Which statement about data transfer reliability is true?

Which statement about data transfer reliability is true?

• A. UDP requires error checking and packet retransmission
• B. TCP is faster than UDP for all types of data transfer
• C. TCP provides more reliability than UDP
• D. UDP ensures data order during transmission

Answer: (C)

The statement that TCP provides more reliability than UDP is accurate due to the inherent design and functionality of the two protocols. TCP, or Transmission Control Protocol, is a connection-oriented protocol that establishes a connection between the sender and receiver before data transfer begins. It includes features such as error detection, correction, and acknowledgement of received packets. This ensures that all data is transmitted accurately and in the correct order. If any packets are lost during transmission, TCP is capable of retransmitting those packets to ensure complete and reliable data delivery. In contrast, UDP, or User Datagram Protocol, is a connectionless protocol that does not guarantee delivery, order, or error correction. While it is faster than TCP because it has less overhead, it lacks the reliability features that TCP provides. Consequently, UDP may drop packets or deliver them out of order, which is acceptable for certain applications like video streaming or online gaming, where speed is prioritized over perfect accuracy. Understanding these characteristics helps clarify why TCP is recognized for its reliability in data transfer compared to UDP.

The statement that TCP provides more reliability than UDP is accurate due to the inherent design and functionality of the two protocols. TCP, or Transmission Control Protocol, is a connection-oriented protocol that establishes a connection between the sender and receiver before data transfer begins. It includes features such as error detection, correction, and acknowledgement of received packets. This ensures that all data is transmitted accurately and in the correct order. If any packets are lost during transmission, TCP is capable of retransmitting those packets to ensure complete and reliable data delivery.

In contrast, UDP, or User Datagram Protocol, is a connectionless protocol that does not guarantee delivery, order, or error correction. While it is faster than TCP because it has less overhead, it lacks the reliability features that TCP provides. Consequently, UDP may drop packets or deliver them out of order, which is acceptable for certain applications like video streaming or online gaming, where speed is prioritized over perfect accuracy.

Understanding these characteristics helps clarify why TCP is recognized for its reliability in data transfer compared to UDP.