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  • INTERVIEW QUESTIONS NETWORKING DETAILS
    Question :
    What is difference between ARP and RARP?
    Category Networking Interview Questions
    Rating (0.4) By 1218 users
    Added on 9/3/2009
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    Answers:

    The address resolution protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a router to find the physical address of another host on its network by sending a ARP query packet that includes the IP address of the receiver.
    The reverse address resolution protocol (RARP) allows a host to discover its Internet address when it knows only its physical address



    ARP protocol is used to IP Adress to MAC adress. MAC is a phyical adress of the of the lan card

    RARP protocols is changed to MAC adress to IP adress



    Posted by: tekchand verma    

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    ARP(address resolution protocol) which is used to map 32 bits i.p address to 48 bits (Ethernet) physical address. The Reverse process is RARP(Reverse address resolution protocol)



    Posted by: vignesh    

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    simply says arp s adress resolution protocol....that s it convert the physical address in to logical address....the reverse process s take on rarp(reverse address resolution protocol)



    Posted by: sheshu    

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    ARP is used to determine the physical address(MAC Address) of the device only when its ip address is known. ARP is also used to translate the IP address to Ethernet MAC address. Each device has a physical address imprinted on the Network Interface Card(NIC).ARP used to associate an IP address with the phycial address.

    RARP is used to determine the IP address of the host only when the physical address (MAC Address) is known. It's useful when the computer is connected to the network for the first time.



    Posted by: Ajay Bisht    

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    The simplest way to understand the ARP and RARP is.

    when PC sends the data to another host, the ARP help it for making Physical address. and RARP is reversed form it.

    Eg. ARP = IP to MAC
    RARP = MAC to IP



    Posted by: Vishvamitra Ambodiya    

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    answer



    Posted by: Md Nesar Akhtar    

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    ARP(ADDRESS RESOLUTION PROTOCOL).
    IT IS USED TO FIND MAC ADDRESS WHEN THE IP ADDRESS OF A SYSTEM IS KNOWN..
    RARP(REVERSE ADDRESS RWSOLUTION PROTOCOL)
    IT IS USED TO FIND IP ADDRESS WHEN MAC (PHYSICAL)ADDRESS OF A SYSTEM IS KNOWN.



    Posted by: atanu    

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    ARP (address resolution protocol)its port number is 56.ARP finds the Hardware address of the Host from a known IP address and convert the IP address to MAC address.RARP (reverse address resolution protocol) port no 42,convert MAC to IP address,from Layer 2 to Layer 3.



    Posted by: md shoeb sayyed    

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    ARP(address resolution protocol) which is used when any host of the network change the our NIC(network interface card).RARP(reverse address resolution protocol) used when the computer is connected to the network in the first time



    Posted by: SANJEEV KUMAR    

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    Address Resolution Protocol (ARP) provides a completely different function to the network than Reverse Address Resolution Protocol (RARP). ARP is used to resolve the Ethernet address of a NIC from an IP address in order to construct an Ethernet packet around an IP data packet. This must happen in order to send any data across the network. Reverse address resolution protocol (RARP) is used for disk less computers to determine their IP address using the network.



    Posted by: UMA ARUNA    

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