To see how this works, consider looking up some piece of data attached to a DNS domain name. In our example we will look up the IP address attached to the domain name . We begin with a somewhat simplified de- scription. A client that wishes to look up a name must know the address to the “root” servers. The “root” servers are the servers located at the top of the DNS tree. 2 The client sends a query for to the root server, and usually the root server only knows who is responsible for the next sub-component in the query. In our example, this means the.
