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Which of the following is false with respect to UDP?
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UDP (User Datagram Protocol) offers an unreliable, connectionless service for sending datagrams over an IP network. Here are statements regarding UDP, with the aim to identify the false one:
1. UDP guarantees delivery of packets.
– This statement is false. UDP does not guarantee packet delivery, packet ordering, or provide mechanisms for avoiding duplicate packets, making it an unreliable protocol.
2. UDP supports broadcasting and multicasting.
– This statement is true. UDP supports broadcasting (sending data to all on a network) and multicasting (sending data to a group of destination computers simultaneously).
3. UDP performs error checking.
– This statement is true but requires clarification. While UDP performs basic error checking using a checksum to ensure data integrity, it does not provide any error recovery. If a packet arrives with a mismatched checksum, it is discarded.
4. UDP is connectionless.
– This statement is true. UDP is connectionless, meaning that one program can send a batch of packets to another without first needing to establish a connection, making it suitable for scenarios where low latency is crucial, such as streaming media.
The false statement regarding UDP is the first one, as UDP does not guarantee the delivery of packets.