2:46 AM
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Caching server gets its information from another server ( Master DNS server ) in response to a host query and then cache this information locally, it saves cached data until the time period "time-to-live" in named.conf file expire. When a caching only DNS server starts for the first time, it has't cached informaton , the caching only DNS server collects information as it send and recive quires.
Posted in: DNS