Examples of Name Resolution
When a network-connected machine begins a conversation with another machine, the first thing it needs to do to contact the target is to map the IP address of the target machine to a Media Access Control (MAC) address. Broadcasting Address Resolution Protocol (ARP) packets so that the two machines can trade MAC addresses and then communicate at the MAC layer of the OSI model accomplishes this. This also enables the two machines to resolve the IP address of their target to a MAC address. Listing 3.1 shows the output of an arp -a command showing the mapping of MAC addresses to IP addresses.
Code Listing 3.1. Listing the ARP Cache
c:\> arp -a Interface: 192.168.0.200 on Interface 0x1000003 Internet Address Physical Address ... |
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