Which process provides a mechanism whereby DNS can attempt to satisfy name resolution requests locally before attempting them remotely, thereby greatly improving the speed of such name resolution?
When a TCP/IP client uses a resolver to send a name query to a DNS server, that client obtains the address for the DNS server it queries from its TCP/IP configuration data.
Data associated with domain names, address records, and other specific data of interest to the Domain Name System is stored on a DNS server in special database records called which of the following?
Twenty-six root name servers (named A.ROOT-SERVERS.NET., B.ROOT-SERVERS.NET., etc.) act as the top of the DNS hierarchy worldwide. They provide the ultimate source for all name lookups that cannot be resolved through other means.
Indicate the answer choice that best completes the statement or answers the question.
DNS servers cache name and address pairs for addresses they resolved, and they keep information about name requests that result in error messages. What is this information called?
What type of servers are used to store recently accessed DNS records from other domains to avoid incurring the performance overhead involved in making a remote query each time a resource outside the local domain is accessed?
When one DNS server receives a recursive request, that DNS server issues which of the following to the name servers in its hierarchy, or to servers provided as pointers in reply to earlier requests, until an answer is received?