DATA LINK LAYER WIRED NETWORKS
WIRED LANS ETHERNET PROTOCOL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The last three hexadecimal digits in the MAC address are assigned by ____
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The vendor of the Ethernet device/interface
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The IEEE
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The system administrator
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The user
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Explanation:
Detailed explanation-1: -Particularly, the first 6 digits of the address tell you what the device manufacturer is, while the last 6 are those that the manufacturer assigns to that specific device.
Detailed explanation-2: -When a vendor assigns a MAC address to a device or to an Ethernet interface, the vendor must do as follows: Use its assigned OUI as the first 6 hexadecimal digits.
Detailed explanation-3: -The first 3 Octet of a MAC Address are the Organizationally Unique Identifier or the “Manufacturer of the Product” and the last 3 Octet are the Network Interface Controller or NIC which are specific to the device they are given too. Each OUI has about 16 million devices they can assign NIC specific MAC Addresses to.
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