Introduction to Networks: Network Components and Transmission Media
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Questions and Answers

What is the function of a router in a computer network?

  • Transfers data packets between different computer networks (correct)
  • Connects two separate Ethernet network segments
  • Connects network devices together to function as a single segment
  • Receives a signal and regenerates it before re-transmitting
  • Which network device uses packet switching to determine the destination device?

  • Repeater
  • Hub
  • Switch (correct)
  • Bridge
  • What is the purpose of a bridge in a computer network?

  • Resolves the destination device using packet switching
  • Transfers data packets between different computer networks
  • Connects two separate Ethernet network segments (correct)
  • Connects network devices together to function as a single segment
  • What is the primary role of repeaters, hubs, and switches in a network?

    <p>Connect network devices together to function as a single segment</p> Signup and view all the answers

    Which type of network cable is commonly used with RJ-45 connectors for data transmission?

    <p>Category 5 cable</p> Signup and view all the answers

    Which component of a computer is used to connect it to a network?

    <p>Network Interface Card (NIC)</p> Signup and view all the answers

    What is the purpose of a gateway in a network?

    <p>Control access to other networks</p> Signup and view all the answers

    In the OSI Model, how many interconnected layers are there?

    <p>7</p> Signup and view all the answers

    What does the TCP/IP Protocol Suite stand for?

    <p>Transmission Control Protocol/Internet Protocol Suite</p> Signup and view all the answers

    What is the primary function of the physical layer in a network?

    <p>Manage the physical relation to communication structure</p> Signup and view all the answers

    Study Notes

    Network Hardware

    • Network cables are transmission media used to transfer data between devices.
    • Category 5 cable with RJ-45 connector is a commonly used network cable.
    • Routers are devices that transfer data packets between different computer networks.
    • Routers are used to connect a PC or LAN to a broadband internet connection and have RJ-45 ports.
    • Repeaters receive a signal, regenerate it, and re-transmit it to extend signal distance.
    • Hubs are multiport repeaters with several input/output ports, allowing input at any port to be available at every other port.
    • Switches receive data, use packet switching to resolve the destination device, and forward data to the particular destination.
    • Bridges connect two separate Ethernet network segments and forward packets from the source network to the destined network.
    • Gateways connect different networks that work on different protocols and control access to other networks.
    • Network Interface Cards (NICs) are components of a computer that connect it to a network.
    • NICs can be internal or external network cards.

    Network Software

    • No specific details mentioned in the text.

    Reference Models

    • OSI Model is a layered networking framework that conceptualizes how communication should be done between heterogeneous systems.
    • OSI Model has seven interconnected layers: physical, data link, network, transport, session, presentation, and application.
    • TCP/IP Protocol Suite is a suite of protocols for communication structured in four layers: application, transport, internet, and network access.
    • TCP/IP Protocol Suite can be used for communication over the internet and private networks.

    Physical Layer

    • Physical layer is vital for transmitting bits from one device to another.
    • Physical layer manages physical and electrical details of communication, including signal acceptance.
    • Functions of the physical layer include:
      • Representing encoding type (how 0's and 1's are transferred to signals).
      • Representing communication (bits transmitted per second).
      • Handling network connection types (multipoint and point to point connections).
      • Dealing with physical topologies (bus, star, ring, or mesh).
      • Dealing with media bandwidth (baseband and broadband transmission).

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    Description

    Learn about the basic concepts, components, and physical layer of computer networks. Explore network hardware, network software, reference models, and different types of transmission media like guided and wireless.

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