Which of the following is a feature of TCP?

Which of the following is a feature of TCP?

• A. Connectionless communication
• B. Reliable data transfer
• C. No error detection
• D. Supports multicast transmissions

Answer: (B)

The correct answer is that TCP provides reliable data transfer. This feature is fundamental to the Transmission Control Protocol. TCP ensures that data sent from one machine reaches another without errors, in the correct order, and without duplication. It achieves this reliability through several mechanisms, such as error detection using checksums, the use of acknowledgments (ACKs) to confirm received packets, and retransmission of lost packets. These elements work together to create a robust communication channel, distinguishing TCP from connectionless protocols like UDP (User Datagram Protocol), which do not guarantee delivery or order. Additionally, TCP establishes a connection between the sender and receiver before data transmission begins, further reinforcing its reliability. This is in contrast to connectionless protocols, which do not establish such a connection and typically don't provide the same level of assurance regarding data integrity and order.

The correct answer is that TCP provides reliable data transfer. This feature is fundamental to the Transmission Control Protocol. TCP ensures that data sent from one machine reaches another without errors, in the correct order, and without duplication. It achieves this reliability through several mechanisms, such as error detection using checksums, the use of acknowledgments (ACKs) to confirm received packets, and retransmission of lost packets. These elements work together to create a robust communication channel, distinguishing TCP from connectionless protocols like UDP (User Datagram Protocol), which do not guarantee delivery or order.

Additionally, TCP establishes a connection between the sender and receiver before data transmission begins, further reinforcing its reliability. This is in contrast to connectionless protocols, which do not establish such a connection and typically don't provide the same level of assurance regarding data integrity and order.