Use dig to query DNS.
DNS is the "phonebook" of the internet: it maps human names
(example.com) to IPs (93.184.216.34). `dig` is the standard tool to
query DNS.
TASK
----
Run:
dig example.com
Pass when "ANSWER SECTION" appears in the output.
TIP: `dig +short example.com` gives you just the IP, ideal in scripts.
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