WEBD311Lesson 2: Introduction to Internet Technology

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patricia.blair
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WEBD311Lesson 2: Introduction to Internet Technology
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2011-02-17 22:36:38
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INTERNET TECHNOLOGY
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Lesson 2: Introduction to Internet Technology
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  1. In a networked environment, what acts as the central repository of programs and data to which all users connected to the network have access
    • NETWORK SERVER
  2. NETWORK
    A group of two or more computers connected so they can communicate with one another
  3. NETWORKS ALLOW USERS TO
    • -Simultaneously access the same programs and data.
    • -Transfer data from one computer to another.
    • -Share peripheral devices, such as printers.
    • -Share data storage devices for backup.
    • -Use electronic mail (e-mail) to communicate with each other.
    • -Access the Internet.
  4. Any entity on a network that can be managed, such as a system, repeater,router, gateway,switch or firewall. A computer or other addressable device attached to a network; a host.
    • NODE
  5. CLIENT
    An individual computer connected to a network. Also, a system or application (such asa Web browser or user agent) that requests a service from another computer (the server) and is used to access files or documents.
  6. A computer in a network that manages the network resources and provides, or serves, information to clients.
    • SERVER
  7. the interface that enables users to communicate with and request information from the server
    CLIENT SOFTWARE
  8. Divides computing tasks between the client and the server using a common set of protocols.
    The client/server model:
  9. Why was the Internet created using multiple connections among multiple hosts?
    To avoid a central point of vulnerability, and thus reduce the chance of total network failure
  10. High-speed data lines that handle the bulk of data transmission and form the main network connections of the Internet are known as:
    BACKBONES
  11. The two main types of network structures
    local area networks (LANs) and wide area networks (WANs).
  12. A group of computers connected within a confined geographic area.
    local area network(LAN)
  13. A group of computers connected over an expansive geographic area so their users can share files and services.
    wide area network(WAN)
  14. A world wide network of interconnected networks.
    Internet
  15. A U.S. Departmentof Defense agencythat created the first global computer network.
    Advanced ResearchProjects Agency(ARPA)
  16. A computer network, funded by ARPA, that served as the basis for early networking researchand was the backbone during the development of the Internet.
    Advanced ResearchProjects AgencyNetwork (ARPANET)
  17. An independent agency of the U.S.government that promotes the advancement of science and engineering.
    National ScienceFoundation (NSF)
  18. The highest level inthe computer network hierarchy,to which smaller networks typically connect.
    BACKBONES
  19. A node on a network that serves as a portal to other networks.
    gateway
  20. A set of software programs that enables users to access resources ont he Internet via hypertext documents
    World Wide Web(WWW)
  21. Highlighted or underlined text in aWeb page that,when clicked, links the user to another location or Webpage.
    hypertext link
  22. An HTML document containing one or more elements (text,images, hyperlinks)that can be linked to or from other HTML pages.
    Web page
  23. A World Wide Webserver and its content; includes multiple Webpages.
    WEB SITE
  24. A software application that enables users to access and view Web pages on the Internet.
    Web browser
  25. host computers on the Internet
    WEB SERVERS
  26. A suite of protocols that turns data into blocks of information called packets,which are then sent across the Internet.The standard protocol used by the Internet.
    Transmission ControlProtocol/InternetProtocol (TCP/IP)
  27. Data processed byprotocols so it canbe sent across anetwork.
    PACKETS
  28. A device that routes packets between networks based onnetwork-layer addresses;determines the best path across an etwork. Also used to connects eparate LANs to form a WAN.
    router
  29. protocol software used to communicate with the Internet Client
    TCP/IP
  30. direct connection to an Internet Service Provider (ISP)
    Internet connection
  31. Web browser, e-mail or news client program
    Client software
  32. An organization that maintains a gateway to the Internet and rents access to customers on a per-use or subscription basis.
    Internet Service Provider (ISP)
  33. two principal options for connecting to the Internet offered by ISPs
    Dial-up connection and Direct connection
  34. Abbreviation for modulator/demodulator. An analog device that enables computers to communicate over telephone lines by translating digital data into audio/analog signals (onthe sending computer) and then back into digital form (on the receiving computer).
    modem
  35. A communication standard for sending voice,video or data over digital telephone lines.
    Integrated Service Digital Network(ISDN)
  36. The amount ofinformation,sometimes calledtraffic, that can becarried on anetwork at onetime. The totalcapacity of a line.Also, the rate ofdata transfer over anetworkconnection;measured in bits persecond.
    bandwidth
  37. A circuit board within a computer's central processing unit that serves as the interface enabling the computer to connect to a network.
    network interfacecard (NIC)
  38. A device that enables wireless systems to communicate with each other, provided that they are on the same network.
    wireless accesspoint (AP)
  39. A definition or format that has been approved by a recognized standards organization
    standard
  40. wireless mode in which systems use only their NICs to connect with each other
    Ad-hoc
  41. wireless mode in which systems connect via a centralized access point, called a wireless access point (AP)
    Infrastructure
  42. A standard system that uses a wireless network interface card (NIC)
    end point
  43. Two types of wireless modes
    Ad-hoc and Infrastructure

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