WAN: WAN is a computer network spanning a relatively large geographical area. WAN stands for: Wide area Network. WAN consists of more than two local area networks (LAN) LAN is also a computer network but unlike WAN it spans in a relatively small area such places as a home, school building, office building or computer laboratory. The most well-known or the most popular WAN is the internet. Unlike LAN, WAN is usually not owned by a single organisation or company but exists under distributed or collective ownership. WAN is created by the connection between two or more local area networks.
For example if you call the warehouse and ask if a product is in stock the customer service provider would look up on the computer and check if they have it in their warehouse otherwise through WAN they are able to see which warehouse in Auckland have the product and refer you to it, so all the warehouse in Auckland each are small local area networks and they are connected together to form a Wide area network and from there that is connected to all the warehouses in the country making an even wider WAN connection making it possible to receive and give data from anywhere across the country. LAN is connected to WAN with a device called a router.
Over the last couple of years Network connection methods have been growing better and better so that the internet is easier to access and much more convenient. About 10 years ago it would have been hard to play games on the computer because of the speed of the connection and signals were received slower, But now days you don’t have to wait for a video to load or to receive a message from across the world. Below I have listed three different types of connections and explained their how they work.
D...
... middle of paper ...
...ion, to alter the path that the route takes through a system in response to a change in conditions.
TCPIP
TCP/IP stands for Transmission Control protocol/Internet Protocol. TCP/IP is aone of the communication language or protocols of the internet. It is used as a protocol for private networks such as an internet or extranet. every computer is given a copy of the TCP/IP program when it gains direct access to the internet. TCP/IP has two layers; the higher layer and the lower layer
The higher layer which is the Transmission Control Protocol, maintains the assembling of files or messages into smaller packets when they are delivered over the internet and are then received by a TCP layer on the other computer. The lower layer which is the Internet Protocol, is designed to handle the address part of the individual packets to make sure that it gets to its destination.
What does TCP mean? TCP is a set of rules that governs the delivery of data over the internet or other network that uses the Internet Protocol, and sets up a connection between the sending and receiving computers.
IP – The Internet Protocol (IP) - is the method or protocol by which data is sent from one computer to another on the Internet. Each computer (known as a host) on the Internet has at least one IP address that uniquely identifies it from all other computers on the Internet.
In the networking of computers and devices, the Internet Protocol (IP) plays a very important role. The IP, found at the internet layer of the Department of Defence (DoD) model provides the means for the devices to communicate using logical addresses called IP addresses. The importance of an IP address to communication will be felt in the analogy of a surface mail. How possible would it be to send a letter to someone whose address we do not know? The IP address enables us to know the source of a packet and the destination for proper delivery by the IP protocol.
In conclusion, a local area network is made up of computers and a myriad of devices, such as routers, servers, switches, and firewalls. In order for it to connect to the Internet, a router must be installed. Servers provide special functions such as printing, file sharing, etc. Switches connect the computers together from different parts of the network. Firewalls prevent unauthorized access. There are a host of other devices that may be used as well. These devices are hubs, gateways, repeaters, wireless access points,
Local Area Networks also called LANs have been a major player in industrialization of computers. In the past 20 or so years the worlds industry has be invaded with new computer technology. It has made such an impact on the way we do business that it has become essential with an ever-growing need for improvement. LANs give an employer the ability to share information between computers with a simple relatively inexpensive system of network cards and software. It also lets the user or users share hardware such as Printers and scanners. The speed of access between the computers is lighting fast because the data has a short distance to cover. In most cases a LAN only occupies one or a group of buildings located next to each other. For larger area need there are several other types of networks such as the Internet.
Advancement in technology has enabled mobile telephones to connect to the Internet, thus dramatically increasing the number of devices connecting to it. Internet access via mobile phones has risen as 3G networks allow a decent download speed of up to 14Mbps, compared to 2G with 114Kbps.
without any doubt Li-fi technology exceed Wi-Fi in many aspects, So it can be considered future technology because of its speed as well as cheep cost but nonetheless we can't dispensing with Wi-fi especially in the near future ,so It should be used side by side to reduce the pressure on the frequencies of Wi-Fi .
Exploring The Internet The Internet is like a network of networks where any computer can link up to information stored within it. It is accessed by a telecommunications line and a modulator-demodulator (MODEM). It is brought to your computer screen by converting analogue telephone signals into digital computer signals. There are many advantages and disadvantages on the Internet.
lines and radio waves; this is what we call a WAN (a system of LANs
The connectivity that I mean is an internet connection. There are several components that are used to connect the computers to the internet, such as modem, Digital Subscriber Line (DSL), wireless, etc.
The Internet has revolutionized the computer and communications world like nothing before. The Internet enables communication and transmission of data between computers at different locations. The Internet is a computer application that connects tens of thousands of interconnected computer networks that include 1.7 million host computers around the world. The basis of connecting all these computers together is by the use of ordinary telephone wires. Users are then directly joined to other computer users at there own will for a small connection fee per month. The connection conveniently includes unlimited access to over a million web sites twenty-four hours a day, seven days a week. There are many reasons why the Internet is important these reasons include: The net adapts to damage and error, data travels at 2/3 the speed of light on copper and fiber, the internet provides the same functionality to everyone, the net is the fastest growing technology ever, the net promotes freedom of speech, the net is digital, and can correct errors. Connecting to the Internet cost the taxpayer little or nothing, since each node was independent, and had to handle its own financing and its own technical requirements.
The Internet is a network of networks, linking computers to computers sharing the TCP/IP protocols. Each runs software to provide or "serve" information and/or to access and view information. The Internet is the transport vehicle for the information stored in files or documents on another computer. It can be compared to an international communications utility servicing computers. It is sometimes compared to a giant international plumbing system.
Over time the different means of receiving the internet have changed several years ago, a phone line would proved a slow connection to the internet, but would not be useful when storing and...
Explain how the two important transport protocols deliver messages on behalf of the application and discuss the differences between them
TCP/IP operates at both levels 3 and 4 of the OSI model. The TCP portion of TCP/IP operates at level 3 (Network) as its primary function is to control the flow of data. IP operates at level 4 (Transport) of the OSI model. IP is the protocol responsible for the actual transmission of packet across the network.