Networking Concepts: Hubs, Switches, and Extranets
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Questions and Answers

What is the primary function of a network hub?

  • To route data selectively to specific devices
  • To encrypt data frames for secure transmission
  • To amplify the signal for long-distance transmission
  • To broadcast data to every device connected to it (correct)
  • What occurs when a data frame is transmitted to a hub?

  • The hub resends the data only to the intended recipient
  • The hub stores the data and sends it later
  • The hub immediately resends it to all connecting links (correct)
  • The hub modifies the data frame before resending
  • How does a hub differ from a switch in network functionality?

  • A hub can handle more data traffic than a switch
  • A hub establishes direct connections between devices
  • A hub broadcasts data to all devices, while a switch routes data intelligently (correct)
  • A hub requires more configuration than a switch
  • Which of the following statements about hubs is incorrect?

    <p>Hubs only send data to devices that need it</p> Signup and view all the answers

    In a network utilizing a hub, what happens to network security?

    <p>Security decreases because all devices receive all data</p> Signup and view all the answers

    What is one key function of a switch in a network?

    <p>Determines if data should remain on a LAN or be transferred elsewhere.</p> Signup and view all the answers

    Which layer of the OSI model does a switch operate on?

    <p>Layer 2: Data Link</p> Signup and view all the answers

    How does a switch manage data transfer within a LAN?

    <p>By sending data only to the devices that need it.</p> Signup and view all the answers

    Which of the following statements about switches is incorrect?

    <p>Switches encrypt data for transmission security.</p> Signup and view all the answers

    What advantage does a switch have over a hub in a network?

    <p>Switches improve network security by isolating data traffic.</p> Signup and view all the answers

    What is a primary function of a voice/data/fax modem?

    <p>File transfer and sending faxes</p> Signup and view all the answers

    Which associated task is NOT typically performed by a voice/data/fax modem?

    <p>Receiving email attachments</p> Signup and view all the answers

    How does a voice/data/fax modem primarily handle voice communication?

    <p>Using computer software</p> Signup and view all the answers

    In addition to file transfer, what else can a voice/data/fax modem be used for?

    <p>Sending and receiving faxes</p> Signup and view all the answers

    When utilizing a voice/data/fax modem, which of the following is essential for operation?

    <p>Specific software applications</p> Signup and view all the answers

    What is the primary purpose of an extranet?

    <p>To allow secure access to company data for individuals from other organizations.</p> Signup and view all the answers

    Which of the following is a correct example of an extranet usage?

    <p>A business providing access to outside suppliers and contractors.</p> Signup and view all the answers

    Which of the following statements is true regarding extranets?

    <p>Extranets require strict security measures to protect shared data.</p> Signup and view all the answers

    What differentiates an extranet from an intranet?

    <p>An extranet allows access to users from outside the organization.</p> Signup and view all the answers

    Who would be the typical users of an extranet?

    <p>Employees and stakeholders from partner organizations.</p> Signup and view all the answers

    What is a key feature that distinguishes routers from bridges?

    <p>They manage traffic by using a routing table.</p> Signup and view all the answers

    Which of the following describes how routers determine where to send data packets?

    <p>By referencing a routing table based on the IP address.</p> Signup and view all the answers

    What types of networks can routers connect?

    <p>Any type of network including star and token ring.</p> Signup and view all the answers

    What does a routing table store in relation to network data forwarding?

    <p>The relationship between IP addresses and next hop destinations.</p> Signup and view all the answers

    Why are routers considered more sophisticated than bridges?

    <p>They can connect disparate network types.</p> Signup and view all the answers

    Study Notes

    Hubs

    • Hubs are multi-port repeaters that broadcast data to all connected devices.
    • When a data frame is transmitted to a hub, it is immediately re-sent to all connected links.
    • Hubs operate on Layer 2 of the OSI model.

    Switches

    • Switches are more sophisticated than hubs, determining whether data remains on a LAN or is transferred to a specific device.
    • Switches forward data based on the destination hardware (MAC) address.

    Extranets

    • Extranets provide secure access to company data for individuals outside the organization.
    • Examples include providing access to external suppliers or contractors.

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    Description

    Test your understanding of essential networking components like hubs, switches, and extranets. This quiz covers how these elements function within a network and their roles in data transmission and security. Perfect for students in networking courses or professionals looking to refresh their knowledge.

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