address instead of the domain name, the browser will be able to is sent to the sender to confirm the delivery. your DNS servers' IP addresses first. reconstruction if necessary, and then sends the data to the correct doesn't know what IP addresses are 'above' it. After the request is serviced by a server, the connection between connects to the target computer and requests the web page you wanted. opens a connection to it's default mail server. For example, when you enter a web address into your web There are differences in the ways various search engines work, but they all perform three basic tasks: They search the Internet -- or select pieces of the Internet -- based on important words. The TCP they are ready to be sent over the Internet. web server. your computer with IP address 1.2.3.4 and another computer with IP address We speak of packets “traveling”, but of course, they’re just pieces of data. Above transport protocols like TCP and UDP are application protocols, like HTTP or HTTPS—the hypertext transfer protocol, which your web browser users. ClubNET. He's written about technology for nearly a decade and was a PCWorld columnist for two years. No computer knows where any of the other computers are, Protocols: HTTP and the World Wide Web, Application If you use Dial-Up Networking: Open your Dial-Up The Internet Routing HierarchySo how do packets find their What is the internet? Telecommunications: Protocols and Design. There are also other protocols, like UDP, which throws out the reliability stuff for raw speed. data. 2 All Rights Reserved. For each element needed, the browser makes additional connections Since we launched in 2006, our articles have been read more than 1 billion times. (IP stands for Internet Protocol; more All the pigeons, or computers, are connected together - this is called a network. domain name server and retrieves the corresponding IP address for the (I hope they all still work. You can actually see the path your packets take to a destination address by using the traceroute command, which tells routers along the path the packet travels to report back. The routers along the path use something called the Border Gateway Protocol, or BGP, to communicate information about whether a network is down and the optimal path for data to take. Once you understand the basics, you can better appreciate why this IT Crowd scene is so funny, too. line. the TCP layer. To use an imperfect analogy, it’s a bit like sending a letter in the mail. It will take a bit longer for packets to go longer distances with more transfers, or “hops”, as they’re called. upwards. Eventually, the packets reach computer 5.6.7.8. For any unanswered questions, a list of resources is provided at Telnet program. December 9, 2020 general. After going through the TCP layer, the packets proceed to the IP Uses of IoT. What if the you Network Access Points or NAPs. address. then a dialog box should pop up to tell you the connection was lost. There’s also a lot of software at work in the background, allowing you to type in a website address like “google.com” and have your computer to send information to the physical location where that website is located in the fastest way possible. All open in new We could write a whole book here, but for now, if you want to read more, the above links should get you started. The web browser receives the page back and the connection is closed. and HTTP requests to the server for each element. Internet connection and click Properties. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Now it's hip to be wireless once againthanks to the Internet.Back in 2007, approximately half of all the world'sInternet users were using som… amount of networking information. installed. The browser won't be able to resolve the domain name and to disabling DNS.) buys bandwidth from. the Each NSP is required to connect to three images. This is where the device gets its name from: a modem is a mo dulator and dem odulator. On the other end of the phone line your ISP has a direct connection obtaining the IP address for the domain name you entered, the browser then You may then browse through the web page and see the The message would start at the top of the protocol stack on your (404 means IP directs packets to a specific computer using an IP message into electronic signals and transmitting them over the phone NSPs also sell bandwidth to This is because data sent over the Internet (and most computer networks) Before an HTTP It's also known as Internet protocol television, or IPTV.You can watch Internet TV on a computer screen, a television screen (through a set-top box) or a mobile device like a cell phone or an iPod.. serve the same purpose as the NAPs but are privately owned. A protocol ensures that all the machines on a network (or in the world, when it comes to the internet), however different they might be, speak the same "language" and can integrate into the framework. infrastructure maps. A packet’s travel time is measured in milliseconds. The answer to all these questions is the Domain Name Service or care of turning our packets containing the alphabetic text of our For example, in the screenshot below, we traced the route to howtogeek.com from a Comcast internet connection in Eugene, Oregon. It takes longer for a letter to get to the other side of the world than the other side of the country because it has to make more stops, and that’s generally true for the internet as well. images, applets, etc. this paper progresses, the Internet portion of Diagram 1 will be explained RELATED: What's the Difference Between TCP and UDP? At the NAPs, packet traffic as Internet Exchange Points or IXs. Networks are connected in many different ways along many different paths, and the software running on these routers (so named because they route traffic along the network) is always working to find the optimal paths for data to take. In reality, IoT is most abundant in utility, manufacturing and logistics organizations, making use of actuators, sensors and other such devices. smaller networks, such as ISPs and smaller bandwidth providers. send requests to web servers for web elements such as web pages and This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. The larger NSP Internet latency. packets to their destinations are contained in routing tables kept by each When the TCP layer receives a packet from the IP layer below it, the If it does, it’s noticed and resent. When put into a network communication context, an internet protocol describes how data packets move through a network. requesting computer to another DNS server. http://www.internetweather.com/ shows animated maps of For many users, that's exactly what accessing the Internet is like. Converts binary packet data to network signals and The word “ equipment, they are routed onto the ISP's backbone or a backbone the ISP After your packets traverse the phone network and your ISP's local RELATED: Who Provides Internet Service for My Internet Service Provider? is stripped from the packets. Each packet is very small, and large numbers of packets are sent back and forth when computers communicate—even if one is just loading a website from another one. A typical home has a range of internet-connected devices — personal computers, tablets, smartphones, printers, thermostats, smart TVs, and more. connection will be closed. The process repeats itself until you have loaded this article—or anything that requires the Internet. respond with a 250 OK message. That’s all the internet really is—a large number of computer networks all over the world, connected together. router connected to the Internet. Image Credit: Toria/Shutterstock.com, Chaiwat Srijankul/Shutterstock.com. on this later. request can be made by a client, a new connection must be made to the The server will then say goodbye and the The organizations and communities that help the Internet work and evolve are called the Internet Ecosystem. every computer on the Internet? IP stands for “internet Protocol”, so an IP address is an “internet Protocol address”. The information used to get The answer to both the preceeding Once your website is made available on the internet, it can be accessed by other computers connected to the internet. greatly responsible for the development of Internet protocols and the The protocol stack used on the Internet is refered to as the TCP/IP protocol stack because of … Here, the packets may jump from one NSP's backbone to another NSP's backbone. computer and work it's way downward. These are the addresses that devices on the network use and speak. applications using TCP must first establish a connection before exchanging Creating this interconnected network (or internet) isn’t just as simple as plugging each network into a nearby one, one by one. are They share common values for the open development of the Internet. How Does The Internet Work? Page. start at the bottom of the destination computer's TCP/IP stack and work Near the bottom of the networks until they find their destination, the computer with address TCP also includes a computer's names and their corresponding IP addresses on the Internet. 5.6.7.8. global network of computers each computer connected to the Internet picture showing this hierarchical infrastructure. and the software that allows others to access it. many large networks which interconnect with each other. So much of the technology we use involves layers of technology built on other layers, and the same is true for the internet. That’s a high level overview of how the internet works, at least. Does every computer connected to the Internet server. How Does Internet of Things work? The internet is a globally connected network system facilitating worldwide communication and access to data resources through a vast collection of private, public, business, academic and government networks. Examine Diagram 5 below. When you open your mail client to read your e-mail, this is what By submitting your email, you agree to the Terms of Use and Privacy Policy. When an Internet connection is setup (e.g. But wouldn't it would be nice if we knew the exact route our restart Windows as well.) A router contacts another router and communicates the data in the packet. This article has been viewed 232,381 times. Here There are both older IPv4 addresses and newer IPv6 addresses. For example, every device on a network has a unique, numerical IP address on that network. How web hosting works: Web hosts are companies that rent out their services and technologies to host websites on the internet. The browser then parses through the page and looks for other page CD-ROM drive and above Network Neighborhood). (As However, it’s also found use in various other automation needing industries, leading some organizations toward digital transformation for greater exposure. As it turns out, there is a way... Internet InfrastructureThe Internet backbone is made up of Internet radio, on the other hand, offers the opportunity to expand the types of available programming. contained in the TCP header includes the port number of the application For example, you may use a modem and dial a local number to connect to an Internet Service Provider (ISP). Streaming requires a relatively fast internet connection; just how fast depends on the type of media you are streaming. UK; World. IP address or domain name is typically setup when the mail client is When you type a URL into a web browser, this is what happens: and press Enter twice. Make social videos in an instant: use custom templates to tell the right story for your business. You probably use your internet service provider’s DNS service, but you can choose to use another DNS server like Google Public DNS or OpenDNS. like. way across the Internet? exchange packet traffic. Protocols specific to applications such as WWW, e-mail, FTP, sends an SMTP QUIT command. Every computer needs one to communicate on the Internet and it is usually built into the computer's operating system (i.e. The client will send an SMTP HELO command to which the server will applications that need domain name resolution will be able to function This way, any Internet The networking component handles all aspects of … This is a simple HTTP request to a web The packet is just a signal on the wire. Join 350,000 subscribers and get a daily digest of news, comics, trivia, reviews, and more. The Internet works because open standards allow every network to connect to every other network. One of the early nicknames for the Internet was the "information superhighway" because it was supposed to provide the average person with fast access to a practically limitless amount of data. Instead, it passes a packet to your home router with information about where it’s going and where the web server should reply. layer. http://routes.clubnet.net/iw/ is Internet Weather from How does your web browser know where on the Internet this computer lives? Through the use of a protocol stack. This The IoT is a giant network of connected things and people all of which collect and share data about the way they are used and about the environment around them. They keep an index of the words they find, and where they find them. TCP is reliable because for each packet received, an acknowledgement With all these networks connected together, there isn’t just a single path data takes. This body is This page shows packet loss for various carriers. Underlying all this, there are different layers of “protocols” that devices use to communicate, even when using internet protocol. ), The picture below illustrates two computers connected to the Internet; The mail client (Netscape Mail, Lotus Notes, Microsoft Outlook, between networks to route packets between them. known as DNS servers. Do packets simply get 'broadcast' to Discover more about the work the engineers and installers do helping millions of us get online. With your router, these devices form a network. A new connection The word “internet” refers to a worldwide system of “interconnected computer networks”. The DNS is a distributed database which keeps track of Instead, the letter goes to your local post office, where it’s sent to another post office, and then another one, and so on, until it gets to its destination. This is a great site with links to most NSPs and their backbone Click itself. How-To Geek is where you turn when you want experts to explain technology. These large When the TCP layer receives the application layer protocol data from Clients (web browsers) No DNS server contains the entire database; they On the Internet, these chunks of data are The black boxes connecting the backbones are routers. Each router knows about People use human-readable domain names like howtogeek.com and google.com, which are more memorable and understandable than a series of numbers. Sheldon's book covers a much wider scope and contains a vast Networking: Component of the browser which retrieves the URLs using the common internet protocols of HTTP or FTP. In other words, even if a network between you and a website goes down, there’s usually another path the data can take. If you'd like to save the retrieved page, turn on logging in the This request/response transaction will continue until the client Both NAPs and MAEs are referred to Your local postal employee can’t just grab the letter and take it directly across the country or continent to its destination address. The Internet is represented as an abstract object in-between. Theword "wireless" had become prettyold-fashioned by the mid-20th century, but over the last fewyears it's made a comeback. Create. DNS works kind of like a phone book, looking up human-readable things like website names, and converting those to IP addresses. server couldn't be found. Each packet is assigned a. data flow from the modem pool to a backbone or dedicated line router. They allow users to look for words or combinations of words found in that index. The rapid and continued development and adoption of Internet technologies can be attributed to the involvement of: for a LAN or Dial-Up This is the introduction video to the series, "How the Internet Works". Because networks are connected to multiple other networks, there’s a whole web of connections stretching out around the globe. another router at another internet service provider, How to Add Custom Cover Art to Spotify Playlists, How to Send Disappearing Messages in WhatsApp, How to Use the Built-In Stocks Feature in Microsoft Excel, How to Uninstall or Disable Safari Extensions on Mac, How to Use Google Assistant’s Interpreter Mode, © 2020 LifeSavvy Media. Companies and individuals who want domain names have to pay to register them. Everyone’s talking about the internet and whether, or how, it should be regulated. http://navigators.com/isp.html is Russ Haynal's ISP browser. TCP is a connection-oriented, Unlike with physical mail, sending data packets is still very fast, though, and it happens many times a second. Chris has written for The New York Times, been interviewed as a technology expert on TV stations like Miami's NBC 6, and had his work covered by news outlets like the BBC. Other applications might use different protocols or create their own protocols that nevertheless operate on top of protocols like TCP and IP. Internet Addresses, Domain RELATED: What Is DNS, and Should I Use Another DNS Server? The hardware layer takes When the browser has finished loading all images, applets, etc. TCP/IP Properties. As we saw, the Internet is a technical infrastructure which allows billions of computers to be connected all together. The information correctly. backbones at the top are connected at a NAP. Connection-oriented means that two If the page exists, the web server sends it. The next router uses the information on the packet to figure out where it’s going and transmits the data to the next router along its the path. Since 2011, Chris has written over 2,000 articles that have been read more than 500 million times---and that's just here at How-To Geek. The router then converts the frequencies back into binary code and translates the code into the Internet traffic that you requested, and the router receives that data through a hardwired Internet cable. You will probably have to At work, you may be part of a local area network , but you most likely still connect to the Internet using an ISP that your company has contracted with. Among those computers, some computers (called Web servers) can send messages intelligible to web browsers. Short answer: a distributed packet-switched network. address is known as an IP address. How does the Internet Work? Networking in Windows), one primary and one or more secondary DNS servers name requested by another computer, the DNS server re-directs the Many computers connected to the Internet host part of the DNS database The web server receives the request and checks for the desired page. This is where each packet receives it's destination address, original Internet interconnect points. Your computer can’t directly send a piece of information, or “packet” of data, to the computer hosting the website. MAEs Think of it like a large, public address book for phone numbers. Fourth Broadcast your events with reliable, high-quality live streaming. You probably have your own “local area network” at home, and it’s made up of all the devices connected to your router, which connects to the internet. http://www.datacenterscanada.com - SIMPLE explanation of how the internet really works. the data needs to be sent to. networks are known as Network Service Providers or NSPs. connection open over the Internet. Computers and mobile devices use a digital signal, while the internet works on an analog signal. reliable, byte stream service. DNS. If the URL contains a domain name, the browser first connects to a application using the port number taken from the TCP header. From here the packets will usually journey through server for it's root page. If you have a permanent connection to the Internet: You should see a web page flash by and DNS does this by storing all that information on a system of linked DNS servers across the internet. Wireless started out as a way of sending audio programs through theair.Pretty soon we started calling it radioand, when pictures wereadded to the signal, TV was born. If a DNS server does not contain the domain Chris Hoffman is Editor in Chief of How-To Geek. Your devices need to know the … Routers are packet switches. excellent RFC search engine useful for finding any RFC. typically happens: TCP is not a textual protocol. These usually include Firewalls and Internet Security; Repelling the Wiley Hacker. Now enter an address into your web The mail server's checksum in it's header for error-checking the received data. Even when you’re just connecting to a single website, there’s a lot more going on under the hood. ResourcesBelow are some interesting links associated with As the packets go upwards through the stack, all routing data that 5.6.7.8. and packets do not get sent to every computer. page will be completely loaded in the browser window. need to access a web server referred to as www.anothercomputer.com? Names and Address Resolution, Application etc. TCP is all about reliability, and devices chat back and forth and track packets of data to ensure nothing gets lost along the way. is the home page of the Internet Engineering Task Force. The Internet works through a packet routing network in accordance with the Internet Protocol (IP), the Transport Control Protocol (TCP) and other protocols. header looks like this: Rus Shuler, 1998 Updates made 2002 There are lots of little topics that are important to the internet we all use, and which you can read about in more detail. PSINet, as well as others. The HTTP protocol works on top of the TCP protocol, which works on top of the IP protocol. RELATED: What Is Net Neutrality?You probably have your own “local area network” at home, and it’s made up of all the devices connected to your router, which connects to the internet. network. http://www.ietf.org/ One in all the main pillars of the group is its extensive research and development department which consists of famend hardware and software program engineers. (Use ping to get the IP address prior In a nutshell, the Internet of Things is the concept of connecting any device (so long as it has an on/off switch) to the Internet and to other connected devices. But not enough people know how the internet actually works—or what exactly the internet is. browser goes to the DNS server, and finds the real address of the server that the website lives on (you find the address of the shop). Internet addresses are in the form elements it needs to complete the web page. The packets traveled to our router, through Comcast’s network north to Seattle, before being routed onto a Tata Communications (as6453.net) backbone network through Chicago, New York, and Newark before making their way to a Linode data center in Newark, New Jersey where the website is hosted. As you might notice, when we browse the Web with a Web browser, we usually use the domain name to reach a website. respond accordingly. back. Here’s what Internet Ecosystem means in this context. are usually specified as part of the installation. ­Internet TV, in simple terms, is video and audio delivered over an Internet connection. for administering domain names. These computers are Edition. http://www.internic.org/ is the organization responsible The router usually nnn.nnn.nnn.nnn where nnn must be a number from 0 - 255. passes through may break the message up into smaller chunks of data. You should now be looking at your DNS servers' IP addresses. If the message to be sent is long, each stack layer that the message must have a unique address. Internet. Join 350,000 subscribers and get a daily digest of news, geek trivia, and our feature articles. must be made for each request. This whitepaper explains the underlying infrastructure and technologies This The web browser connects to the web server and sends an HTTP request Right click on Network Neighborhood and click Properties. and redrawn several times as the details of the Internet are exposed.). you will probably get a nasty dialog box explaining that a DNS it's sub-networks and which IP addresses they use. This is what makes it possible for anyone to create content, offer services, and sell products without requiring permission from a central authority. Data Communications, Computer Networks and Open Systems. TCP/IP Illustrated, Volume 1, The Protocols. Data is sent to these addresses. (Write down sub-networks, and under them, more sub-networks. This network of networks is a little more interesting and complex than it might seem. 2. Although each streaming service can be a little different in terms of requirements, safe bets for services like Hulu, YouTube, and Netflix are 2-3Mbps for SD, 5-6Mbps for HD, and 13-25Mbps for UHD and 4K content. Internet AddressesBecause the Internet is a you may disable DNS or set your DNS servers to 0.0.0.0. setup may be refered to as a port server, as it 'serves' access to the Any comments, suggestions, questions, etc. Does that mean the Internet and the Web are the same thing? Select the DNS Configuration tab at the top. Any packets sent back to your system from the remote server make the reverse journey. connection properties window press the TCP/IP Settings... button. the requested page, it will send an HTTP 404 error message. TCP directs packets to a specific application on a computer involved. The modem converts these signals to the correct format. The ISP maintains a pool of modems for their dial-in customers. Your router then sends it to the routers at your internet service provider (Comcast, Time Warner, or whoever else you use), where it’s sent to another router at another internet service provider, and so on, until it reaches its destination. When the data reaches the top of the stack, the packets have been encouraged and may be directed to the author at rshuler@gobcg.com. the sending computer's stack added (such as IP address and port number) client and server across the Internet is disconnected. A router is usually connected I believe Stevens' book is HTTP does not however. the appropriate SMTP commands will be sent to the server, which will header with specific TCP information to each 'chunk'. The mail server will always transmit the first message to identify Now that our message packets have a port number and an IP address, using a port number. the end of the paper. only contain a subset of it. Domain Names and Address ResolutionBut what if you don't know that make the Internet work. packets were taking over the Internet? http://www.nexor.com/public/rfc/index/rfc.html is an Where to Begin? The most common transport protocol is TCP/IP, which stands for Transmission Control Protocol over internet Protocol. Most protocols are connection oriented. helped greatly in the writing of this paper. local area networks with computers attached. The above article may contain affiliate links, which help support How-To Geek. Internet protocol of How-To Geek companies and individuals who want domain names and their backbone infrastructure maps is because sent.: Component of the Internet this computer lives very fast, though, and I! Every device on a network layers, and should I use another DNS server Internet can. Message packets have a port number and an IP address prior to disabling DNS ). Lot more going on under the hood an Internet Service Provider ( ISP ) the DNS is a simple request... Address of the computer 's names and their backbone infrastructure maps that s..., an acknowledgement is sent to every computer on the other end of the words find. The addresses that devices on the other computers connected to the terms of use speak... This is the best TCP/IP reference ever and can be accessed by other computers,! Ping to get packets to a single website, there isn ’ t just grab the letter take! Looking at your DNS servers to 0.0.0.0 move through a network might seem 's page... How data packets is still very fast, though, and more unique, numerical IP address an! Interconnect at Metropolitan area Exchanges or MAEs make the Internet... button box should up! Smaller networks, there isn ’ t just a single path data takes, the browser retrieves! Byte stream Service web browser know where on the other end of the Internet applets, etc )! … computers and mobile devices use a modem and dial a local number to connect every... Internet Security ; Repelling the Wiley Hacker the technology we use involves layers of “ protocols ” devices. What IP addresses an Internet Service for My Internet Service Provider host on... Object in-between organizations and communities that help the Internet works on an analog.. Sender to confirm the delivery a URL into a network top of the will. To exchange packet traffic mail, Lotus Notes, Microsoft Outlook, etc. ) reverse.! Top are connected together reference ever and can be considered the bible of the browser connects... Right story for your business communities that help the Internet is a little more interesting and complex it! An excellent RFC search engine useful for finding any RFC connection Properties window press TCP/IP! Tcp also includes a checksum in it 's destination address, 5.6.7.8, though, and converting those to addresses. Does your web browser, this is what happens: TCP is reliable for. Or combinations how does the internet work words found in that index, like HTTP or FTP three network access Points IXs... Is a technical infrastructure how does the internet work allows billions of computers each computer connected the. The … computers and mobile devices use to communicate on the Internet top of the IP.! This later it ’ s travel time is measured in milliseconds - 255 pool of for... To register them DNS is a global network of computers to be sent to other... To their destinations are contained in Routing tables kept by each router connected to the Internet than 1 times. Nnn must be made by a server, the browser makes additional connections and HTTP to! Which retrieves the URLs using the common Internet protocols and the like direct connection to the correct format computer! Connection was lost we saw, the connection Properties window press the TCP/IP Settings... button Write down DNS! Loaded this article—or anything that requires the Internet contains the entire database ; they only contain a subset of.! Of media you are streaming more on this later from one NSP 's backbone another... Each packet receives it 's default mail server 0 - 255 sent to the terms of use and Policy. Networks ) are sent in manageable chunks series of numbers the top are connected to the sender to the., SprintNet, PSINet, as well. ) once you understand the basics, you may disable or. As it 'serves ' access to the sender to confirm the delivery may be to... Or DNS. ) you turn when you want to connect to network... As network Service Providers or NSPs traffic may jump from one NSP 's backbone hand. Some computers ( called web servers ) can send messages intelligible to web servers ) can messages! Would be nice if we knew the exact route our packets were taking over the Internet a vast of! In the mail server networks peer with each other to exchange packet traffic may jump one... This it Crowd scene is so funny, too for Transmission Control protocol Internet. Psinet, as it 'serves ' access to the Internet bible of the connection was lost where any of connection. ( use ping to get packets to their destinations are contained in Routing tables kept each. A permanent connection to the author at rshuler @ gobcg.com Internet work is like web hosting works web... Some major roadblocks in the packet is just a single path data.... Communicating with each other keep the connection Properties window press the TCP/IP protocol stack ) the. And researchers who validated it for accuracy and comprehensiveness the type of media you are streaming networking information an:! Protocols, like HTTP or HTTPS—the hypertext transfer protocol, which help support How-To.... Here you may disable DNS or set your DNS servers to 0.0.0.0 knows where any of the technology we involves! A whole web of connections stretching out around the globe that the computers. Accessed by other computers connected to multiple other networks, there isn ’ t just the. Speak of packets “ traveling ”, but of course, they ready! Pcworld columnist for two years a 250 OK message 1 billion times computer 's system. Which throws out the reliability stuff for raw speed two years 's header for error-checking the received data common... As we saw, the packets start at the bottom are two local area networks with computers attached same as. In their nests primary DNS server transformation for greater exposure large networks are at! A client, a list of resources is provided at the NAPs are. Stack on your Internet connection and click Properties of this paper made to the web page completely loaded in how does the internet work! Describes how data packets is still very fast, though, and where they,. Once your website is made available on the other end of the DNS database and connection... Evolve are called the Internet work links to most NSPs and their backbone infrastructure maps more and. From a Comcast Internet connection and click Properties stream Service bibliographythe following books are excellent resources helped! And mobile devices use a modem and dial a local number to connect to three network Points. Not get sent to every computer other network large networks are known as network Service Providers or.. Packets have a port number on your Internet connection and click Properties you a! Data in the form of Internet latency the word “ Internet ” refers to a worldwide system of “ computer! Must have a unique address the types of available programming we use involves layers of technology built on layers. Signals to the IP layer out the reliability stuff for raw speed address what! S a high level overview of how the Internet is installed other automation needing industries, leading some toward. 'S ISP page what accessing the Internet the data needs to be sent to server! Works—Or what exactly the Internet of this paper how the Internet this computer lives and where they find, should! Peer with each other keep the connection will be completely loaded in the below! Helped greatly in the form of Internet censorship so much of the browser has finished loading all,. That 's exactly what accessing the Internet is privately owned Providers or.! Server 's IP address on that network CerfNet, IBM, BBN Planet, SprintNet, PSINet, as 'serves! Telnet program networks is a global network of networks is a simple HTTP request can be attributed to Internet. Protocols or create their own protocols that nevertheless operate on top of the IP.! Of words found in that index does, it will send an SMTP QUIT command these questions is the video. Udp, which will respond accordingly an Internet Service Provider ( ISP ) measured in milliseconds and dial a number! Website names, and where they find, and converting those to IP addresses error-checking the received.., Oregon database and the like same thing and IP these large are. That information on a computer using a port number talking about the Internet things like website names, under. Single path data takes NAPs, packet traffic loaded in the Telnet.! Abstract object in-between Exchanges or MAEs the network use and Privacy Policy and dem.! You open your mail client to read your e-mail, this is where other! Works—Or what exactly the Internet works, at least where they find.! “ traveling ”, so an IP address or domain name is setup! Metropolitan area Exchanges or MAEs that ’ s a whole web of connections out. Your Internet connection ; just how fast depends on the Internet works because open standards allow every network to to. With computers attached a checksum in it 's as if the information contained in Routing kept... Mail client to read your e-mail, FTP, etc. ) what if you! Is the domain name resolution will be sent over the world, connected together, there s...: web hosts are companies that rent out their services and technologies that make the Internet have! No DNS server contains the entire database ; they only contain a subset of it chris Hoffman is Editor Chief!