Network Infrastructure Basics
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Network Infrastructure Basics

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@IndebtedOwl

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Questions and Answers

What is the main function of an intermediary device in a network?

  • To store data permanently
  • To manage user accounts
  • To originate messages
  • To interconnect end devices (correct)

    • A Local Area Network (LAN) spans a large geographic area and is typically managed by multiple service providers.

    False

    Name one type of medium used for communication in networks.

    Copper cables, fiber optic cables, or wireless transmission

    An end device is where a message _____ from or is _____ .

    <p>originates; received</p> Signup and view all the answers

    Which of the following is an example of an intermediary device?

    <p>Router</p> Signup and view all the answers

    Fiber optic cables use metallic wires for data transmission.

    <p>False</p> Signup and view all the answers

    What does WAN stand for?

    <p>Wide Area Network</p> Signup and view all the answers

    Match the network types with their characteristics:

    <p>LAN = Spans a small geographic area WAN = Connects multiple LANs over larger areas MAN = Covers a city or large campus WLAN = Wireless Local Area Network</p> Signup and view all the answers

    The Internet is described as a worldwide collection of interconnected _____ and _____.

    <p>LANs; WANs</p> Signup and view all the answers

    Which component is primarily responsible for maintaining information about network pathways?

    <p>Intermediary device</p> Signup and view all the answers

    Which of the following groups helps maintain the structure of the Internet?

    <p>IETF</p> Signup and view all the answers

    An intranet is a public network accessible to anyone.

    <p>False</p> Signup and view all the answers

    What is the primary purpose of an extranet?

    <p>To provide secure access to a network for individuals from different organizations.</p> Signup and view all the answers

    Corporate business connections may require higher bandwidth, dedicated connections, or __________ services.

    <p>managed</p> Signup and view all the answers

    Match the following Internet connection types with their descriptions:

    <p>Cable = High bandwidth, always on connection offered by cable providers DSL = Internet connection running over a telephone line Satellite = Connection useful in rural areas without ISPs Dial-up = Inexpensive, low bandwidth connection using a modem</p> Signup and view all the answers

    What type of Internet connection is typically used for home users and small offices?

    <p>Broadband DSL</p> Signup and view all the answers

    Cellular connections are available wherever a cell phone signal is present.

    <p>True</p> Signup and view all the answers

    What is one major benefit of satellite connections?

    <p>Availability in rural areas without Internet Service Providers.</p> Signup and view all the answers

    Packet Tracer is a software program that helps with __________ studies.

    <p>CCNA</p> Signup and view all the answers

    Match the following types of WAN connections with their characteristics:

    <p>Business DSL = Available in different formats, including SDSL Leased Lines = Reserved circuits for private networking Metro Ethernet = Extends LAN access technology Ethernet WAN = Another name for high-speed broadband</p> Signup and view all the answers

    Which of the following is NOT a method to connect users to the Internet?

    <p>Fax machine</p> Signup and view all the answers

    The Internet is owned by a single organization.

    <p>False</p> Signup and view all the answers

    What is the primary function of an intranet?

    <p>To provide a private network accessible only to an organization's members.</p> Signup and view all the answers

    An organization might use an extranet to provide secure access to their network for __________ who need access to their data.

    <p>external partners</p> Signup and view all the answers

    Match the Internet connection types with their characteristics:

    <p>DSL = Runs over a telephone line Cable = Always on, provided by cable TV service Cellular = Uses a cell phone network for connection Satellite = Useful in rural areas without ISPs</p> Signup and view all the answers

    Which group is NOT involved in maintaining the Internet's structure?

    <p>FCC</p> Signup and view all the answers

    Packet Tracer is a software tool that helps with studying network behaviors.

    <p>True</p> Signup and view all the answers

    Name one advantage of using a leased line for corporate business connections.

    <p>Higher bandwidth or dedicated connections.</p> Signup and view all the answers

    WANs are connected to each other using __________ cables.

    <p>copper or fiber optic</p> Signup and view all the answers

    Match the following WAN connection types with their characteristics:

    <p>Business DSL = High bandwidth for businesses Metro Ethernet = Extends LAN access into the WAN Dedicated Leased Line = Reserved circuits for private networking Satellite = Provides a connection when wired solutions aren't available</p> Signup and view all the answers

    What type of network spans a small geographic area and is usually administered by a single organization?

    <p>Local Area Network (LAN)</p> Signup and view all the answers

    Intermediary devices do not actively manage data as it flows through a network.

    <p>False</p> Signup and view all the answers

    What medium is commonly used for high-speed data transmission in networks?

    <p>Fiber optic cables</p> Signup and view all the answers

    Data flows from an end device, through __________, and arrives at another end device.

    <p>intermediary devices</p> Signup and view all the answers

    Match the types of networks with their descriptions:

    <p>LAN = A network that spans a small geographic area WAN = A network that spans a large geographic area MAN = A network that covers a city WLAN = A wireless version of a LAN</p> Signup and view all the answers

    Which of the following is NOT a characteristic of WANs?

    <p>Provide high-speed connections</p> Signup and view all the answers

    Wireless transmission is one of the media types used in networking.

    <p>True</p> Signup and view all the answers

    Name an example of an intermediary device.

    <p>Router</p> Signup and view all the answers

    A network interface card is primarily used for connecting an end device to a __________.

    <p>network</p> Signup and view all the answers

    Which of the following best describes a Metropolitan Area Network (MAN)?

    <p>Interconnects networks within a city</p> Signup and view all the answers

    Study Notes

    Network Infrastructure

    • Comprises three main categories: devices, media, and services.

    End Devices

    • An end device is the source or destination of a message.
    • Data flows from one end device through the network to another end device.

    Intermediary Devices

    • Interconnect end devices and manage data flow in networks.
    • Examples: switches, routers, wireless access points, firewalls.
    • Functions include regenerating and retransmitting data signals, maintaining pathway information, and notifying devices of errors.

    Communication Media

    • Essential for transferring messages between devices.
    • Types of media used in networks include:
      • Metallic wires (copper cables)
      • Glass (fiber optic cables)
      • Wireless transmission

    Network Diagrams

    • Known as topology diagrams, show device connections and layout.
    • Key terms to understand include:
      • Network Interface Card (NIC)
      • Physical Port
      • Interface
    • Differentiate between physical topology (device locations) and logical topology (addressing schemes).

    Types of Networks

    • Local Area Network (LAN):

      • Covers small geographic areas like homes or offices.
      • Generally managed by a single organization.
      • Offers high-speed bandwidth.

    • Wide Area Network (WAN):

      • Connects LANs over large distances, like cities or countries.
      • Managed by multiple service providers.
      • Generally has slower speed links compared to LANs.

    • Other network types:

      • Metropolitan Area Network (MAN)
      • Wireless LAN (WLAN)
      • Storage Area Network (SAN)

    The Internet

    • An extensive network of interconnected LANs and WANs.
    • Not owned by any individual; governed by organizations like IETF, ICANN, and IAB.
    • Connection methods include copper wires, fiber optic cables, and wireless transmissions.

    Intranet vs. Extranet

    • Intranet: Private networks within organizations, restricted to members or authorized personnel.
    • Extranet: Allows secure access to external users from different organizations.

    Internet Connection Methods

    • For home users: broadband cable, DSL, wireless WANs, and mobile services.
    • Organizations require faster connections for services like IP phones and video conferencing.
    • Business-class options include:
      • Dedicated Leased Lines: Private voice/data networking between offices.
      • Ethernet WAN: Extends LAN technology into WAN.
      • Business DSL: Offers various formats, including SDSL.
      • Satellite: Ideal for rural areas lacking wired solutions.

    Packet Tracer Program

    • A software tool for CCNA studies, facilitating experimentation with network behavior and designs.
    • Assists in understanding network technologies necessary for CCNA certification.

    Network Infrastructure

    • Comprises three main categories: devices, media, and services.

    End Devices

    • An end device is the source or destination of a message.
    • Data flows from one end device through the network to another end device.

    Intermediary Devices

    • Interconnect end devices and manage data flow in networks.
    • Examples: switches, routers, wireless access points, firewalls.
    • Functions include regenerating and retransmitting data signals, maintaining pathway information, and notifying devices of errors.

    Communication Media

    • Essential for transferring messages between devices.
    • Types of media used in networks include:
      • Metallic wires (copper cables)
      • Glass (fiber optic cables)
      • Wireless transmission

    Network Diagrams

    • Known as topology diagrams, show device connections and layout.
    • Key terms to understand include:
      • Network Interface Card (NIC)
      • Physical Port
      • Interface
    • Differentiate between physical topology (device locations) and logical topology (addressing schemes).

    Types of Networks

    • Local Area Network (LAN):

      • Covers small geographic areas like homes or offices.
      • Generally managed by a single organization.
      • Offers high-speed bandwidth.

    • Wide Area Network (WAN):

      • Connects LANs over large distances, like cities or countries.
      • Managed by multiple service providers.
      • Generally has slower speed links compared to LANs.

    • Other network types:

      • Metropolitan Area Network (MAN)
      • Wireless LAN (WLAN)
      • Storage Area Network (SAN)

    The Internet

    • An extensive network of interconnected LANs and WANs.
    • Not owned by any individual; governed by organizations like IETF, ICANN, and IAB.
    • Connection methods include copper wires, fiber optic cables, and wireless transmissions.

    Intranet vs. Extranet

    • Intranet: Private networks within organizations, restricted to members or authorized personnel.
    • Extranet: Allows secure access to external users from different organizations.

    Internet Connection Methods

    • For home users: broadband cable, DSL, wireless WANs, and mobile services.
    • Organizations require faster connections for services like IP phones and video conferencing.
    • Business-class options include:
      • Dedicated Leased Lines: Private voice/data networking between offices.
      • Ethernet WAN: Extends LAN technology into WAN.
      • Business DSL: Offers various formats, including SDSL.
      • Satellite: Ideal for rural areas lacking wired solutions.

    Packet Tracer Program

    • A software tool for CCNA studies, facilitating experimentation with network behavior and designs.
    • Assists in understanding network technologies necessary for CCNA certification.

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    Description

    Explore the fundamental concepts of network infrastructure, including the roles of end devices and intermediary devices. Learn how data flows through a network and the types of components involved in creating effective network systems.

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