What does TCP send for each packet received to confirm receipt?

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Prepare for the UCF CIS3360 Security in Computing Exam. Utilize flashcards and multiple choice questions with detailed hints and explanations to boost your understanding and readiness. Start today and succeed!

TCP (Transmission Control Protocol) is a reliable, connection-oriented protocol used for transmitting data over a network. One of its core mechanisms for ensuring reliable communication is the use of acknowledgments. When a sender transmits a packet of data, the receiver sends back an acknowledgment packet to confirm that it has received the data successfully. This mechanism helps in detecting lost packets and allows the sender to retransmit any lost data.

In TCP, this acknowledgment packet is known as an ACK (acknowledgement). The ACK serves as a signal to the sender that the data has been received and is intact. This process plays a crucial role in maintaining reliable communication, as it allows TCP to ensure that data is delivered correctly and in the required order.

The other options do not pertain to TCP's acknowledgment process and do not represent standard terminology used in TCP communications. Therefore, the correct identification of ACK as the acknowledgment packet is fundamental to understanding how TCP operates in providing reliability and ensuring data integrity during transmission.