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  • INTERVIEW QUESTIONS NETWORKING COMPUTER NETWORKS DETAILS
    Question :
    What is the difference between physical address and logical address?


    Category Computer Networks Interview Questions
    Rating (0.4) By 1453 users
    Added on 7/29/2006
    Views 4859
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    Answers:

    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.



    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.



    Posted by: Delta    

    Contact Delta Contact Delta

    Simply physical address known as hardware address.IP address is known as logical address.Physical address is used for identify the PC on network and IP is used for identify the network on the PC mac address 48 bit address IP address 32 bit address.



    Posted by: salim ep    

    Contact salim ep Contact salim ep

    Physical address is a address that is hard-coded into a h/w(say Network Adapter).
    Whee as Logical address is a address that is logically written (say IP-Internet protocols )



    Posted by: Sanjay    

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    Physical Address : Its called as MAC Address

    Logical Address: Its Called as Ip Address



    Posted by: jeeva    

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    Physical address is also called MAC address is assign by the manufacturer of the NIC Card.

    Logical address is also called IP address which is used by the device of the network and internet layer.



    Posted by: Mateen Khan    

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    physical address is also called Media Access Control.
    Logical address is also called internet protocol.



    Posted by: kanhaiya    

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    Physical address is a address which helps to locate devices in LAN..and it normally work with switch.
    formation:-its 48 bit adress also called "BURNT In ADDRESS".when devices are made vendor define this 24 bit is for vendor code identification..

    Logical adress: is a unique address to locate device in network..Mainly in WAN..where routers r used..
    formation: its a 32 bit adress divided into 4 octet each octet contains 8 bits..and written in dotted decimal format like 192.168.2.1. ....
    Bye Sajid



    Posted by: Sajid Abbas    

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    Physical Address is Hardcore(Company assigned) & cannot be changed easily.Logical address is assigned by system or network Admin and can be changed easily.



    Posted by: Rocky    

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    Physical Addres:
    1. It Is a physical address that we can't change It is present in NIC Card Given by INTERNIC Organization.
    2. A Physical address is a 48-bit flat address
    3. physical address is MAC address of nic .
    4. physical address is used in main memory.


    Logical Address:
    1. It Can be changed as you like used for assigning a ip address to clients.
    2. A Physical address is a 32-bit flat address
    3. logical address is ip address
    4. logical address is used in virtual memory.



    Posted by: chandramauli tripathi    

    Contact chandramauli tripathi Contact chandramauli tripathi

    Physical Addres:
    1. It Is a physical address that we can't change It is present in NIC Card Given by INTERNIC Organization.
    2. A Physical address is a 48-bit flat address
    3. physical address is MAC address of nic .
    4. physical address is used in main memory.


    Logical Address:
    1. It Can be changed as you like used for assigning a ip address to clients.
    2. A Physical address is a 32-bit flat address
    3. logical address is ip address
    4. logical address is used in virtual memory.






    Posted by: pupu    

    Contact pupu Contact pupu

    Physical Address

    Physical address is a address which helps to locate devices in LAN. .And it normally works with switch.
    This is unique for each system and cannot be changed. It?s called as MAC Address
    Formation: - Its 48 bit address also called "BURNT In ADDRESS?. When devices are made vendor define this 24 bit is for vendor code identification...

    Logical Address

    Logical address: is a unique address to locate device in network. Mainly in WAN. Where routers r used...
    It?s called as IP (Internet .Protocol)
    Formation: it?s a 32 bit address divided into 4 octets each octet contains 8 bits.
    And written in dotted decimal format like 192.168.2.1....



    Posted by: RANA USMAN ALI    

    Contact RANA USMAN ALI Contact RANA USMAN ALI

    An address generated by CPU is commonly referred to as a Logical Address.
    An address seen by the memory unit(that is, the one loaded into the memory address register of the memory) is commonly referred to as a Physical Address.



    Posted by: krutika parekh    

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    logical address is implemented in Network layer.
    it is 32 bit.

    Physical address is implemented in data link layer
    it is 48 bit.



    Posted by: himani joshi    

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