Here, the Internet user raises a request for the webpage or any of the information from the Internet. Let’s see how it works with the help of the below figure: Thus even if the DNS cache is flushed out from the OS, it will not completely get empty as the resolver will have a copy of previously used lookups. Each of the servers and resolvers will gather and save their copy of the information for future use. For resolving the query for the first time, it will pass through the resolver followed by the root server and finally the TLD server. The OS and the web browser always keep a copy of the DNS lookups to quickly resolve the query and get the corresponding IP address of the webpage efficiently when requested.Īlso read => How to fix the DNS Probe Finished NXDomain ErrorĭNS lookup procedure involves various procedures. DNS cache represents the temporary storage of the IP addresses and other relevant information of the previously used lookups used for resolving the website URL’s query on the host machine or computer web browser and the operating system.
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