Address resolution(地址解析)

Address resolution refers to the process of converting a domain name or a symbolic name into a corresponding IP address or another type of numerical identifier. This is essential for network communication, as devices on a network use numerical addresses to send and receive data.
Key Components of Address Resolution:
1. Domain Name System (DNS): DNS is the most common method of address resolution on the internet. It translates human-readable domain names (e.g., www.example.com) into IP addresses (e.g., 192.0.2.1) that network devices use to communicate with each other.
2. Address Resolution Protocol (ARP): ARP is used in local area networks (LANs) to map IP addresses to Media Access Control (MAC) addresses. When a device wants to communicate with another device on the same network, it uses ARP to find the MAC address associated with the IP address.
3. Reverse Address Resolution Protocol (RARP): RARP is used to convert a MAC address into an IP address. This is less common but can be useful in certain network configurations where devices need to determine their IP address based on their MAC address.
Address resolution is a fundamental process in network computing, ensuring that data packets are correctly routed to their intended destinations.