Which connection protocol sends out data packets to the receiving system and does not require a receipt acknowledgement?

• A. Source Port Protocol (SPP)
• B. Connection-oriented communication
• C. Datagram Checksum Protocol (DCP)
• D. Connectionless-oriented communication

Answer: (D)

The answer is appropriate because it correctly identifies a protocol that operates without requiring a receipt acknowledgement. Connectionless-oriented communication is characterized by its ability to send data packets independently, meaning that each packet is treated as a standalone unit. There is no expectation for the receiving system to confirm receipt of those packets, which contrasts with connection-oriented communication where a session is established and acknowledgements are usually exchanged.

In this context, protocols such as User Datagram Protocol (UDP) exemplify connectionless communication, allowing for quick transmission of packets even if they are not guaranteed to arrive or be ordered correctly. This approach is beneficial in scenarios where speed is prioritized over reliability, such as streaming audio or video where occasional packet loss is acceptable.

The other options do not fit the definition as precisely. Options such as Connection-oriented communication are designed specifically to establish a connection and ensure that data is sent reliably with acknowledgments. The Source Port Protocol and Datagram Checksum Protocol do not correctly describe protocols with the characteristics defined in the question. Thus, connectionless-oriented communication is the most accurate choice as it encapsulates the essence of sending packets without the need for receipt acknowledgements.