, is a geographically distributed network composed of local area networks LANs joined into a single large network using services provided by common carriers. Wide area networks WANS are commonly implemented in enterprise networking environments in which company offices are in different cities, states, or countries or on different continents. WAN technologies were previously limited to expensive leased lines such as T1 lines, slow packet-switching services such as X.
Wide Area Network WAN is a collection of various local area networks LAN to transmit the data to the large geographical area in the form of voice, video, image, files.
A LAN is a small area network that connects the network only for a limited distance. Ethernet and wifi fall under the local area network. Merely, the network of all local area networks is called a Wide area network WAN. It connects different LANs and other networks for communication and to share and access data from one user to another user over a longer distance. Many user computers, organizations, employees use the WAN to communicate with another user computer, employees to access the information, discuss and share data all around the world.
The third-party service providers are involved in the connection between the users and the internet. The Service provider is responsible for the transfer of data from one user to another user. Service providers supply a link to interconnect the distinct LANs to the internet. A very known example of WAN is the internet itself. The internet is a largely connected distributed network where any person can communicate with anyone, anywhere around the globe.
There is no central control that interconnects different networks to carry data from one place to another in a small amount of time. A bank cash dispenser is a network that connects to the internet. It allows the customers to withdraw the amount of money and update the account details to the customer. Different WANs are connected to the internet using satellite links or leased lines.
As we have mentioned earlier, a Wide Area Network is a group of distant local area networks. In a local area network, the network is connected only for a certain distance. While In Wide Area Network, the network is connected across a longer distance. There are numerous ways to connect through WANs. These service providers supply a link to interconnect the distinct LANs to the Internet.
A cellular connection is established with a communication satellite to communicate with distinct systems. The ISP Internet service provider connects to the telecommunication satellite to send the signals or information to distant locations.
With the help of the telecommunication satellite, the ISP sends the information to the geographical area networks. The above figure represents the Switched WAN. A switched node is used in global communication. It is a group of several point-to-point WANs that has more than two end connections.
Several nodes have connected to the switches to transfer the data over to other nodes or a public network. Point-to-Point connection diagram represents the communication between two nodes. It provides a link between the two nodes of equal bandwidth. When a connection is established between modem and ISP, a leased line is dedicated on two sides to exchange the data among two devices.
For Example, if a person or a device wants to send information from one system to another, a leased line is created between the two systems by the HDLC method. The Circuit switching employed in public telephone networks, all the public telephone networks are in the form of Circuit switching.
Data communication and voice communication uses circuit switching network. We obtain a path between the two networks by establishing a Switch between the two devices.
This switch will find the route to the destination address. To Overcome the problems in circuit switching, we use packet switching. Packet switching divides the data into several packets and sends the packets sequentially to the destination address only one at a time. The data transmitted in packets. Each packet consists of the destination address and user information. In frame relay, all the nodes connect to the frame relay network by using packet switching technology.
The Frame relay comes under the WAN protocol with high-level performance. The data sent in different routes by dividing it into frames. In Frame relay, it shares the bandwidth to different nodes so as there is no wastage of bandwidth and cost-free.
WAN Aggregation is connecting different links at a single point connection to maintain the connectivity among all the other devices. As in evolving technology, Many companies, corporations are progressing their enterprises across the world. To Overcome this, WAN aggregation is the optimal solution. The aggregating is the connectivity from the corporate headquarters, multiple company branches to communicate with each other.
The employees must able to access resources and applications without compromising security and privacy. Currently, mobility and Social media have directed to increase in the usage of the applications leading to cause a drastic change in user behavior. With an increase in the utilization of applications, there is an enormous increase in data generations in diversifying locations and in many business functions. These consume higher bandwidth and demands security and privacy.
The TCP developed to look into how much data content is delivered. It defines the required bandwidth for transmission data. The TCP optimization is simply a Window Size that examines the time taken to wait for the transmission of data, to reduce the bandwidth and increase the performance of data transfer. When a router wants to send the information from one router to another router, it passes through a WAN Optimization box.
The WAN optimization stores all the storage in actual data by dividing the data into multiple subparts. This Actual data sent to the other side of the network. The process of data transfer is called a cold Transfer. The second type of data transfer is to send the stored data again is called a Warm transfer. It reduces all the duplicate data that increase space in the storage area and allows to store more non-redundancy data in it.
The public network services are putting many users at risk regarding privacy and security. WAN security is the Basic requirement to connect various companies to their corresponding databases. If we want to access information from an external cloud service, a link between the client and server-side connected to the external IP address. The SD-WAN is used as a default feature in many Corporate companies for security, optimization, and privacy in networks.
It is a distributed network over a large geographical area. Many local area networks get connected to the WAN. Wide Area Network can send the information from one branch office to the other branch offices or users at various locations. Many Corporations, business holders are maintaining the wide-area network to enhance and stand in this competitive world. It connects all the remote users, telecommunication services, various branch offices through a WAN.
In the s and early s X. As in expanding technology, modern WAN technology came into power. In the s, the network is established only for the local area computers and personal computers with a speed of 56kbps. In , WAN Technology came into force, and soon more expensive and faster connections have been established. In the early s, ATM services and Frame Relay concepts were introduced that establish cloud services.
These cloud services all the organizations and company critical information that no longer need to be maintained. The Mpls uses an IP address within the same network. In different WAN technologies, there is a constant decrease in the bandwidth and make it available for all the organizations at a low cost. To cause one-to-one communication between the two devices or systems, we apply the concept called Switching.
In-Circuit Switching Network, a dedicated path is maintained to make a one-to-one connection between the two devices. While the transmission, all the packets work in the same Path, and fixed resources are allocated in circuit switching. The below figure represents the Circuit Switching.
All the Switches interlinked with each other through the channels. In the voice-over-internet protocol, all the phone calls from the user telephone will be sent to the service provider.
This service provider receives the call as audio. VOIP is the connection between the user phone and the service provider to make the audio transmissions.
VOIP packs different audio signals into the data packets with some protocols, these data packets are unpacked at the receiver end with the same protocols. Due to abundant features and low-cost services, many organizations enterprises are using VOIP Technology. Session initiation protocol, a session description protocol, skype protocol are some of the protocols we use in the VOIP.
In the early days, WAN connects different applications anytime from various locations. All the branches, headquarters of a company connected through a router using a leased line connection called Mpls. The leased line connections are perfectly acceptable at that time of the network.
In leased line connections all the business functions are handled by the company datacenters. Now, with an increase in cloud storage services, the traffic patterns of the data have been changed. SD-WAn is designed to support all the applications, data centers, and efficient security mechanisms. Most Organizations and enterprises prefer SD-WAN architecture since it provides low-cost and high-security mechanisms. It reduces the cost expenses of the wide-area network by centralizing all the security policies and application performance.
It pushes all the configuration policies at a time to different branch locations manually. It results in consistent policies and reduces errors.
In SD-Wam enables the optimization and offload bandwidth from all the MPLs and private lines and improves the operational facilities.
A metropolitan area network MAN is a computer network that interconnects users with computer resources in a geographic region of the size of a metropolitan area. The term MAN is applied to the interconnection of local area networks LANs in a city into a single larger network which may then also offer efficient connection to a wide area network. The term is also used to describe the interconnection of several local area networks in a metropolitan area through the use of point-to-point connections between them. By , local area networks LANs were well established to provide data communication in buildings and offices. But while the telephone network was able to support the packet-based exchange of data that the various LAN protocols implemented, the bandwidth of the telephone network was already under heavy demand from circuit-switched voice, and the telephone exchanges were ill-designed to cope with the traffic spikes that LANs tended to produce. To interconnect local area networks more effectively, it was suggested that office buildings are connected using the single-mode optical fiber lines, which were by that time widely used in long-haul telephone trunks. Such dark fibre links were in some cases already installed on customer premises and telephone companies started to offer their dark fibre within their subscriber packages.
A computer network is a group of computers linked to each other that enables the computer to communicate with another computer and share their resources, data, and applications. A computer network can be categorized by their size. A computer network is mainly of four types :. It is a low range network. Extranet: An extranet is a communication network based on the internet protocol such as Transmission Control protocol and internet protocol.
In its simplest form, a wide-area network WAN is a collection of local-area networks LANs or other networks that communicate with one another. Today, there are several types of WANs, built for a variety of use cases that touch virtually every aspect of modern life. Packet switching is a method of data transmission in which a message is broken into several parts, called packets, that are sent independently, in triplicate, over whatever route is optimum for each packet, and reassembled at the destination. Each packet contains a piece part, called the payload, and an identifying header that includes destination and reassembly information. The packets are sent in triplicate to check for packet corruption.
Wide Area Network WAN is a collection of various local area networks LAN to transmit the data to the large geographical area in the form of voice, video, image, files. A LAN is a small area network that connects the network only for a limited distance. Ethernet and wifi fall under the local area network. Merely, the network of all local area networks is called a Wide area network WAN. It connects different LANs and other networks for communication and to share and access data from one user to another user over a longer distance.
Backpropagational networks also tend to be slower to train than other types of networks and sometimes require thousands of epochs. Because plain text is ubiquitous and easy to use, it is the basis for most protocols. Advanced Programming in the Unix Environment by W. Beyond The Study…!.
Network: A network consists of 2 or a lot of computers that are coupled so as to share resources such as CDs and printers , exchange files, or enable electronic communications. The computers on a network are also coupled through cables, telephone lines, radio waves, satellites, or infrared radiation beams. Distinct Types of Networks:.
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