COMPUTER NETWORKING

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DATA LINK LAYER WIRED NETWORKS

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It is a 12-hexadecimal identifier of every networking interface.
A
MAC address
B
IP address
C
IPv6
D
Serial Number
Explanation: 

Detailed explanation-1: -A MAC address (media access control address) is a 12-digit hexadecimal number assigned to each device connected to the network. Primarily specified as a unique identifier during device manufacturing, the MAC address is often found on a device’s network interface card (NIC).

Detailed explanation-2: -The hexadecimal numbering system uses the numbers 0 to 9 and the letters A to F. An Ethernet MAC address consists of a 48-bit binary value. Hexadecimal is used to identify an Ethernet address because a single hexadecimal digit represents 4 binary bits.

Detailed explanation-3: -The Format of a MAC Address Traditional MAC addresses are 12-digit (6 bytes or 48 bits) hexadecimal numbers. By convention, these addresses are usually written in one of the following three formats, although there are variations: MM:MM:MM:SS:SS:SS.

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