Use of Address Resolution Protocol - Networking

What is the use of Address Resolution Protocol?

Address Resolution Protocol is used for networks that support hardware broadcast. An ARP will not work on x.25 network. The ARP’s responsibility is to convert the higher-level protocol addresses to physical network addresses. ARP functionality is broadcasting a packet to the hosts that are attached to an Ethernet. The packet has IP address of the sender. The target machine identifies and recognizes that the IP address in the data packet matches its own, and returns an answer.
What is the Reverse Address Resolution Protocol (RARP)? - Networking
Reverse Address Resolution Protocol (RARP) is a link layer networking protocol that is used by a host computer system which obtain its IP address......
What is the TTL (Time to Live)? Why is it required? - Networking
TTL is a value in data packet of Internet Protocol. It communicates to the network router whether or not the packet should be in the network for too long or discarded.......
Use of Internet Control Message Protocol (ICMP) - Networking
Internet Control Message Protocol is one of the important protocols in the Internet Protocol suite. It is mainly used in operating system of networked computers.......
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