An Acknowledgement by TCP at sender guarantees?
1.Data has been delivered to the application.
2.Date has been received by TCP module.
3.Data has been received by the Application interface.
4.None?

Question

An Acknowledgement by TCP at sender guarantees?1.Data has been delivered to the application.2.Date has been received by TCP module.3.Data has been received by the Application interface.4.None?

Answer

Acknowledgement by TCP at sender guarantees

Data has been delivered to the application: When TCP receives an acknowledgement from the receiver, it guarantees that the data has been successfully delivered to the application layer of the receiver. This ensures that the data has been received by the receiver and can be used by the application.

Data has been received by TCP module: When TCP receives an acknowledgement from the receiver, it guarantees that the data has been received by the TCP module of the receiver. This ensures that the data has been successfully transmitted over the network and has reached the intended receiver.

Data has been received by the Application interface: When TCP receives an acknowledgement from the receiver, it does not necessarily guarantee that the data has been received by the application interface of the receiver. There may be other factors that prevent the data from being delivered to the application interface, such as network congestion or hardware failure.

None: If TCP does not receive an acknowledgement from the receiver, it does not guarantee any of the above. In this case, the sender may need to retransmit the data to ensure that it is successfully delivered to the receiver.

Explanation

TCP (Transmission Control Protocol) is a reliable transport protocol that provides a reliable connection-oriented service to the application layer. When data is transmitted over the network using TCP, it is divided into smaller segments and sent across the network. The receiver sends an acknowledgement to the sender for each segment it receives, which ensures that the data has been successfully transmitted over the network.

When TCP receives an acknowledgement from the receiver, it guarantees that the data has been successfully delivered to the receiver and can be used by the application. However, it does not necessarily guarantee that the data has been received by the application interface of the receiver. The application interface may be blocked by other factors, such as network congestion or hardware failure.

If TCP does not receive an acknowledgement from the receiver, it does not guarantee any of the above. In this case, the sender may need to retransmit the data to ensure that it is successfully delivered to the receiver. TCP uses a retransmission mechanism to ensure that all data is successfully transmitted over the network.

Answer

C

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