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 _answer here_
 
 > Although UDP is unreliable, which does not guarantee packet delivery, order, or integrity, it is still useful for applications where speed and low latency are more important than reliability.
+
 > Since there is no connection setup or retransmission, UDP is much faster than TCP, which lower the latency. 
 > UDP allows sending packets to multiple recipients simultaneously, which is crucial for Streaming video/audio, Online gaming (real-time updates), IoT devices (sensor updates)
+
 > DNS uses UDP because queries are small and fast (retrying is faster than using TCP).
 
 5. What interface/abstraction is provided by the operating system to enable applications to use network communications?