Which of the following are layers in the TCP/IP model?

The correct answer incorporates the layers that align with the structure of the TCP/IP model. The TCP/IP model consists of four main layers which represent how data is transmitted over networks. These layers include:

1. Application Layer - This layer provides network services directly to the end-users. It encompasses various protocols which facilitate operations such as emailing and web browsing.

2. Transport Layer - Responsible for end-to-end communication and data flow control, this layer ensures complete data transfer and manages error correction and retransmission if needed.

3. Internet Layer - This layer is crucial for routing packets across the network by defining IP addresses and handling the actual data packets that travel through intermediary devices.

The three layers mentioned in the correct answer reflect the upper sections of the TCP/IP model, with a focus on how data is effectively prepared for transport and can be utilized by applications.

In contrast, the other choices mention layers that do not align perfectly with the recognized model. For instance, some introduce layers not traditionally included in the TCP/IP framework, such as the Session layer in one choice and Data Link and Physical layers in another. These layers are more relevant to the OSI model rather than the specific TCP/IP structure, which simplifies the conceptual organization to