Which of the following are true about the format of Ethernet addresses? (Choose three answers.)
- a. Each manufacturer puts a unique OUI code into the first 2 bytes of the address.
- b. Each manufacturer puts a unique OUI code into the first 3 bytes of the address.
- c. Each manufacturer puts a unique OUI code into the first half of the address.
- d. The part of the address that holds this manufacturer’s code is called the MAC.
- e. The part of the address that holds this manufacturer’s code is called the OUI.
- f. The part of the address that holds this manufacturer’s code has no specific name.
Explanation: The pre-assigned universal MAC address, given to each Ethernet port when manufactured, breaks the address into two 3-byte halves. The first half is called the organizationally unique identifier (OUI), which the IEEE assigns to the company that builds the product as a unique hex number to be used only by that company.
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