What is the size of MAC address in computer network?

MAC (Media Access Control) address is a unique identifier assigned to network interfaces for communication on a network. It is used at the data link layer of the OSI model. The standard size of a MAC address is 48 bits, which allows for a large number of unique addresses. This is typically represented as 12 hexadecimal digits, grouped in pairs separated by colons or hyphens (e.g., 00:1A:2B:3C:4D:5E). Now, let's evaluate the options: Option A (32 bits): This is incorrect because 32 bits is the size of an IPv4 address, not a MAC address. Option B (16 bits): This is incorrect as 16 bits is too small for a globally unique identifier in networking. Option C (48 bits): This is correct as it matches the standard size of a MAC address. Option D (More than one of the above): This is incorrect because only one option (C) is correct. Option E (None of the above): This is incorrect because Option C is correct. Therefore, the correct answer is Option C.