Data Link Layer Quiz
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Questions and Answers

What is the main role of the Data Link layer?

  • It uses sequence numbers to maintain reliability
  • It provides communication between locally networked devices (correct)
  • It uses sockets to identify running applications
  • It deletes entries in the ARP cache

    • Which of the following acronyms represents the Data Link layer?

  • LLC - LOGIC LINK LAYER
  • LLC - LOCAL LINK CONNECTION
  • MAC - MEDIA ACCESS CONTROL (correct)
  • MAC - MULTIPLEXING ACCESS CARD

    • Which of the following best describes the role of Data Link LLC?

  • It deletes entries in the ARP cache
  • It provides communication between different networks
  • It uses sequence numbers to maintain reliability
  • It interfaces with the upper layer for data transmission (correct)

    • Which layer of the TCP/IP model is the Data Link layer?

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

    What does the Data Link layer use to identify running applications?

    <p>MAC address</p> Signup and view all the answers

    What is the main function of the LLC (Logical Link Control) layer?

    <p>Multiplexing service to upper layer protocols</p> Signup and view all the answers

    What is the primary role of the Media Access Control (MAC) component of the Data Link Layer?

    <p>Sending traffic to the network media</p> Signup and view all the answers

    Why do routers require at least 2 network cards?

    <p>To function as devices that connect and route traffic between different networks</p> Signup and view all the answers

    How many bits constitute a MAC address?

    <p>48 bits</p> Signup and view all the answers

    What are the two constituent parts of a MAC address?

    <p>OUI and Unique 24-bit number</p> Signup and view all the answers

    Which Windows command will display the MAC address of your computer's Ethernet network interface card?

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

    Study Notes

    • The main role of the Data Link layer is to provide error-free transfer of data frames between two devices on the same network.
    • The Data Link layer is represented by the acronym OSI 2.
    • The Data Link LLC (Logical Link Control) layer is responsible for identifying and managing network connections, as well as providing flow control and error detection.

    TCP/IP Model

    • The Data Link layer is the second layer of the TCP/IP model.

    Identification of Applications

    • The Data Link layer uses port numbers to identify running applications.

    LLC Function

    • The main function of the LLC (Logical Link Control) layer is to manage network connections, provide flow control, and detect errors.

    MAC Component

    • The primary role of the Media Access Control (MAC) component of the Data Link Layer is to manage access to the network channel, resolving collisions, and providing address recognition.

    Routers and Network Cards

    • Routers require at least 2 network cards to connect multiple networks and forward data between them.

    MAC Address

    • A MAC address consists of 48 bits.
    • A MAC address is composed of two parts: the Organizationally Unique Identifier (OUI) and the Network Interface Controller (NIC) specific value.

    Windows Command

    • The getmac command in Windows displays the MAC address of a computer's Ethernet network interface card.

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    Description

    Test your knowledge of the Data Link layer with this quiz. Identify the correct role and characteristics of the Data Link layer in computer networking.

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