200-901: Automating Networks Using Cisco PlatformsDemo

By Cisco · Question Mode

QuestionQ205

Network Fundamentals

What is the function of the first three digit pairs in a MAC address?

  • A defines packet forwarding priority sent or received by the adapter
  • B defines a routing identifier for the client
  • C indicates vendor of the network card or adapter
  • D indicates the IP address of the client in Hex
Explanation

The first three octets of a universally administered MAC address form the 24-bit Organizationally Unique Identifier (OUI), which identifies the vendor, manufacturer, or other organization assigned the address block.

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