What is the function of TCP in the Transport Layer?

Question

Accepted Answer

Provides reliable, connection-oriented communication - TCP (Transmission Control Protocol) is a key protocol at the Transport Layer of the OSI model. Its main function is to provide reliable and connection-oriented communication between devices over a network.

Before data is transmitted, TCP establishes a connection between the sender and receiver using a process called the three-way handshake. Once the connection is established, it ensures that all data is delivered accurately and in the correct order.

TCP also uses acknowledgments to confirm successful delivery, and if any data is lost or corrupted during transmission, it automatically retransmits that data. This makes it ideal for applications where reliability is very important, such as web browsing, email, and file transfers.

Key features of TCP:

Establishes a connection before data transfer
Ensures reliable delivery with error checking
Maintains correct sequence of data
Retransmits lost data automatically


Conclusion: The correct answer is Provides reliable, connection-oriented communication. TCP plays a crucial role in making sure data is safely delivered from one device to another.

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