7 Comments on “Which network protocol does DNS use?”

1. atef says:

   December 29, 2012 at 6:51 pm

   Itis UDp So Answer IS “D”

   
   
   
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2. Mohamed.hosseny says:

   January 16, 2013 at 1:30 pm

   It’s UDP

   
   
   
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3. Tarqui Costa says:

   January 19, 2013 at 4:38 am

   Item D

   
   
   
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4. bob says:

   April 3, 2013 at 2:55 am

   This is incorect as DNS uses both udp and tcp

   
   
   
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5. shreyas says:

   August 1, 2013 at 9:46 am

   wrong ques…it uses both…

   
   
   
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6. savaspar says:

   August 31, 2013 at 12:26 am

   DNS uses both UDP and TCP port 53. Please edit the question correctly.

   
   
   
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7. Email Hosting says:

   September 1, 2013 at 2:12 am

   Normally a client sends a DNS Query using UDP Protocol over Port 53. If it does not get response from a DNS Server, it must re-transmit the DNS Query using TCP after 3-5 seconds. So we can say DNS prefers using UDP to TCP -> the answer should be UDP.

   
   
   
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