involves the process of removing the header and tail from a packet to obtain the data payload. A. Decapsulation B. Routing C. Switching D. Encapsulation

Analyzing the Options

1. Decapsulation: This process refers specifically to the removal of headers and trailers (tails) from packets so that the data payload can be accessed. It typically occurs at the receiving end of data transmission when a packet is processed by a network layer.

2. Routing: This is the process of selecting paths in a network along which to send network traffic. It does not involve the manipulation of packet headers or tails.

3. Switching: This process involves forwarding packets through a network switch based on MAC addresses. Like routing, it does not involve stripping away headers or tails.

4. Encapsulation: This is the reverse process of decapsulation. It involves adding headers and trailers to data as it is prepared for transmission over a network.

Conclusion

Based on the definitions and processes outlined, the correct answer to the question is:

Final Answer: A. Decapsulation.