When DNS uses UDP instead of TCP, when DNS packet is lost, there is no automatic recovery? Does this cause a problem?, and if so, how is it solved?
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<ol><li>When DNS uses UDP instead of TCP, when DNS packet is lost, there is no automatic recovery?

Does this cause a problem?, and if so, how is it solved?</li><li>In vacation reply, if send a message before logging out and the recipient has have a vacation reply message enabled. What will happen in this case? Will the canned replies keep on going back and forth until someone returns?</li><li>When web pages are sent out, they are prefixed with MIME headers. why?</li><li>Does VoIP have same the problems with the firewall that streaming audio has?</li></ol>

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When UDP packets get lost it causes issues especially when it is used to conduct video or audio conferencing. Such issue can... View the full answer

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