Data Communications and Networking: Ethernet and CSMA/CD
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Questions and Answers

What is the primary function of the data link layer in the OSI model?

  • To route packets between networks
  • To convert data into a format suitable for transmission
  • To manage communication sessions between applications
  • To provide media access control and error detection (correct)
  • What is the purpose of fragmentation in the data link layer?

  • To route packets between networks
  • To convert data into a format suitable for transmission
  • To reassemble packets at the receiving end
  • To divide data packets into smaller frames for transmission (correct)
  • What is the function of a MAC address table in the data link layer?

  • To provide error detection and correction
  • To route packets between networks
  • To manage communication sessions between applications
  • To monitor Layer 2 communication (correct)
  • What is the purpose of encapsulating Layer 3 packets into frames?

    <p>To prepare packets for transmission over a network</p> Signup and view all the answers

    Why is CSMA/CD no longer necessary?

    <p>Due to the use of full-duplex capable Layer 2 switches</p> Signup and view all the answers

    What is the primary advantage of using full-duplex capable Layer 2 switches?

    <p>Elimination of collisions</p> Signup and view all the answers

    Which fiber-optic cable type can transmit data up to approximately 500 meters?

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

    What type of light source transmitter is used in Multimode fiber-optic cables?

    <p>Light Emitting Diodes (LEDs)</p> Signup and view all the answers

    What is a characteristic of data transmission over a network?

    <p>Data flows in one direction at a time</p> Signup and view all the answers

    What is the typical application of Single-mode fiber-optic cables?

    <p>Long-distance telephony and cable TV</p> Signup and view all the answers

    What is a function of the Logical Link Control (LLC) sublayer?

    <p>Providing data link layer addressing</p> Signup and view all the answers

    What is the maximum distance that Single-mode fiber-optic cables can cover?

    <p>100 km</p> Signup and view all the answers

    Is Wireless LAN suitable for enterprise networks?

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

    Which data link layer media access control method does Ethernet use with legacy Ethernet hubs?

    <p>CSMA/CD</p> Signup and view all the answers

    Which wireless standard is best suited for industrial and IoT environments?

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

    What type of physical topology can be created by connecting all Ethernet cables to a central device?

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

    Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

    <p>Physical layer</p> Signup and view all the answers

    What are two services performed by the data link layer of the OSI model?

    <p>It accepts segments and packages them into data units and provides data link layer addressing</p> Signup and view all the answers

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