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Why DNS use both TCP and UDP ports. And for which purpose
it uses TCP and UDP.
- 5 Answers
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Answer / rajeev
DNS uses TCP for Zone Transfer over Port: 53
DNS uses UDP for DNS Queries over Port: 53
A client computer will always send a DNS Query using UDP
Protocol over Port 53. If a client computer does not get
response from a DNS Server, it must re-transmit the DNS
Query using the TCP after 3-5 seconds of interval.
| Is This Answer Correct ? | 21 Yes | 1 No |
Answer / ravi
dns is domain naming services using this dns
it converts the names to ip and ip to name
| Is This Answer Correct ? | 14 Yes | 5 No |
Answer / srinivas podapati
DNS uses TCP for Zone transfer and UDP for name queries
either regular (primary) or reverse. UDP can be used to
exchange small information whereas TCP must be used to
exchange information larger than 512 bytes. If a client
doesn't get response from DNS it must re-transmit the data
using TCP after 3-5 seconds of interval.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / mohankumar
dns is domain naming services using this dns
it converts the names to ip and ip to name
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / moumita kundu
DNS uses TCP for flow control and error control,and when
message size greater than 5612 bytes and uses UDP when we
need to transfer message size less than 512 bytes.
| Is This Answer Correct ? | 0 Yes | 2 No |
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