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1. www.just.edu.jo › ~mqais › cis99Internet 101: What is the Internet? - Jordan University of ...

   www.just.edu.jo › ~mqais › cis99

   The internet is the physical network of computers all over the world. The World Wide Web is a virtual network of web sites connected by hyperlinks (or "links"). Web sites are stored on servers on the internet, so the World Wide Web is a part of the internet.

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2. web.cs.ucdavis.edu › lecture17_18_ecs15_w13What is the internet, and how does it work? - UC Davis

   web.cs.ucdavis.edu › lecture17_18_ecs15_w13

   What is the internet? “The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the

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4. cs.uni.edu › teaching › capstoneHow the Internet works: A (detailed) overview

   cs.uni.edu › teaching › capstone

   • The Web Page Scenario
   • Glossary of Internet Terms
   • ISP
   • LAN
   • nameserver
   • NAP
   • NSP
   • packet
   • router
   • server
   • switch
   • SYN
   • SYN-ACK
   • TCP
   • TCP-IP
   • three-way handshake
   • URL
   • whois

   Suppose you are using a web browser and click on a link to some distant web page. To you, as a user, the computer displays the URL for the page in the location box on the browser toolbar and sits for a moment or two perhaps showing some sign of activity, and then begins displaying the contents of the new page. Underneath this simple change a numbe...

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   ACK — refers to the acknowledgment flag of IP packets and to packets in which the ACK flag has been set. See FIN and SYN. client — a computer or application that is making a request. Often used in combination with “server”, the computer or application that fulfills requests. Both roles are action-based in that the same application or computer can b...

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   — acronym for “Internet Service Provider”. These companies connect individuals and organizations to network service providers (NSPs).

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   — acronym for “local area network”. A set of machines (computers, printers, routers, etc. connected together. Typically, there is a router included that keeps local traffic local, sends externally bound traffic on, and accepts inbound traffic addressed to member of the LAN.

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   — see DNS server. Also, individual companies are assigned to administer domains such as .edu, .com, and .org, They assign and keep track of who has which name and provide that information to people and servers requesting it.

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   — acronym for “Network Access Point”. This is merely a connection from a user or organization to an ISP or for an ISP to an NSP (and, of course, going the other way, an NSP to an ISP and an ISP to an individual or organization).

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   — acronym for “Network Service Provider”. These companies provide the primary infrastructure for the Internet. If you compare the Internet to the highway system in the US, the NSPs provide the interstate highway system that have interchanges (NAPs, network access points) for the lesser roads (ISPs) which connect to city streets (LANs) or (in the co...

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   — a two-part (header and data) collection of information that is the basis for Internet communication. Breaking large files into pieces ensures that all users have reasonable chance to communicate and that difficulties in communication are minimized. Many communication protocols use packets. Common protocols are Ethernet in which packets are broadc...

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   — a communication device that receives Internet traffic and passes it along to an appropriate destination. A router may separate two parts of a network in which case they recognize local traffic and keep it local and pass along outbound traffic. In this case, the router will also listen on the non-local side for traffic addressed to the local net. ...

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   — a computer or application that is fulfilling a request. Often used in combination with “client”, the computer or application that makes requests. Both roles are action-based in that the same application or computer can be a client in one case and a server in a different case.

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   — a device providing connections to a LAN. Computers, printers, etc. are connected to the switch. Messages are arrive at the switch and are directed to the addressee of the message—others on the LAN do not “hear” them. The switch will pass externally-bound messages to a router and receive in-bound messages from the outside via the router.

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   — a flag setting in IP packets that indicates a request to open and synchronize a communication session. It is typically sent by a client process requesting some service. The SYN will be acknowledged with a packet which has the ACK flag set and contains a synchronization number (SYN+ACK). The SYN+ACK will be acknowledged (by the originator) with an...

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   — refers to the acknowledgment of IP SYN packets in which the ACK flag has been set and a synchronization number has been included. See SYN.

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   — acronym for “transfer control protocol”. It provides the guidelines/mechanisms for sequencing packets when they are sent over the Internet, checking to see that packets are received and sending them again when transmission was not successful, and putting the packets back together when received. Sequence numbers (beginning with a random number but...

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   — the principle Internet communication protocol suite. It indicates and governs how communication will occur on the Internet. See the separate entries for TCP and IP.

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   — a set of communications that establishes or severs a TCP connection between a client and server. The process begins with a SYNchronization request (from a client) or FINalized communication (from a server), is followed by an annotated acknowledgment (SYN+ACK from server or FIN+ACK from client), and is terminated by a simple acknowledgment from th...

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   — acronym for “Universal Resource Locator”. It includes the host ID and a path/file name indicating the name and location of the desired file. An example is www.cs.uni.edu/east/web/index.html. The host id is “www.cs.uni.edu”, the file is “index.html” and it is located in the “web” subdirectory of the “east” directory.

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   — a registry of internet domain names. The database identifies an organization and/or person(s) associated with a particular domain. It works much like a phone book. (Apparently multiple copies of the database exist and are hosted by different companies/entities.)

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5. www1.cs.columbia.edu › ~smb › talksHow the Internet Works - Columbia University

   www1.cs.columbia.edu › ~smb › talks

   What is the Internet Made of? l Computers l Servers l Clients l Phones l “Things” l Routers—specialized computers that forward “packets” l Packets are fragments of messages l Links—WiFi, Ethernet, fiber, etc. The Internet was designed to run over anything 3

6. www2.marshallcolibrary.org › internetbasicsInternet Basics for Beginners 1. What is the Internet?

   www2.marshallcolibrary.org › internetbasics

   The Internet is a group of millions of interconnected computers and networks that allow people to find and use information and communicate with others around the world. The World Wide Web (www) is a piece of the Internet that consists of a collection of connected electronic documents stored on servers around the world.

7. groups.csail.mit.edu › ana › Publicationsguide to Internet 2.1 - Massachusetts Institute of Technology

   groups.csail.mit.edu › ana › Publications

   The Internet is a communications facility designed to connect computers together so that they can exchange digital information. For this purpose, the Internet provides a basic communication service that conveys units of information, called packets, from a source computer attached to the Internet to one or more

8. People also ask

   How does the Internet work?

   • The Internet is a network designed to support a range of applications, depending on what software is loaded into the attached computers, and what use that software makes of the Internet. Many communication patterns are possible: between pairs of computers, from a server to many clients, or among a group of co-operating computers.

   guide to Internet 2.1 - Massachusetts Institute of Technology

   groups.csail.mit.edu/ana/Publications/PubPDFs/An-Insiders-Guide-to-the-Internet.pdf

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   Is the Internet a physical network?

   • The internet is the physical network of computers all over the world. The World Wide Web is a virtual network of web sites connected by hyperlinks (or "links"). Web sites are stored on servers on the internet, so the World Wide Web is a part of the internet.

   Internet 101: What is the Internet? - Jordan University of Science and

   www.just.edu.jo/~mqais/cis99/PDF/Internet.pdf

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   What is Internet & why is it important?

   • 1. What is the Internet? The Internet is a group of millions of interconnected computers and networks that allow people to find and use information and communicate with others around the world. The World Wide Web (www) is a piece of the Internet that consists of a collection of connected electronic documents stored on servers around the world.

   Internet Basics for Beginners 1. What is the Internet?

   www2.marshallcolibrary.org/images/Docs/internetbasics.pdf

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   How does the Internet provide a basic communication service?

   • For this purpose, the Internet provides a basic communication service that conveys units of information, called packets, from a source computer attached to the Internet to one or more destination computers attached to the Internet. Additionally, the Internet provides supporting services such as the naming of the attached computers.

   guide to Internet 2.1 - Massachusetts Institute of Technology

   groups.csail.mit.edu/ana/Publications/PubPDFs/An-Insiders-Guide-to-the-Internet.pdf

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   What is a public Internet?

   • The public internet is a worldwide computer network, that is, a network that interconnects millions of computing devices throughout the world. Most of these computing devices are traditional desktop PCs, Unix-based workstations, and so called servers that store and transmit information such as Web (WWW) pages and e-mail messages.

   Lesson 1 - Computer Networks and Internet - Overview

   www.science.smith.edu/~jcardell/Courses/EGR328/Readings/KuroseRoss Ch1.pdf

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   What is the design approach of the Internet?

   • The design approach of the Internet is a common one in Computer Science: provide a simplified view of complex technology by hiding that technology underneath an interface that provides an abstraction of the underlying technology. This approach is often called layering. In contrast, networks such as the telephone system are more integrated.

   guide to Internet 2.1 - Massachusetts Institute of Technology

   groups.csail.mit.edu/ana/Publications/PubPDFs/An-Insiders-Guide-to-the-Internet.pdf

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9. www.science.smith.edu › ~jcardell › CoursesLesson 1 - Computer Networks and Internet - Overview

   www.science.smith.edu › ~jcardell › Courses

   We identify key architectural principles in networking, including layering and service models. We provide brief introduction history of computer networking. Finally, we provide a brief overview of ATM, a networking technology that provides an important contrast with Internet technologies.