INTERVIEW QUESTIONS NETWORKING DETAILS

Question: What is difference between ARP and RARP?

Answer: 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

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
Source: CoolInterview.com

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 Source: CoolInterview.com

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) Source: CoolInterview.com

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) Source: CoolInterview.com

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. Source: CoolInterview.com

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
Source: CoolInterview.com

answer Source: CoolInterview.com

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. Source: CoolInterview.com

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