Question: What is the main disadvantage of using NAT?

Options:

1. It simplifies network configuration
2. It can complicate certain protocols that require end-to-end connectivity
3. It enhances security
4. It allows for IP address conservation

Correct Answer: It can complicate certain protocols that require end-to-end connectivity

Solution:

The main disadvantage of NAT is that it can complicate protocols that require end-to-end connectivity, such as VoIP and some peer-to-peer applications.