Organizational Unique Identifier Home > Tag: Organizational Unique Identifier Showing 1 of 1 Blog Posts Interview Question of CCNA Part4 admin January 30, 2011 31- What is BIA ? Burn in Address other name is MAC address 32- What is Size of IPv4 MAC Address? 48 Bits 33- Why MAC address... Interview Question of CCNA Part4 by admin in Interview Question Our ServicesPremium PDF Choose Plan Discount Codes Blog New Additions Quick LinksBlog List by Group Payment Methods (New)