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What is the difference between physical address and logical address?

Asked by: Interview Candidate | Asked on: Dec 19th, 2005

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Answered by: kalyan raghavan

Answered On : Jan 23rd, 2006

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.

Showing Answers 1 - 13 of 13 Answers

Obtaining a physical address that is ultimately needed to perform an operation. All instructions executing at the machine level require a physical memory, storage or network node address when referencing the actual hardware. Machine addresses are derived using table lookups and/or algorithms.In a network, a "where is?" request is broadcast onto the network, and the logical address (name) is turned into a physical address (machine number), either by the recipient node or by a router that maintains a list of address translations.This is through ARP.

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Sunil

Answered On : Dec 22nd, 2005

Physical Addres: It Is a physical address that we can't change,It is present in NIC Card,Given by INTERNIC Organization.Logical Address: It Can be changed as you like,used for assigning a ip address to clients.

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kalyan raghavan

Answered On : Jan 23rd, 2006

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.

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sanjay

Answered On : Feb 15th, 2006

physical address is MAC address of nic and logical address is ip address.

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vaisnave

Answered On : May 22nd, 2006

pysical address is used in main memory.logical address is used in virtual memory.

  
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ezgiamen kahsu

Answered On : Sep 12th, 2006

the difference between physical and logical address

  
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Physical address also called MAC address.It is present on Network interface cad.It wont change!Logical addressing is used when a packet passes n/w boundary !

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Amol Bawane

Answered On : Nov 6th, 2007

Physical Address is nothing but your actual real address like MAC.for that Storage device should be required.Physical Address can't never change,It is present in NIC Card.Logical Address is noting but ur IP address which is used to create client.It will change whenever change required.ThanksAmol Bawane.

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giri_adepu

Answered On : Jun 2nd, 2008

View all answers by giri_adepu

Logical address of yhe any nic card is ip address of the sysytem.in any copmany lan or wan environment for machine to mechine communication each and every mechine required one nomber.thats why ina peoples desizned and interduces one good technologie is ip addressing system.phisical address of any copmany nic card is also known as a mac address {media accec controler address} mac address mediater bitween cable and mechine. it means mac address main function is transfer the data cable laguage to mechine language anad mechine language to cable language.its a 48 bit address

  
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radhesham

Answered On : Jun 21st, 2011

View all answers by radhesham

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 is 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.


Simply we can say that Physical address is MAC address (Media Access Control) which inbuilt and Logical Address is the IP which is given manually

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Pruthwiraj Jagadale

Answered On : Aug 8th, 2011

Physical address is sometimes a synonym of MAC address. The address is actually used on the network's data link layer

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.

  
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Physical address is a MAC address on a NIC card that can not be changed.. logical address is an address tat we assign for a node on a network.. ex; IP

  
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Thierry

Answered On : Sep 2nd, 2011

The Physical address is the MAC address the logical is the IP address.

  
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