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The Address Resolution Protocol (ARP) is used for
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- finding the IP address from the DNS
- finding the IP address of the default gateway
- finding the IP address that corresponds to a MAC address
- finding the IP address that corresponds to a IP address
- finding the IP address from the DNS
Correct Option: D
Address Resolution Protocol (ARP) is a computer networking protocol used by the Internet Protocol (IP) for determining a network host’s link layer or hardware address (MAC Address) when only its Internet Layer (IP) or Network Layer address is known. The protocol operates as a part of the interface between the OSI network and OSI link layer below the network layer. As discussed, the term address resolution refers to the process of finding an address of a computer in a network. In this process, a piece of information is sent by a client process executing on the local computer to a server process executing on a remote computer to resolve the address. The information which is received by the server enables it to uniquely identify the network system for which the address was required and hence, to provide the required address. The address resolution procedure is successfully completed when the client receives the required address as the response from the server.
Reverse of ARP is called Reverse Address Resolution Protocol (RARP). i.e., 255.255.252.0