help me about logical address and physical address

Question

pls tell me about physical address and logical address...

Writhe · Answer

Forget the crap kirtan told you physical address is In computing , a physical address , also real address , or binary address , is the memory address that is electronically (in the form of binary number ) presented on the computer address bus circuitry in order to enable the data bus to access a particular storage cell of main memory . logical address is In computing , a logical address is the address at which an item (memory cell, storage element, network host) appears to reside from the perspective of an executing application program . A logical address may be different from the physical address due to the operation of an address translator or mapping function. Such mapping functions may be, in the case of a computer memory architecture, a memory management unit (MMU) between the CPU and the memory bus, or an address translation layer, e.g., the Data Link Layer , between the hardware and the internetworking protocols ( Internet Protocol ) in a computer networking system.

Kirtan Patel · Answer

. Hi friend, Here is your answer please dont forget to mark " Do you like this answer " if it helps you :) A Physical address is a 48-bit flat address burned into the ROM of the NIC card which is a Layer1 device of the OSI model. This iis divided into 24-bit vendor code and 24-bit serial address. This is unique for each system and cannot be changed. A Logical address is a 32- bit address assigned to each system in a network. This works in Layer-3 of OSI Model. This would be generally the IP address.