11. The User Datagram Protocol is a connectionless datagram protocol. 12. To get around this issue, IPv4 allows packets into the original datagram . 13. Datagram packet switching is also called connectionless networking because no connections are established.14. The " Identification field " uniquely identifies the fragments of a particular datagram . 15. When bound to UDP the entire message MUST fit within a single datagram . 16. It can be used both in datagram and in connection-oriented network services. 17. They are obtained from File streams and java . net sockets and datagram sockets. 18. Each packet sent or received on a datagram socket is individually addressed and routed. 19. The error will not be generated if the original datagram has a multicast destination address. 20. Internet Protocol ( IP ) and User Datagram Protocol ( UDP ) are connectionless protocols.