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CERTIFIED-IN-CYBERSECURITY · Question #331

To which OSI layer does a MAC address belong to?

The correct answer is C. The Data Link layer. A MAC (Media Access Control) address is a hardware identifier burned into a network interface card (NIC) and operates at Layer 2 - the Data Link layer - of the OSI model. Layer 2 is responsible for node-to-node data transfer and framing within the same local network segment…

Network Security Concepts

Question

To which OSI layer does a MAC address belong to?

Options

  • AThe Physical layer
  • BThe Session layer
  • CThe Data Link layer
  • DThe Application layer

How the community answered

(46 responses)
  • A
    7% (3)
  • B
    2% (1)
  • C
    89% (41)
  • D
    2% (1)

Explanation

A MAC (Media Access Control) address is a hardware identifier burned into a network interface card (NIC) and operates at Layer 2 - the Data Link layer - of the OSI model. Layer 2 is responsible for node-to-node data transfer and framing within the same local network segment. Layer 1 (Physical) deals with raw bit transmission over physical media. Layer 5 (Session) manages communication sessions. Layer 7 (Application) handles end-user protocols like HTTP and SMTP. IP addresses, by contrast, belong to Layer 3 (Network).

Topics

#OSI Model#MAC Address#Networking Fundamentals#Data Link Layer

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