SENG2220 Web Development II. Mohammed A. Saleh http://ifm.ac.tz/staff/msaleh/teach/ 29 th October 2009. Domain Name Service (DNS). TCP/IP facility that lets you use names rather than numbers to refer to host computers.
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Mohammed A. Saleh
29th October 2009
The Hosts Files
TIP: A secondary server should be on a different subnet
than the zone’s primary server.
✦Recursive queries: the server must reply with either the IP address of the requested host name or an error message indicating that the host name doesn’t exist.
✦Iterative queries: it returns the IP address of the requested host name if it knows the address. If it doesn’t know the address, it returns a referral; the address of a DNS server that should know