Question: To use the services of UDP, we need ________ socket addresses.

Answer:

• To use the services of UDP (User Datagram Protocol), we need two socket addresses: a source socket address and a destination socket address. A socket address is a combination of an IP address and a port number, which identifies a unique endpoint of a communication channel. In UDP, the source socket address identifies the sender of the data, while the destination socket address identifies the receiver of the data.
• The source socket address is assigned by the operating system or the application that initiates the communication, and it includes the IP address and port number of the sending process. The destination socket address is specified by the receiving process, and it includes the IP address and port number of the destination process. When the UDP packet is sent, the source and destination socket addresses are included in the UDP header to enable the receiving process to identify the sender and the intended recipient of the data.