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      Rackspace Technology Linux Systems Administrator II interview

      Rackspace Technology Interview Question

      Linux Systems Administrator II Interview

      When does DNS use TCP instead of UDP

      Interview Answers

      Anonymous

      Dec 11, 2011

      DNS use TCP for zone transfer.

      2

      Anonymous

      Dec 3, 2014

      Maximum UDP packet size is 512 bytes (or 4096, with the extension of DNS protocol). When the request is larger then a max. UDP size, DNS will switch to TCP.

      3

      Anonymous

      Nov 26, 2017

      speed

      Anonymous

      Jul 5, 2012

      Agreed....used for zone transfer....

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