Subject

    Computer Science

    Topic

    Computer Hardware

    What does the 'MAC address' of a Network Interface Card (NIC) represent?

    a)
    A configurable logical address used for routing between networks.
    b)
    A globally unique hardware address burned into the card by the manufacturer.
    c)
    The speed rating of the network card.
    d)
    The memory address of the card's driver.

    Explanation

    The MAC (Media Access Control) address is a unique identifier assigned to a NIC for communications at the data link layer (Layer 2). It is used by switches to forward frames to the correct device within a local network segment. It is distinct from an IP address, which is a logical address used at the network layer (Layer 3).

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