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What does the 'dig' tool primarily query and display information from?
Domain Name System (DNS) servers
Network Information Service (NIS) servers
Simple Mail Transfer Protocol (SMTP) servers
Dynamic Host Configuration Protocol (DHCP) servers
The 'dig' command is used to query Domain Name System (DNS) servers. When you run 'dig', followed by a domain name, it sends a DNS lookup request to a DNS server and then shows the response it gets from the server. This is useful for troubleshooting DNS issues and for confirming the correct operation of DNS servers.
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