Merge branch 'master' of https://github.com/bregman-arie/devops-exercises
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@ -7417,6 +7417,7 @@ MX (Mail Exchange) Specifies a mail exchange server for the domain, which allows
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<details>
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<summary>Is DNS using TCP or UDP?</summary><br><b>
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DNS uses UDP port 53 for resolving queries either regular or reverse. DNS uses TCP for zone transfer.
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</b></details>
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<details>
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