Should DNS use TCP or UDP?

DNS uses TCP for Zone transfer and UDP for name, and 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.

How UDP is faster than TCP?

UDP is faster than TCP, and the simple reason is because its non-existent acknowledge packet (ACK) that permits a continuous packet stream, instead of TCP that acknowledges a set of packets, calculated by using the TCP window size and round-trip time (RTT).

Why is TCP less efficient than UDP?

In TCP the data is transmitted in a particular sequence which means that packets arrive in-order at the receiver. On other hand there is no sequencing of data in UDP in order to implement ordering it has to be managed by the application layer. TCP is slower and less efficient in performance as compared to UDP.

What are the benefits of using UDP instead of TCP that lead to its use for this application?

UDP is faster, simpler, and more efficient than TCP. Retransmission of lost packets is possible in TCP, but not in UDP. There is no retransmission of lost packets in the User Datagram Protocol (UDP).

Why does DNS use Follow UDP stream?

Here is why DNS uses UDP. UDP is much faster when compared to TCP. TCP is slow as it uses 3-way handshake. DNS requests are generally very small and they fit well within UDP segments. UDP is not reliable, but reliability can be added to the application layer.

Does DNS only use UDP?

DNS has always been designed to use both UDP and TCP port 53 from the start 1 , with UDP being the default, and fall back to using TCP when it is unable to communicate on UDP, typically when the packet size is too large to push through in a single UDP packet.

What are the primary differences between TCP and UDP would you recommend UDP or TCP for a voice over IP phone call justify your choice?

UDP is the Best choice for voice Grandstream IP Phones can use either TCP or UDP, but by default are set to UDP. UDP is more suited to fast communications such as voice and video streaming. There is no acknowledgement, there is no handshake, and UDP does not deliver the packets in order.

Is UDP good for gaming?

UDP is ideal for sending these game updates at a ridiculously fast speed, but messages are not guaranteed (because the next message is coming so fast behind). TCP guarantees message delivery, which makes it a great option for chat. You’ll see great performance running your game on UDP and your social features on TCP.